diff options
Diffstat (limited to 'arch/arm/mach-tegra/tegra124')
| -rw-r--r-- | arch/arm/mach-tegra/tegra124/Kconfig | 30 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/tegra124/Makefile | 13 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/tegra124/clock.c | 935 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/tegra124/cpu.c | 265 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/tegra124/funcmux.c | 71 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/tegra124/pinmux.c | 306 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/tegra124/xusb-padctl.c | 716 |
7 files changed, 2336 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra124/Kconfig b/arch/arm/mach-tegra/tegra124/Kconfig new file mode 100644 index 0000000..88f627c --- /dev/null +++ b/arch/arm/mach-tegra/tegra124/Kconfig @@ -0,0 +1,30 @@ +if TEGRA124 + +choice + prompt "Tegra124 board select" + +config TARGET_JETSON_TK1 + bool "NVIDIA Tegra124 Jetson TK1 board" + +config TARGET_NYAN_BIG + bool "Google/NVIDIA Nyan-big Chrombook" + help + Nyan Big is a Tegra124 clamshell board that is very similar + to venice2, but it has a different panel, the sdcard CD and WP + sense are flipped, and it has a different revision of the AS3722 + PMIC. The retail name is the Acer Chromebook 13 CB5-311-T7NN + (13.3-inch HD, NVIDIA Tegra K1, 2GB). + +config TARGET_VENICE2 + bool "NVIDIA Tegra124 Venice2" + +endchoice + +config SYS_SOC + default "tegra124" + +source "board/nvidia/jetson-tk1/Kconfig" +source "board/nvidia/nyan-big/Kconfig" +source "board/nvidia/venice2/Kconfig" + +endif diff --git a/arch/arm/mach-tegra/tegra124/Makefile b/arch/arm/mach-tegra/tegra124/Makefile new file mode 100644 index 0000000..ef2da29 --- /dev/null +++ b/arch/arm/mach-tegra/tegra124/Makefile @@ -0,0 +1,13 @@ +# +# (C) Copyright 2013-2014 +# NVIDIA Corporation <www.nvidia.com> +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-$(CONFIG_SPL_BUILD) += cpu.o + +obj-y += clock.o +obj-y += funcmux.o +obj-y += pinmux.o +obj-y += xusb-padctl.o diff --git a/arch/arm/mach-tegra/tegra124/clock.c b/arch/arm/mach-tegra/tegra124/clock.c new file mode 100644 index 0000000..fc8bd19 --- /dev/null +++ b/arch/arm/mach-tegra/tegra124/clock.c @@ -0,0 +1,935 @@ +/* + * (C) Copyright 2013 + * NVIDIA Corporation <www.nvidia.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* Tegra124 Clock control functions */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/sysctr.h> +#include <asm/arch/tegra.h> +#include <asm/arch-tegra/clk_rst.h> +#include <asm/arch-tegra/timer.h> +#include <div64.h> +#include <fdtdec.h> + +/* + * Clock types that we can use as a source. The Tegra124 has muxes for the + * peripheral clocks, and in most cases there are four options for the clock + * source. This gives us a clock 'type' and exploits what commonality exists + * in the device. + * + * Letters are obvious, except for T which means CLK_M, and S which means the + * clock derived from 32KHz. Beware that CLK_M (also called OSC in the + * datasheet) and PLL_M are different things. The former is the basic + * clock supplied to the SOC from an external oscillator. The latter is the + * memory clock PLL. + * + * See definitions in clock_id in the header file. + */ +enum clock_type_id { + CLOCK_TYPE_AXPT, /* PLL_A, PLL_X, PLL_P, CLK_M */ + CLOCK_TYPE_MCPA, /* and so on */ + CLOCK_TYPE_MCPT, + CLOCK_TYPE_PCM, + CLOCK_TYPE_PCMT, + CLOCK_TYPE_PDCT, + CLOCK_TYPE_ACPT, + CLOCK_TYPE_ASPTE, + CLOCK_TYPE_PMDACD2T, + CLOCK_TYPE_PCST, + + CLOCK_TYPE_PC2CC3M, + CLOCK_TYPE_PC2CC3S_T, + CLOCK_TYPE_PC2CC3M_T, + CLOCK_TYPE_PC2CC3M_T16, /* PC2CC3M_T, but w/16-bit divisor (I2C) */ + CLOCK_TYPE_MC2CC3P_A, + CLOCK_TYPE_M, + CLOCK_TYPE_MCPTM2C2C3, + CLOCK_TYPE_PC2CC3T_S, + CLOCK_TYPE_AC2CC3P_TS2, + + CLOCK_TYPE_COUNT, + CLOCK_TYPE_NONE = -1, /* invalid clock type */ +}; + +enum { + CLOCK_MAX_MUX = 8 /* number of source options for each clock */ +}; + +/* + * Clock source mux for each clock type. This just converts our enum into + * a list of mux sources for use by the code. + * + * Note: + * The extra column in each clock source array is used to store the mask + * bits in its register for the source. + */ +#define CLK(x) CLOCK_ID_ ## x +static enum clock_id clock_source[CLOCK_TYPE_COUNT][CLOCK_MAX_MUX+1] = { + { CLK(AUDIO), CLK(XCPU), CLK(PERIPH), CLK(OSC), + CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), + MASK_BITS_31_30}, + { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(AUDIO), + CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), + MASK_BITS_31_30}, + { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(OSC), + CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), + MASK_BITS_31_30}, + { CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(NONE), + CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), + MASK_BITS_31_30}, + { CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(OSC), + CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), + MASK_BITS_31_30}, + { CLK(PERIPH), CLK(DISPLAY), CLK(CGENERAL), CLK(OSC), + CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), + MASK_BITS_31_30}, + { CLK(AUDIO), CLK(CGENERAL), CLK(PERIPH), CLK(OSC), + CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), + MASK_BITS_31_30}, + { CLK(AUDIO), CLK(SFROM32KHZ), CLK(PERIPH), CLK(OSC), + CLK(EPCI), CLK(NONE), CLK(NONE), CLK(NONE), + MASK_BITS_31_29}, + { CLK(PERIPH), CLK(MEMORY), CLK(DISPLAY), CLK(AUDIO), + CLK(CGENERAL), CLK(DISPLAY2), CLK(OSC), CLK(NONE), + MASK_BITS_31_29}, + { CLK(PERIPH), CLK(CGENERAL), CLK(SFROM32KHZ), CLK(OSC), + CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), + MASK_BITS_31_28}, + + /* Additional clock types on Tegra114+ */ + /* CLOCK_TYPE_PC2CC3M */ + { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3), + CLK(MEMORY), CLK(NONE), CLK(NONE), CLK(NONE), + MASK_BITS_31_29}, + /* CLOCK_TYPE_PC2CC3S_T */ + { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3), + CLK(SFROM32KHZ), CLK(NONE), CLK(OSC), CLK(NONE), + MASK_BITS_31_29}, + /* CLOCK_TYPE_PC2CC3M_T */ + { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3), + CLK(MEMORY), CLK(NONE), CLK(OSC), CLK(NONE), + MASK_BITS_31_29}, + /* CLOCK_TYPE_PC2CC3M_T, w/16-bit divisor (I2C) */ + { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3), + CLK(MEMORY), CLK(NONE), CLK(OSC), CLK(NONE), + MASK_BITS_31_29}, + /* CLOCK_TYPE_MC2CC3P_A */ + { CLK(MEMORY), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3), + CLK(PERIPH), CLK(NONE), CLK(AUDIO), CLK(NONE), + MASK_BITS_31_29}, + /* CLOCK_TYPE_M */ + { CLK(MEMORY), CLK(NONE), CLK(NONE), CLK(NONE), + CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), + MASK_BITS_31_30}, + /* CLOCK_TYPE_MCPTM2C2C3 */ + { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(OSC), + CLK(MEMORY2), CLK(CGENERAL2), CLK(CGENERAL3), CLK(NONE), + MASK_BITS_31_29}, + /* CLOCK_TYPE_PC2CC3T_S */ + { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3), + CLK(OSC), CLK(NONE), CLK(SFROM32KHZ), CLK(NONE), + MASK_BITS_31_29}, + /* CLOCK_TYPE_AC2CC3P_TS2 */ + { CLK(AUDIO), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3), + CLK(PERIPH), CLK(NONE), CLK(OSC), CLK(SRC2), + MASK_BITS_31_29}, +}; + +/* + * Clock type for each peripheral clock source. We put the name in each + * record just so it is easy to match things up + */ +#define TYPE(name, type) type +static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = { + /* 0x00 */ + TYPE(PERIPHC_I2S1, CLOCK_TYPE_AXPT), + TYPE(PERIPHC_I2S2, CLOCK_TYPE_AXPT), + TYPE(PERIPHC_SPDIF_OUT, CLOCK_TYPE_AXPT), + TYPE(PERIPHC_SPDIF_IN, CLOCK_TYPE_PC2CC3M), + TYPE(PERIPHC_PWM, CLOCK_TYPE_PC2CC3S_T), + TYPE(PERIPHC_05h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_SBC2, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_SBC3, CLOCK_TYPE_PC2CC3M_T), + + /* 0x08 */ + TYPE(PERIPHC_08h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_I2C1, CLOCK_TYPE_PC2CC3M_T16), + TYPE(PERIPHC_I2C5, CLOCK_TYPE_PC2CC3M_T16), + TYPE(PERIPHC_0bh, CLOCK_TYPE_NONE), + TYPE(PERIPHC_0ch, CLOCK_TYPE_NONE), + TYPE(PERIPHC_SBC1, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_DISP1, CLOCK_TYPE_PMDACD2T), + TYPE(PERIPHC_DISP2, CLOCK_TYPE_PMDACD2T), + + /* 0x10 */ + TYPE(PERIPHC_10h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_11h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_VI, CLOCK_TYPE_MC2CC3P_A), + TYPE(PERIPHC_13h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_SDMMC1, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_SDMMC2, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_16h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_17h, CLOCK_TYPE_NONE), + + /* 0x18 */ + TYPE(PERIPHC_18h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_SDMMC4, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_VFIR, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_1Bh, CLOCK_TYPE_NONE), + TYPE(PERIPHC_1Ch, CLOCK_TYPE_NONE), + TYPE(PERIPHC_HSI, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_UART1, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_UART2, CLOCK_TYPE_PC2CC3M_T), + + /* 0x20 */ + TYPE(PERIPHC_HOST1X, CLOCK_TYPE_MC2CC3P_A), + TYPE(PERIPHC_21h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_22h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_HDMI, CLOCK_TYPE_PMDACD2T), + TYPE(PERIPHC_24h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_25h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_I2C2, CLOCK_TYPE_PC2CC3M_T16), + TYPE(PERIPHC_EMC, CLOCK_TYPE_MCPTM2C2C3), + + /* 0x28 */ + TYPE(PERIPHC_UART3, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_29h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_VI_SENSOR, CLOCK_TYPE_MC2CC3P_A), + TYPE(PERIPHC_2bh, CLOCK_TYPE_NONE), + TYPE(PERIPHC_2ch, CLOCK_TYPE_NONE), + TYPE(PERIPHC_SBC4, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_I2C3, CLOCK_TYPE_PC2CC3M_T16), + TYPE(PERIPHC_SDMMC3, CLOCK_TYPE_PC2CC3M_T), + + /* 0x30 */ + TYPE(PERIPHC_UART4, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_UART5, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_VDE, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_OWR, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_NOR, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_CSITE, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_I2S0, CLOCK_TYPE_AXPT), + TYPE(PERIPHC_DTV, CLOCK_TYPE_NONE), + + /* 0x38 */ + TYPE(PERIPHC_38h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_39h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_3ah, CLOCK_TYPE_NONE), + TYPE(PERIPHC_3bh, CLOCK_TYPE_NONE), + TYPE(PERIPHC_MSENC, CLOCK_TYPE_MC2CC3P_A), + TYPE(PERIPHC_TSEC, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_3eh, CLOCK_TYPE_NONE), + TYPE(PERIPHC_OSC, CLOCK_TYPE_NONE), + + /* 0x40 */ + TYPE(PERIPHC_40h, CLOCK_TYPE_NONE), /* start with 0x3b0 */ + TYPE(PERIPHC_MSELECT, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_TSENSOR, CLOCK_TYPE_PC2CC3T_S), + TYPE(PERIPHC_I2S3, CLOCK_TYPE_AXPT), + TYPE(PERIPHC_I2S4, CLOCK_TYPE_AXPT), + TYPE(PERIPHC_I2C4, CLOCK_TYPE_PC2CC3M_T16), + TYPE(PERIPHC_SBC5, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_SBC6, CLOCK_TYPE_PC2CC3M_T), + + /* 0x48 */ + TYPE(PERIPHC_AUDIO, CLOCK_TYPE_AC2CC3P_TS2), + TYPE(PERIPHC_49h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_DAM0, CLOCK_TYPE_AC2CC3P_TS2), + TYPE(PERIPHC_DAM1, CLOCK_TYPE_AC2CC3P_TS2), + TYPE(PERIPHC_DAM2, CLOCK_TYPE_AC2CC3P_TS2), + TYPE(PERIPHC_HDA2CODEC2X, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_ACTMON, CLOCK_TYPE_PC2CC3S_T), + TYPE(PERIPHC_EXTPERIPH1, CLOCK_TYPE_ASPTE), + + /* 0x50 */ + TYPE(PERIPHC_EXTPERIPH2, CLOCK_TYPE_ASPTE), + TYPE(PERIPHC_EXTPERIPH3, CLOCK_TYPE_ASPTE), + TYPE(PERIPHC_52h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_I2CSLOW, CLOCK_TYPE_PC2CC3S_T), + TYPE(PERIPHC_SYS, CLOCK_TYPE_NONE), + TYPE(PERIPHC_55h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_56h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_57h, CLOCK_TYPE_NONE), + + /* 0x58 */ + TYPE(PERIPHC_58h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_59h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_5ah, CLOCK_TYPE_NONE), + TYPE(PERIPHC_5bh, CLOCK_TYPE_NONE), + TYPE(PERIPHC_SATAOOB, CLOCK_TYPE_PCMT), + TYPE(PERIPHC_SATA, CLOCK_TYPE_PCMT), + TYPE(PERIPHC_HDA, CLOCK_TYPE_PC2CC3M_T), + TYPE(PERIPHC_5fh, CLOCK_TYPE_NONE), + + /* 0x60 */ + TYPE(PERIPHC_XUSB_CORE_HOST, CLOCK_TYPE_NONE), + TYPE(PERIPHC_XUSB_FALCON, CLOCK_TYPE_NONE), + TYPE(PERIPHC_XUSB_FS, CLOCK_TYPE_NONE), + TYPE(PERIPHC_XUSB_CORE_DEV, CLOCK_TYPE_NONE), + TYPE(PERIPHC_XUSB_SS, CLOCK_TYPE_NONE), + TYPE(PERIPHC_CILAB, CLOCK_TYPE_NONE), + TYPE(PERIPHC_CILCD, CLOCK_TYPE_NONE), + TYPE(PERIPHC_CILE, CLOCK_TYPE_NONE), + + /* 0x68 */ + TYPE(PERIPHC_DSIA_LP, CLOCK_TYPE_NONE), + TYPE(PERIPHC_DSIB_LP, CLOCK_TYPE_NONE), + TYPE(PERIPHC_ENTROPY, CLOCK_TYPE_NONE), + TYPE(PERIPHC_DVFS_REF, CLOCK_TYPE_NONE), + TYPE(PERIPHC_DVFS_SOC, CLOCK_TYPE_NONE), + TYPE(PERIPHC_TRACECLKIN, CLOCK_TYPE_NONE), + TYPE(PERIPHC_ADX0, CLOCK_TYPE_NONE), + TYPE(PERIPHC_AMX0, CLOCK_TYPE_NONE), + + /* 0x70 */ + TYPE(PERIPHC_EMC_LATENCY, CLOCK_TYPE_NONE), + TYPE(PERIPHC_SOC_THERM, CLOCK_TYPE_NONE), + TYPE(PERIPHC_72h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_73h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_74h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_75h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_VI_SENSOR2, CLOCK_TYPE_NONE), + TYPE(PERIPHC_I2C6, CLOCK_TYPE_PC2CC3M_T16), + + /* 0x78 */ + TYPE(PERIPHC_78h, CLOCK_TYPE_NONE), + TYPE(PERIPHC_EMC_DLL, CLOCK_TYPE_MCPTM2C2C3), + TYPE(PERIPHC_HDMI_AUDIO, CLOCK_TYPE_NONE), + TYPE(PERIPHC_CLK72MHZ, CLOCK_TYPE_NONE), + TYPE(PERIPHC_ADX1, CLOCK_TYPE_AC2CC3P_TS2), + TYPE(PERIPHC_AMX1, CLOCK_TYPE_AC2CC3P_TS2), + TYPE(PERIPHC_VIC, CLOCK_TYPE_NONE), + TYPE(PERIPHC_7Fh, CLOCK_TYPE_NONE), +}; + +/* + * This array translates a periph_id to a periphc_internal_id + * + * Not present/matched up: + * uint vi_sensor; _VI_SENSOR_0, 0x1A8 + * SPDIF - which is both 0x08 and 0x0c + * + */ +#define NONE(name) (-1) +#define OFFSET(name, value) PERIPHC_ ## name +static s8 periph_id_to_internal_id[PERIPH_ID_COUNT] = { + /* Low word: 31:0 */ + NONE(CPU), + NONE(COP), + NONE(TRIGSYS), + NONE(ISPB), + NONE(RESERVED4), + NONE(TMR), + PERIPHC_UART1, + PERIPHC_UART2, /* and vfir 0x68 */ + + /* 8 */ + NONE(GPIO), + PERIPHC_SDMMC2, + PERIPHC_SPDIF_IN, + PERIPHC_I2S1, + PERIPHC_I2C1, + NONE(RESERVED13), + PERIPHC_SDMMC1, + PERIPHC_SDMMC4, + + /* 16 */ + NONE(TCW), + PERIPHC_PWM, + PERIPHC_I2S2, + NONE(RESERVED19), + PERIPHC_VI, + NONE(RESERVED21), + NONE(USBD), + NONE(ISP), + + /* 24 */ + NONE(RESERVED24), + NONE(RESERVED25), + PERIPHC_DISP2, + PERIPHC_DISP1, + PERIPHC_HOST1X, + NONE(VCP), + PERIPHC_I2S0, + NONE(CACHE2), + + /* Middle word: 63:32 */ + NONE(MEM), + NONE(AHBDMA), + NONE(APBDMA), + NONE(RESERVED35), + NONE(RESERVED36), + NONE(STAT_MON), + NONE(RESERVED38), + NONE(FUSE), + + /* 40 */ + NONE(KFUSE), + PERIPHC_SBC1, /* SBCx = SPIx */ + PERIPHC_NOR, + NONE(RESERVED43), + PERIPHC_SBC2, + NONE(XIO), + PERIPHC_SBC3, + PERIPHC_I2C5, + + /* 48 */ + NONE(DSI), + NONE(RESERVED49), + PERIPHC_HSI, + PERIPHC_HDMI, + NONE(CSI), + NONE(RESERVED53), + PERIPHC_I2C2, + PERIPHC_UART3, + + /* 56 */ + NONE(MIPI_CAL), + PERIPHC_EMC, + NONE(USB2), + NONE(USB3), + NONE(RESERVED60), + PERIPHC_VDE, + NONE(BSEA), + NONE(BSEV), + + /* Upper word 95:64 */ + NONE(RESERVED64), + PERIPHC_UART4, + PERIPHC_UART5, + PERIPHC_I2C3, + PERIPHC_SBC4, + PERIPHC_SDMMC3, + NONE(PCIE), + PERIPHC_OWR, + + /* 72 */ + NONE(AFI), + PERIPHC_CSITE, + NONE(PCIEXCLK), + NONE(AVPUCQ), + NONE(LA), + NONE(TRACECLKIN), + NONE(SOC_THERM), + NONE(DTV), + + /* 80 */ + NONE(RESERVED80), + PERIPHC_I2CSLOW, + NONE(DSIB), + PERIPHC_TSEC, + NONE(RESERVED84), + NONE(RESERVED85), + NONE(RESERVED86), + NONE(EMUCIF), + + /* 88 */ + NONE(RESERVED88), + NONE(XUSB_HOST), + NONE(RESERVED90), + PERIPHC_MSENC, + NONE(RESERVED92), + NONE(RESERVED93), + NONE(RESERVED94), + NONE(XUSB_DEV), + + /* V word: 31:0 */ + NONE(CPUG), + NONE(CPULP), + NONE(V_RESERVED2), + PERIPHC_MSELECT, + NONE(V_RESERVED4), + PERIPHC_I2S3, + PERIPHC_I2S4, + PERIPHC_I2C4, + + /* 104 */ + PERIPHC_SBC5, + PERIPHC_SBC6, + PERIPHC_AUDIO, + NONE(APBIF), + PERIPHC_DAM0, + PERIPHC_DAM1, + PERIPHC_DAM2, + PERIPHC_HDA2CODEC2X, + + /* 112 */ + NONE(ATOMICS), + NONE(V_RESERVED17), + NONE(V_RESERVED18), + NONE(V_RESERVED19), + NONE(V_RESERVED20), + NONE(V_RESERVED21), + NONE(V_RESERVED22), + PERIPHC_ACTMON, + + /* 120 */ + NONE(EXTPERIPH1), + NONE(EXTPERIPH2), + NONE(EXTPERIPH3), + NONE(OOB), + PERIPHC_SATA, + PERIPHC_HDA, + NONE(TZRAM), + NONE(SE), + + /* W word: 31:0 */ + NONE(HDA2HDMICODEC), + NONE(SATACOLD), + NONE(W_RESERVED2), + NONE(W_RESERVED3), + NONE(W_RESERVED4), + NONE(W_RESERVED5), + NONE(W_RESERVED6), + NONE(W_RESERVED7), + + /* 136 */ + NONE(CEC), + NONE(W_RESERVED9), + NONE(W_RESERVED10), + NONE(W_RESERVED11), + NONE(W_RESERVED12), + NONE(W_RESERVED13), + NONE(XUSB_PADCTL), + NONE(W_RESERVED15), + + /* 144 */ + NONE(W_RESERVED16), + NONE(W_RESERVED17), + NONE(W_RESERVED18), + NONE(W_RESERVED19), + NONE(W_RESERVED20), + NONE(ENTROPY), + NONE(DDS), + NONE(W_RESERVED23), + + /* 152 */ + NONE(DP2), + NONE(AMX0), + NONE(ADX0), + NONE(DVFS), + NONE(XUSB_SS), + NONE(W_RESERVED29), + NONE(W_RESERVED30), + NONE(W_RESERVED31), + + /* X word: 31:0 */ + NONE(SPARE), + NONE(X_RESERVED1), + NONE(X_RESERVED2), + NONE(X_RESERVED3), + NONE(CAM_MCLK), + NONE(CAM_MCLK2), + PERIPHC_I2C6, + NONE(X_RESERVED7), + + /* 168 */ + NONE(X_RESERVED8), + NONE(X_RESERVED9), + NONE(X_RESERVED10), + NONE(VIM2_CLK), + NONE(X_RESERVED12), + NONE(X_RESERVED13), + NONE(EMC_DLL), + NONE(X_RESERVED15), + + /* 176 */ + NONE(HDMI_AUDIO), + NONE(CLK72MHZ), + NONE(VIC), + NONE(X_RESERVED19), + NONE(ADX1), + NONE(DPAUX), + NONE(SOR0), + NONE(X_RESERVED23), + + /* 184 */ + NONE(GPU), + NONE(AMX1), + NONE(X_RESERVED26), + NONE(X_RESERVED27), + NONE(X_RESERVED28), + NONE(X_RESERVED29), + NONE(X_RESERVED30), + NONE(X_RESERVED31), +}; + +/* + * Get the oscillator frequency, from the corresponding hardware configuration + * field. Note that Tegra30+ support 3 new higher freqs, but we map back + * to the old T20 freqs. Support for the higher oscillators is TBD. + */ +enum clock_osc_freq clock_get_osc_freq(void) +{ + struct clk_rst_ctlr *clkrst = + (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; + u32 reg; + + reg = readl(&clkrst->crc_osc_ctrl); + reg = (reg & OSC_FREQ_MASK) >> OSC_FREQ_SHIFT; + + if (reg & 1) /* one of the newer freqs */ + printf("Warning: OSC_FREQ is unsupported! (%d)\n", reg); + + return reg >> 2; /* Map to most common (T20) freqs */ +} + +/* Returns a pointer to the clock source register for a peripheral */ +u32 *get_periph_source_reg(enum periph_id periph_id) +{ + struct clk_rst_ctlr *clkrst = + (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; + enum periphc_internal_id internal_id; + + /* Coresight is a special case */ + if (periph_id == PERIPH_ID_CSI) + return &clkrst->crc_clk_src[PERIPH_ID_CSI+1]; + + assert(periph_id >= PERIPH_ID_FIRST && periph_id < PERIPH_ID_COUNT); + internal_id = periph_id_to_internal_id[periph_id]; + assert(internal_id != -1); + if (internal_id >= PERIPHC_VW_FIRST) { + internal_id -= PERIPHC_VW_FIRST; + return &clkrst->crc_clk_src_vw[internal_id]; + } else { + return &clkrst->crc_clk_src[internal_id]; + } +} + +/** + * Given a peripheral ID and the required source clock, this returns which + * value should be programmed into the source mux for that peripheral. + * + * There is special code here to handle the one source type with 5 sources. + * + * @param periph_id peripheral to start + * @param source PLL id of required parent clock + * @param mux_bits Set to number of bits in mux register: 2 or 4 + * @param divider_bits Set to number of divider bits (8 or 16) + * @return mux value (0-4, or -1 if not found) + */ +int get_periph_clock_source(enum periph_id periph_id, + enum clock_id parent, int *mux_bits, int *divider_bits) +{ + enum clock_type_id type; + enum periphc_internal_id internal_id; + int mux; + + assert(clock_periph_id_isvalid(periph_id)); + + internal_id = periph_id_to_internal_id[periph_id]; + assert(periphc_internal_id_isvalid(internal_id)); + + type = clock_periph_type[internal_id]; + assert(clock_type_id_isvalid(type)); + + *mux_bits = clock_source[type][CLOCK_MAX_MUX]; + + if (type == CLOCK_TYPE_PC2CC3M_T16) + *divider_bits = 16; + else + *divider_bits = 8; + + for (mux = 0; mux < CLOCK_MAX_MUX; mux++) + if (clock_source[type][mux] == parent) + return mux; + + /* if we get here, either us or the caller has made a mistake */ + printf("Caller requested bad clock: periph=%d, parent=%d\n", periph_id, + parent); + return -1; +} + +void clock_set_enable(enum periph_id periph_id, int enable) +{ + struct clk_rst_ctlr *clkrst = + (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; + u32 *clk; + u32 reg; + + /* Enable/disable the clock to this peripheral */ + assert(clock_periph_id_isvalid(periph_id)); + if ((int)periph_id < (int)PERIPH_ID_VW_FIRST) + clk = &clkrst->crc_clk_out_enb[PERIPH_REG(periph_id)]; + else + clk = &clkrst->crc_clk_out_enb_vw[PERIPH_REG(periph_id)]; + reg = readl(clk); + if (enable) + reg |= PERIPH_MASK(periph_id); + else + reg &= ~PERIPH_MASK(periph_id); + writel(reg, clk); +} + +void reset_set_enable(enum periph_id periph_id, int enable) +{ + struct clk_rst_ctlr *clkrst = + (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; + u32 *reset; + u32 reg; + + /* Enable/disable reset to the peripheral */ + assert(clock_periph_id_isvalid(periph_id)); + if (periph_id < PERIPH_ID_VW_FIRST) + reset = &clkrst->crc_rst_dev[PERIPH_REG(periph_id)]; + else + reset = &clkrst->crc_rst_dev_vw[PERIPH_REG(periph_id)]; + reg = readl(reset); + if (enable) + reg |= PERIPH_MASK(periph_id); + else + reg &= ~PERIPH_MASK(periph_id); + writel(reg, reset); +} + +#ifdef CONFIG_OF_CONTROL +/* + * Convert a device tree clock ID to our peripheral ID. They are mostly + * the same but we are very cautious so we check that a valid clock ID is + * provided. + * + * @param clk_id Clock ID according to tegra124 device tree binding + * @return peripheral ID, or PERIPH_ID_NONE if the clock ID is invalid + */ +enum periph_id clk_id_to_periph_id(int clk_id) +{ + if (clk_id > PERIPH_ID_COUNT) + return PERIPH_ID_NONE; + + switch (clk_id) { + case PERIPH_ID_RESERVED4: + case PERIPH_ID_RESERVED25: + case PERIPH_ID_RESERVED35: + case PERIPH_ID_RESERVED36: + case PERIPH_ID_RESERVED38: + case PERIPH_ID_RESERVED43: + case PERIPH_ID_RESERVED49: + case PERIPH_ID_RESERVED53: + case PERIPH_ID_RESERVED64: + case PERIPH_ID_RESERVED84: + case PERIPH_ID_RESERVED85: + case PERIPH_ID_RESERVED86: + case PERIPH_ID_RESERVED88: + case PERIPH_ID_RESERVED90: + case PERIPH_ID_RESERVED92: + case PERIPH_ID_RESERVED93: + case PERIPH_ID_RESERVED94: + case PERIPH_ID_V_RESERVED2: + case PERIPH_ID_V_RESERVED4: + case PERIPH_ID_V_RESERVED17: + case PERIPH_ID_V_RESERVED18: + case PERIPH_ID_V_RESERVED19: + case PERIPH_ID_V_RESERVED20: + case PERIPH_ID_V_RESERVED21: + case PERIPH_ID_V_RESERVED22: + case PERIPH_ID_W_RESERVED2: + case PERIPH_ID_W_RESERVED3: + case PERIPH_ID_W_RESERVED4: + case PERIPH_ID_W_RESERVED5: + case PERIPH_ID_W_RESERVED6: + case PERIPH_ID_W_RESERVED7: + case PERIPH_ID_W_RESERVED9: + case PERIPH_ID_W_RESERVED10: + case PERIPH_ID_W_RESERVED11: + case PERIPH_ID_W_RESERVED12: + case PERIPH_ID_W_RESERVED13: + case PERIPH_ID_W_RESERVED15: + case PERIPH_ID_W_RESERVED16: + case PERIPH_ID_W_RESERVED17: + case PERIPH_ID_W_RESERVED18: + case PERIPH_ID_W_RESERVED19: + case PERIPH_ID_W_RESERVED20: + case PERIPH_ID_W_RESERVED23: + case PERIPH_ID_W_RESERVED29: + case PERIPH_ID_W_RESERVED30: + case PERIPH_ID_W_RESERVED31: + return PERIPH_ID_NONE; + default: + return clk_id; + } +} +#endif /* CONFIG_OF_CONTROL */ + +void clock_early_init(void) +{ + struct clk_rst_ctlr *clkrst = + (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; + + tegra30_set_up_pllp(); + + /* + * PLLC output frequency set to 600Mhz + * PLLD output frequency set to 925Mhz + */ + switch (clock_get_osc_freq()) { + case CLOCK_OSC_FREQ_12_0: /* OSC is 12Mhz */ + clock_set_rate(CLOCK_ID_CGENERAL, 600, 12, 0, 8); + clock_set_rate(CLOCK_ID_DISPLAY, 925, 12, 0, 12); + break; + + case CLOCK_OSC_FREQ_26_0: /* OSC is 26Mhz */ + clock_set_rate(CLOCK_ID_CGENERAL, 600, 26, 0, 8); + clock_set_rate(CLOCK_ID_DISPLAY, 925, 26, 0, 12); + break; + + case CLOCK_OSC_FREQ_13_0: /* OSC is 13Mhz */ + clock_set_rate(CLOCK_ID_CGENERAL, 600, 13, 0, 8); + clock_set_rate(CLOCK_ID_DISPLAY, 925, 13, 0, 12); + break; + case CLOCK_OSC_FREQ_19_2: + default: + /* + * These are not supported. It is too early to print a + * message and the UART likely won't work anyway due to the + * oscillator being wrong. + */ + break; + } + + /* PLLC_MISC2: Set dynramp_stepA/B. MISC2 maps to pll_out[1] */ + writel(0x00561600, &clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_out[1]); + + /* PLLC_MISC: Set LOCK_ENABLE */ + writel(0x01000000, &clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_misc); + udelay(2); + + /* PLLD_MISC: Set CLKENABLE, CPCON 12, LFCON 1 */ + writel(0x40000C10, &clkrst->crc_pll[CLOCK_ID_DISPLAY].pll_misc); + udelay(2); +} + +void arch_timer_init(void) +{ + struct sysctr_ctlr *sysctr = (struct sysctr_ctlr *)NV_PA_TSC_BASE; + u32 freq, val; + + freq = clock_get_rate(CLOCK_ID_OSC); + debug("%s: osc freq is %dHz [0x%08X]\n", __func__, freq, freq); + + /* ARM CNTFRQ */ + asm("mcr p15, 0, %0, c14, c0, 0\n" : : "r" (freq)); + + /* Only Tegra114+ has the System Counter regs */ + debug("%s: setting CNTFID0 to 0x%08X\n", __func__, freq); + writel(freq, &sysctr->cntfid0); + + val = readl(&sysctr->cntcr); + val |= TSC_CNTCR_ENABLE | TSC_CNTCR_HDBG; + writel(val, &sysctr->cntcr); + debug("%s: TSC CNTCR = 0x%08X\n", __func__, val); +} + +#define PLLE_SS_CNTL 0x68 +#define PLLE_SS_CNTL_SSCINCINTR(x) (((x) & 0x3f) << 24) +#define PLLE_SS_CNTL_SSCINC(x) (((x) & 0xff) << 16) +#define PLLE_SS_CNTL_SSCINVERT (1 << 15) +#define PLLE_SS_CNTL_SSCCENTER (1 << 14) +#define PLLE_SS_CNTL_SSCBYP (1 << 12) +#define PLLE_SS_CNTL_INTERP_RESET (1 << 11) +#define PLLE_SS_CNTL_BYPASS_SS (1 << 10) +#define PLLE_SS_CNTL_SSCMAX(x) (((x) & 0x1ff) << 0) + +#define PLLE_BASE 0x0e8 +#define PLLE_BASE_ENABLE (1 << 30) +#define PLLE_BASE_LOCK_OVERRIDE (1 << 29) +#define PLLE_BASE_PLDIV_CML(x) (((x) & 0xf) << 24) +#define PLLE_BASE_NDIV(x) (((x) & 0xff) << 8) +#define PLLE_BASE_MDIV(x) (((x) & 0xff) << 0) + +#define PLLE_MISC 0x0ec +#define PLLE_MISC_IDDQ_SWCTL (1 << 14) +#define PLLE_MISC_IDDQ_OVERRIDE (1 << 13) +#define PLLE_MISC_LOCK_ENABLE (1 << 9) +#define PLLE_MISC_PTS (1 << 8) +#define PLLE_MISC_VREG_BG_CTRL(x) (((x) & 0x3) << 4) +#define PLLE_MISC_VREG_CTRL(x) (((x) & 0x3) << 2) + +#define PLLE_AUX 0x48c +#define PLLE_AUX_SEQ_ENABLE (1 << 24) +#define PLLE_AUX_ENABLE_SWCTL (1 << 4) + +int tegra_plle_enable(void) +{ + unsigned int m = 1, n = 200, cpcon = 13; + u32 value; + + value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE); + value &= ~PLLE_BASE_LOCK_OVERRIDE; + writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE); + + value = readl(NV_PA_CLK_RST_BASE + PLLE_AUX); + value |= PLLE_AUX_ENABLE_SWCTL; + value &= ~PLLE_AUX_SEQ_ENABLE; + writel(value, NV_PA_CLK_RST_BASE + PLLE_AUX); + + udelay(1); + + value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC); + value |= PLLE_MISC_IDDQ_SWCTL; + value &= ~PLLE_MISC_IDDQ_OVERRIDE; + value |= PLLE_MISC_LOCK_ENABLE; + value |= PLLE_MISC_PTS; + value |= PLLE_MISC_VREG_BG_CTRL(3); + value |= PLLE_MISC_VREG_CTRL(2); + writel(value, NV_PA_CLK_RST_BASE + PLLE_MISC); + + udelay(5); + + value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL); + value |= PLLE_SS_CNTL_SSCBYP | PLLE_SS_CNTL_INTERP_RESET | + PLLE_SS_CNTL_BYPASS_SS; + writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL); + + value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE); + value &= ~PLLE_BASE_PLDIV_CML(0xf); + value &= ~PLLE_BASE_NDIV(0xff); + value &= ~PLLE_BASE_MDIV(0xff); + value |= PLLE_BASE_PLDIV_CML(cpcon); + value |= PLLE_BASE_NDIV(n); + value |= PLLE_BASE_MDIV(m); + writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE); + + udelay(1); + + value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE); + value |= PLLE_BASE_ENABLE; + writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE); + + /* wait for lock */ + udelay(300); + + value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL); + value &= ~PLLE_SS_CNTL_SSCINVERT; + value &= ~PLLE_SS_CNTL_SSCCENTER; + + value &= ~PLLE_SS_CNTL_SSCINCINTR(0x3f); + value &= ~PLLE_SS_CNTL_SSCINC(0xff); + value &= ~PLLE_SS_CNTL_SSCMAX(0x1ff); + + value |= PLLE_SS_CNTL_SSCINCINTR(0x20); + value |= PLLE_SS_CNTL_SSCINC(0x01); + value |= PLLE_SS_CNTL_SSCMAX(0x25); + + writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL); + + value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL); + value &= ~PLLE_SS_CNTL_SSCBYP; + value &= ~PLLE_SS_CNTL_BYPASS_SS; + writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL); + + udelay(1); + + value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL); + value &= ~PLLE_SS_CNTL_INTERP_RESET; + writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL); + + udelay(1); + + return 0; +} diff --git a/arch/arm/mach-tegra/tegra124/cpu.c b/arch/arm/mach-tegra/tegra124/cpu.c new file mode 100644 index 0000000..974f203 --- /dev/null +++ b/arch/arm/mach-tegra/tegra124/cpu.c @@ -0,0 +1,265 @@ +/* + * (C) Copyright 2013 + * NVIDIA Corporation <www.nvidia.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/ahb.h> +#include <asm/arch/clock.h> +#include <asm/arch/flow.h> +#include <asm/arch/pinmux.h> +#include <asm/arch/tegra.h> +#include <asm/arch-tegra/clk_rst.h> +#include <asm/arch-tegra/pmc.h> +#include <asm/arch-tegra/ap.h> +#include "../cpu.h" + +/* Tegra124-specific CPU init code */ + +static void enable_cpu_power_rail(void) +{ + struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE; + + debug("enable_cpu_power_rail entry\n"); + + /* un-tristate PWR_I2C SCL/SDA, rest of the defaults are correct */ + pinmux_tristate_disable(PMUX_PINGRP_PWR_I2C_SCL_PZ6); + pinmux_tristate_disable(PMUX_PINGRP_PWR_I2C_SDA_PZ7); + + pmic_enable_cpu_vdd(); + + /* + * Set CPUPWRGOOD_TIMER - APB clock is 1/2 of SCLK (102MHz), + * set it for 5ms as per SysEng (102MHz*5ms = 510000 (7C830h). + */ + writel(0x7C830, &pmc->pmc_cpupwrgood_timer); + + /* Set polarity to 0 (normal) and enable CPUPWRREQ_OE */ + clrbits_le32(&pmc->pmc_cntrl, CPUPWRREQ_POL); + setbits_le32(&pmc->pmc_cntrl, CPUPWRREQ_OE); +} + +static void enable_cpu_clocks(void) +{ + struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; + u32 reg; + + debug("enable_cpu_clocks entry\n"); + + /* Wait for PLL-X to lock */ + do { + reg = readl(&clkrst->crc_pll_simple[SIMPLE_PLLX].pll_base); + debug("%s: PLLX base = 0x%08X\n", __func__, reg); + } while ((reg & PLL_LOCK_MASK) == 0); + + debug("%s: PLLX locked, delay for stable clocks\n", __func__); + /* Wait until all clocks are stable */ + udelay(PLL_STABILIZATION_DELAY); + + debug("%s: Setting CCLK_BURST and DIVIDER\n", __func__); + writel(CCLK_BURST_POLICY, &clkrst->crc_cclk_brst_pol); + writel(SUPER_CCLK_DIVIDER, &clkrst->crc_super_cclk_div); + + debug("%s: Enabling clock to all CPUs\n", __func__); + /* Enable the clock to all CPUs */ + reg = CLR_CPU3_CLK_STP | CLR_CPU2_CLK_STP | CLR_CPU1_CLK_STP | + CLR_CPU0_CLK_STP; + writel(reg, &clkrst->crc_clk_cpu_cmplx_clr); + + debug("%s: Enabling main CPU complex clocks\n", __func__); + /* Always enable the main CPU complex clocks */ + clock_enable(PERIPH_ID_CPU); + clock_enable(PERIPH_ID_CPULP); + clock_enable(PERIPH_ID_CPUG); + + debug("%s: Done\n", __func__); +} + +static void remove_cpu_resets(void) +{ + struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; + u32 reg; + + debug("remove_cpu_resets entry\n"); + + /* Take the slow and fast partitions out of reset */ + reg = CLR_NONCPURESET; + writel(reg, &clkrst->crc_rst_cpulp_cmplx_clr); + writel(reg, &clkrst->crc_rst_cpug_cmplx_clr); + + /* Clear the SW-controlled reset of the slow cluster */ + reg = CLR_CPURESET0 | CLR_DBGRESET0 | CLR_CORERESET0 | CLR_CXRESET0 | + CLR_L2RESET | CLR_PRESETDBG; + writel(reg, &clkrst->crc_rst_cpulp_cmplx_clr); + + /* Clear the SW-controlled reset of the fast cluster */ + reg = CLR_CPURESET0 | CLR_DBGRESET0 | CLR_CORERESET0 | CLR_CXRESET0 | + CLR_CPURESET1 | CLR_DBGRESET1 | CLR_CORERESET1 | CLR_CXRESET1 | + CLR_CPURESET2 | CLR_DBGRESET2 | CLR_CORERESET2 | CLR_CXRESET2 | + CLR_CPURESET3 | CLR_DBGRESET3 | CLR_CORERESET3 | CLR_CXRESET3 | + CLR_L2RESET | CLR_PRESETDBG; + writel(reg, &clkrst->crc_rst_cpug_cmplx_clr); +} + +/** + * The Tegra124 requires some special clock initialization, including setting up + * the DVC I2C, turning on MSELECT and selecting the G CPU cluster + */ +void tegra124_init_clocks(void) +{ + struct flow_ctlr *flow = (struct flow_ctlr *)NV_PA_FLOW_BASE; + struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE; + struct clk_rst_ctlr *clkrst = + (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; + u32 val; + + debug("tegra124_init_clocks entry\n"); + + /* Set active CPU cluster to G */ + clrbits_le32(&flow->cluster_control, 1); + + /* Change the oscillator drive strength */ + val = readl(&clkrst->crc_osc_ctrl); + val &= ~OSC_XOFS_MASK; + val |= (OSC_DRIVE_STRENGTH << OSC_XOFS_SHIFT); + writel(val, &clkrst->crc_osc_ctrl); + + /* Update same value in PMC_OSC_EDPD_OVER XOFS field for warmboot */ + val = readl(&pmc->pmc_osc_edpd_over); + val &= ~PMC_XOFS_MASK; + val |= (OSC_DRIVE_STRENGTH << PMC_XOFS_SHIFT); + writel(val, &pmc->pmc_osc_edpd_over); + + /* Set HOLD_CKE_LOW_EN to 1 */ + setbits_le32(&pmc->pmc_cntrl2, HOLD_CKE_LOW_EN); + + debug("Setting up PLLX\n"); + init_pllx(); + + val = (1 << CLK_SYS_RATE_AHB_RATE_SHIFT); + writel(val, &clkrst->crc_clk_sys_rate); + + /* Enable clocks to required peripherals. TBD - minimize this list */ + debug("Enabling clocks\n"); + + clock_set_enable(PERIPH_ID_CACHE2, 1); + clock_set_enable(PERIPH_ID_GPIO, 1); + clock_set_enable(PERIPH_ID_TMR, 1); + clock_set_enable(PERIPH_ID_CPU, 1); + clock_set_enable(PERIPH_ID_EMC, 1); + clock_set_enable(PERIPH_ID_I2C5, 1); + clock_set_enable(PERIPH_ID_APBDMA, 1); + clock_set_enable(PERIPH_ID_MEM, 1); + clock_set_enable(PERIPH_ID_CORESIGHT, 1); + clock_set_enable(PERIPH_ID_MSELECT, 1); + clock_set_enable(PERIPH_ID_DVFS, 1); + + /* + * Set MSELECT clock source as PLLP (00), and ask for a clock + * divider that would set the MSELECT clock at 102MHz for a + * PLLP base of 408MHz. + */ + clock_ll_set_source_divisor(PERIPH_ID_MSELECT, 0, + CLK_DIVIDER(NVBL_PLLP_KHZ, 102000)); + + /* Give clock time to stabilize */ + udelay(IO_STABILIZATION_DELAY); + + /* I2C5 (DVC) gets CLK_M and a divisor of 17 */ + clock_ll_set_source_divisor(PERIPH_ID_I2C5, 3, 16); + + /* Give clock time to stabilize */ + udelay(IO_STABILIZATION_DELAY); + + /* Take required peripherals out of reset */ + debug("Taking periphs out of reset\n"); + reset_set_enable(PERIPH_ID_CACHE2, 0); + reset_set_enable(PERIPH_ID_GPIO, 0); + reset_set_enable(PERIPH_ID_TMR, 0); + reset_set_enable(PERIPH_ID_COP, 0); + reset_set_enable(PERIPH_ID_EMC, 0); + reset_set_enable(PERIPH_ID_I2C5, 0); + reset_set_enable(PERIPH_ID_APBDMA, 0); + reset_set_enable(PERIPH_ID_MEM, 0); + reset_set_enable(PERIPH_ID_CORESIGHT, 0); + reset_set_enable(PERIPH_ID_MSELECT, 0); + reset_set_enable(PERIPH_ID_DVFS, 0); + + debug("tegra124_init_clocks exit\n"); +} + +static bool is_partition_powered(u32 partid) +{ + struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE; + u32 reg; + + /* Get power gate status */ + reg = readl(&pmc->pmc_pwrgate_status); + return !!(reg & (1 << partid)); +} + +static void power_partition(u32 partid) +{ + struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE; + + debug("%s: part ID = %08X\n", __func__, partid); + /* Is the partition already on? */ + if (!is_partition_powered(partid)) { + /* No, toggle the partition power state (OFF -> ON) */ + debug("power_partition, toggling state\n"); + writel(START_CP | partid, &pmc->pmc_pwrgate_toggle); + + /* Wait for the power to come up */ + while (!is_partition_powered(partid)) + ; + + /* Give I/O signals time to stabilize */ + udelay(IO_STABILIZATION_DELAY); + } +} + +void powerup_cpus(void) +{ + debug("powerup_cpus entry\n"); + + /* We boot to the fast cluster */ + debug("powerup_cpus entry: G cluster\n"); + + /* Power up the fast cluster rail partition */ + debug("powerup_cpus: CRAIL\n"); + power_partition(CRAIL); + + /* Power up the fast cluster non-CPU partition */ + debug("powerup_cpus: C0NC\n"); + power_partition(C0NC); + + /* Power up the fast cluster CPU0 partition */ + debug("powerup_cpus: CE0\n"); + power_partition(CE0); + + debug("powerup_cpus: done\n"); +} + +void start_cpu(u32 reset_vector) +{ + struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE; + + debug("start_cpu entry, reset_vector = %x\n", reset_vector); + + tegra124_init_clocks(); + + /* Set power-gating timer multiplier */ + writel((MULT_8 << TIMER_MULT_SHIFT) | (MULT_8 << TIMER_MULT_CPU_SHIFT), + &pmc->pmc_pwrgate_timer_mult); + + enable_cpu_power_rail(); + enable_cpu_clocks(); + clock_enable_coresight(1); + remove_cpu_resets(); + writel(reset_vector, EXCEP_VECTOR_CPU_RESET_VECTOR); + powerup_cpus(); + debug("start_cpu exit, should continue @ reset_vector\n"); +} diff --git a/arch/arm/mach-tegra/tegra124/funcmux.c b/arch/arm/mach-tegra/tegra124/funcmux.c new file mode 100644 index 0000000..cced787 --- /dev/null +++ b/arch/arm/mach-tegra/tegra124/funcmux.c @@ -0,0 +1,71 @@ +/* + * (C) Copyright 2013 + * NVIDIA Corporation <www.nvidia.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* Tegra124 high-level function multiplexing */ + +#include <common.h> +#include <asm/arch/clock.h> +#include <asm/arch/funcmux.h> +#include <asm/arch/pinmux.h> + +int funcmux_select(enum periph_id id, int config) +{ + int bad_config = config != FUNCMUX_DEFAULT; + + switch (id) { + case PERIPH_ID_UART4: + switch (config) { + case FUNCMUX_UART4_GPIO: /* TXD,RXD,CTS,RTS */ + pinmux_set_func(PMUX_PINGRP_PJ7, PMUX_FUNC_UARTD); + pinmux_set_func(PMUX_PINGRP_PB0, PMUX_FUNC_UARTD); + pinmux_set_func(PMUX_PINGRP_PB1, PMUX_FUNC_UARTD); + pinmux_set_func(PMUX_PINGRP_PK7, PMUX_FUNC_UARTD); + + pinmux_set_io(PMUX_PINGRP_PJ7, PMUX_PIN_OUTPUT); + pinmux_set_io(PMUX_PINGRP_PB0, PMUX_PIN_INPUT); + pinmux_set_io(PMUX_PINGRP_PB1, PMUX_PIN_INPUT); + pinmux_set_io(PMUX_PINGRP_PK7, PMUX_PIN_OUTPUT); + + pinmux_tristate_disable(PMUX_PINGRP_PJ7); + pinmux_tristate_disable(PMUX_PINGRP_PB0); + pinmux_tristate_disable(PMUX_PINGRP_PB1); + pinmux_tristate_disable(PMUX_PINGRP_PK7); + break; + } + break; + + case PERIPH_ID_UART1: + switch (config) { + case FUNCMUX_UART1_KBC: + pinmux_set_func(PMUX_PINGRP_KB_ROW9_PS1, + PMUX_FUNC_UARTA); + pinmux_set_func(PMUX_PINGRP_KB_ROW10_PS2, + PMUX_FUNC_UARTA); + + pinmux_set_io(PMUX_PINGRP_KB_ROW9_PS1, PMUX_PIN_OUTPUT); + pinmux_set_io(PMUX_PINGRP_KB_ROW10_PS2, PMUX_PIN_INPUT); + + pinmux_tristate_disable(PMUX_PINGRP_KB_ROW9_PS1); + pinmux_tristate_disable(PMUX_PINGRP_KB_ROW10_PS2); + break; + } + break; + + /* Add other periph IDs here as needed */ + + default: + debug("%s: invalid periph_id %d", __func__, id); + return -1; + } + + if (bad_config) { + debug("%s: invalid config %d for periph_id %d", __func__, + config, id); + return -1; + } + return 0; +} diff --git a/arch/arm/mach-tegra/tegra124/pinmux.c b/arch/arm/mach-tegra/tegra124/pinmux.c new file mode 100644 index 0000000..c6685ea --- /dev/null +++ b/arch/arm/mach-tegra/tegra124/pinmux.c @@ -0,0 +1,306 @@ +/* + * Copyright (c) 2013-2014, NVIDIA CORPORATION. All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/pinmux.h> + +#define PIN(pin, f0, f1, f2, f3) \ + { \ + .funcs = { \ + PMUX_FUNC_##f0, \ + PMUX_FUNC_##f1, \ + PMUX_FUNC_##f2, \ + PMUX_FUNC_##f3, \ + }, \ + } + +#define PIN_RESERVED {} + +static const struct pmux_pingrp_desc tegra124_pingroups[] = { + /* pin, f0, f1, f2, f3 */ + /* Offset 0x3000 */ + PIN(ULPI_DATA0_PO1, SPI3, HSI, UARTA, ULPI), + PIN(ULPI_DATA1_PO2, SPI3, HSI, UARTA, ULPI), + PIN(ULPI_DATA2_PO3, SPI3, HSI, UARTA, ULPI), + PIN(ULPI_DATA3_PO4, SPI3, HSI, UARTA, ULPI), + PIN(ULPI_DATA4_PO5, SPI2, HSI, UARTA, ULPI), + PIN(ULPI_DATA5_PO6, SPI2, HSI, UARTA, ULPI), + PIN(ULPI_DATA6_PO7, SPI2, HSI, UARTA, ULPI), + PIN(ULPI_DATA7_PO0, SPI2, HSI, UARTA, ULPI), + PIN(ULPI_CLK_PY0, SPI1, SPI5, UARTD, ULPI), + PIN(ULPI_DIR_PY1, SPI1, SPI5, UARTD, ULPI), + PIN(ULPI_NXT_PY2, SPI1, SPI5, UARTD, ULPI), + PIN(ULPI_STP_PY3, SPI1, SPI5, UARTD, ULPI), + PIN(DAP3_FS_PP0, I2S2, SPI5, DISPLAYA, DISPLAYB), + PIN(DAP3_DIN_PP1, I2S2, SPI5, DISPLAYA, DISPLAYB), + PIN(DAP3_DOUT_PP2, I2S2, SPI5, DISPLAYA, RSVD4), + PIN(DAP3_SCLK_PP3, I2S2, SPI5, RSVD3, DISPLAYB), + PIN(PV0, RSVD1, RSVD2, RSVD3, RSVD4), + PIN(PV1, RSVD1, RSVD2, RSVD3, RSVD4), + PIN(SDMMC1_CLK_PZ0, SDMMC1, CLK12, RSVD3, RSVD4), + PIN(SDMMC1_CMD_PZ1, SDMMC1, SPDIF, SPI4, UARTA), + PIN(SDMMC1_DAT3_PY4, SDMMC1, SPDIF, SPI4, UARTA), + PIN(SDMMC1_DAT2_PY5, SDMMC1, PWM0, SPI4, UARTA), + PIN(SDMMC1_DAT1_PY6, SDMMC1, PWM1, SPI4, UARTA), + PIN(SDMMC1_DAT0_PY7, SDMMC1, RSVD2, SPI4, UARTA), + PIN_RESERVED, + PIN_RESERVED, + /* Offset 0x3068 */ + PIN(CLK2_OUT_PW5, EXTPERIPH2, RSVD2, RSVD3, RSVD4), + PIN(CLK2_REQ_PCC5, DAP, RSVD2, RSVD3, RSVD4), + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + /* Offset 0x3110 */ + PIN(HDMI_INT_PN7, RSVD1, RSVD2, RSVD3, RSVD4), + PIN(DDC_SCL_PV4, I2C4, RSVD2, RSVD3, RSVD4), + PIN(DDC_SDA_PV5, I2C4, RSVD2, RSVD3, RSVD4), + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + /* Offset 0x3164 */ + PIN(UART2_RXD_PC3, IRDA, SPDIF, UARTA, SPI4), + PIN(UART2_TXD_PC2, IRDA, SPDIF, UARTA, SPI4), + PIN(UART2_RTS_N_PJ6, UARTA, UARTB, GMI, SPI4), + PIN(UART2_CTS_N_PJ5, UARTA, UARTB, GMI, SPI4), + PIN(UART3_TXD_PW6, UARTC, RSVD2, GMI, SPI4), + PIN(UART3_RXD_PW7, UARTC, RSVD2, GMI, SPI4), + PIN(UART3_CTS_N_PA1, UARTC, SDMMC1, DTV, GMI), + PIN(UART3_RTS_N_PC0, UARTC, PWM0, DTV, GMI), + PIN(PU0, OWR, UARTA, GMI, RSVD4), + PIN(PU1, RSVD1, UARTA, GMI, RSVD4), + PIN(PU2, RSVD1, UARTA, GMI, RSVD4), + PIN(PU3, PWM0, UARTA, GMI, DISPLAYB), + PIN(PU4, PWM1, UARTA, GMI, DISPLAYB), + PIN(PU5, PWM2, UARTA, GMI, DISPLAYB), + PIN(PU6, PWM3, UARTA, RSVD3, GMI), + PIN(GEN1_I2C_SDA_PC5, I2C1, RSVD2, RSVD3, RSVD4), + PIN(GEN1_I2C_SCL_PC4, I2C1, RSVD2, RSVD3, RSVD4), + PIN(DAP4_FS_PP4, I2S3, GMI, DTV, RSVD4), + PIN(DAP4_DIN_PP5, I2S3, GMI, RSVD3, RSVD4), + PIN(DAP4_DOUT_PP6, I2S3, GMI, DTV, RSVD4), + PIN(DAP4_SCLK_PP7, I2S3, GMI, RSVD3, RSVD4), + PIN(CLK3_OUT_PEE0, EXTPERIPH3, RSVD2, RSVD3, RSVD4), + PIN(CLK3_REQ_PEE1, DEV3, RSVD2, RSVD3, RSVD4), + PIN(PC7, RSVD1, RSVD2, GMI, GMI_ALT), + PIN(PI5, SDMMC2, RSVD2, GMI, RSVD4), + PIN(PI7, RSVD1, TRACE, GMI, DTV), + PIN(PK0, RSVD1, SDMMC3, GMI, SOC), + PIN(PK1, SDMMC2, TRACE, GMI, RSVD4), + PIN(PJ0, RSVD1, RSVD2, GMI, USB), + PIN(PJ2, RSVD1, RSVD2, GMI, SOC), + PIN(PK3, SDMMC2, TRACE, GMI, CCLA), + PIN(PK4, SDMMC2, RSVD2, GMI, GMI_ALT), + PIN(PK2, RSVD1, RSVD2, GMI, RSVD4), + PIN(PI3, RSVD1, RSVD2, GMI, SPI4), + PIN(PI6, RSVD1, RSVD2, GMI, SDMMC2), + PIN(PG0, RSVD1, RSVD2, GMI, RSVD4), + PIN(PG1, RSVD1, RSVD2, GMI, RSVD4), + PIN(PG2, RSVD1, TRACE, GMI, RSVD4), + PIN(PG3, RSVD1, TRACE, GMI, RSVD4), + PIN(PG4, RSVD1, TMDS, GMI, SPI4), + PIN(PG5, RSVD1, RSVD2, GMI, SPI4), + PIN(PG6, RSVD1, RSVD2, GMI, SPI4), + PIN(PG7, RSVD1, RSVD2, GMI, SPI4), + PIN(PH0, PWM0, TRACE, GMI, DTV), + PIN(PH1, PWM1, TMDS, GMI, DISPLAYA), + PIN(PH2, PWM2, TMDS, GMI, CLDVFS), + PIN(PH3, PWM3, SPI4, GMI, CLDVFS), + PIN(PH4, SDMMC2, RSVD2, GMI, RSVD4), + PIN(PH5, SDMMC2, RSVD2, GMI, RSVD4), + PIN(PH6, SDMMC2, TRACE, GMI, DTV), + PIN(PH7, SDMMC2, TRACE, GMI, DTV), + PIN(PJ7, UARTD, RSVD2, GMI, GMI_ALT), + PIN(PB0, UARTD, RSVD2, GMI, RSVD4), + PIN(PB1, UARTD, RSVD2, GMI, RSVD4), + PIN(PK7, UARTD, RSVD2, GMI, RSVD4), + PIN(PI0, RSVD1, RSVD2, GMI, RSVD4), + PIN(PI1, RSVD1, RSVD2, GMI, RSVD4), + PIN(PI2, SDMMC2, TRACE, GMI, RSVD4), + PIN(PI4, SPI4, TRACE, GMI, DISPLAYA), + PIN(GEN2_I2C_SCL_PT5, I2C2, RSVD2, GMI, RSVD4), + PIN(GEN2_I2C_SDA_PT6, I2C2, RSVD2, GMI, RSVD4), + PIN(SDMMC4_CLK_PCC4, SDMMC4, RSVD2, GMI, RSVD4), + PIN(SDMMC4_CMD_PT7, SDMMC4, RSVD2, GMI, RSVD4), + PIN(SDMMC4_DAT0_PAA0, SDMMC4, SPI3, GMI, RSVD4), + PIN(SDMMC4_DAT1_PAA1, SDMMC4, SPI3, GMI, RSVD4), + PIN(SDMMC4_DAT2_PAA2, SDMMC4, SPI3, GMI, RSVD4), + PIN(SDMMC4_DAT3_PAA3, SDMMC4, SPI3, GMI, RSVD4), + PIN(SDMMC4_DAT4_PAA4, SDMMC4, SPI3, GMI, RSVD4), + PIN(SDMMC4_DAT5_PAA5, SDMMC4, SPI3, RSVD3, RSVD4), + PIN(SDMMC4_DAT6_PAA6, SDMMC4, SPI3, GMI, RSVD4), + PIN(SDMMC4_DAT7_PAA7, SDMMC4, RSVD2, GMI, RSVD4), + PIN_RESERVED, + /* Offset 0x3284 */ + PIN(CAM_MCLK_PCC0, VI, VI_ALT1, VI_ALT3, SDMMC2), + PIN(PCC1, I2S4, RSVD2, RSVD3, SDMMC2), + PIN(PBB0, VGP6, VIMCLK2, SDMMC2, VIMCLK2_ALT), + PIN(CAM_I2C_SCL_PBB1, VGP1, I2C3, RSVD3, SDMMC2), + PIN(CAM_I2C_SDA_PBB2, VGP2, I2C3, RSVD3, SDMMC2), + PIN(PBB3, VGP3, DISPLAYA, DISPLAYB, SDMMC2), + PIN(PBB4, VGP4, DISPLAYA, DISPLAYB, SDMMC2), + PIN(PBB5, VGP5, DISPLAYA, RSVD3, SDMMC2), + PIN(PBB6, I2S4, RSVD2, DISPLAYB, SDMMC2), + PIN(PBB7, I2S4, RSVD2, RSVD3, SDMMC2), + PIN(PCC2, I2S4, RSVD2, SDMMC3, SDMMC2), + PIN(JTAG_RTCK, RTCK, RSVD2, RSVD3, RSVD4), + PIN(PWR_I2C_SCL_PZ6, I2CPWR, RSVD2, RSVD3, RSVD4), + PIN(PWR_I2C_SDA_PZ7, I2CPWR, RSVD2, RSVD3, RSVD4), + PIN(KB_ROW0_PR0, KBC, RSVD2, RSVD3, RSVD4), + PIN(KB_ROW1_PR1, KBC, RSVD2, RSVD3, RSVD4), + PIN(KB_ROW2_PR2, KBC, RSVD2, RSVD3, RSVD4), + PIN(KB_ROW3_PR3, KBC, DISPLAYA, SYS, DISPLAYB), + PIN(KB_ROW4_PR4, KBC, DISPLAYA, RSVD3, DISPLAYB), + PIN(KB_ROW5_PR5, KBC, DISPLAYA, RSVD3, DISPLAYB), + PIN(KB_ROW6_PR6, KBC, DISPLAYA, DISPLAYA_ALT, DISPLAYB), + PIN(KB_ROW7_PR7, KBC, RSVD2, CLDVFS, UARTA), + PIN(KB_ROW8_PS0, KBC, RSVD2, CLDVFS, UARTA), + PIN(KB_ROW9_PS1, KBC, RSVD2, RSVD3, UARTA), + PIN(KB_ROW10_PS2, KBC, RSVD2, RSVD3, UARTA), + PIN(KB_ROW11_PS3, KBC, RSVD2, RSVD3, IRDA), + PIN(KB_ROW12_PS4, KBC, RSVD2, RSVD3, IRDA), + PIN(KB_ROW13_PS5, KBC, RSVD2, SPI2, RSVD4), + PIN(KB_ROW14_PS6, KBC, RSVD2, SPI2, RSVD4), + PIN(KB_ROW15_PS7, KBC, SOC, RSVD3, RSVD4), + PIN(KB_COL0_PQ0, KBC, RSVD2, SPI2, RSVD4), + PIN(KB_COL1_PQ1, KBC, RSVD2, SPI2, RSVD4), + PIN(KB_COL2_PQ2, KBC, RSVD2, SPI2, RSVD4), + PIN(KB_COL3_PQ3, KBC, DISPLAYA, PWM2, UARTA), + PIN(KB_COL4_PQ4, KBC, OWR, SDMMC3, UARTA), + PIN(KB_COL5_PQ5, KBC, RSVD2, SDMMC3, RSVD4), + PIN(KB_COL6_PQ6, KBC, RSVD2, SPI2, UARTD), + PIN(KB_COL7_PQ7, KBC, RSVD2, SPI2, UARTD), + PIN(CLK_32K_OUT_PA0, BLINK, SOC, RSVD3, RSVD4), + PIN_RESERVED, + /* Offset 0x3324 */ + PIN(CORE_PWR_REQ, PWRON, RSVD2, RSVD3, RSVD4), + PIN(CPU_PWR_REQ, CPU, RSVD2, RSVD3, RSVD4), + PIN(PWR_INT_N, PMI, RSVD2, RSVD3, RSVD4), + PIN(CLK_32K_IN, CLK, RSVD2, RSVD3, RSVD4), + PIN(OWR, OWR, RSVD2, RSVD3, RSVD4), + PIN(DAP1_FS_PN0, I2S0, HDA, GMI, RSVD4), + PIN(DAP1_DIN_PN1, I2S0, HDA, GMI, RSVD4), + PIN(DAP1_DOUT_PN2, I2S0, HDA, GMI, SATA), + PIN(DAP1_SCLK_PN3, I2S0, HDA, GMI, RSVD4), + PIN(DAP_MCLK1_REQ_PEE2, DAP, DAP1, SATA, RSVD4), + PIN(DAP_MCLK1_PW4, EXTPERIPH1, DAP2, RSVD3, RSVD4), + PIN(SPDIF_IN_PK6, SPDIF, RSVD2, RSVD3, I2C3), + PIN(SPDIF_OUT_PK5, SPDIF, RSVD2, RSVD3, I2C3), + PIN(DAP2_FS_PA2, I2S1, HDA, GMI, RSVD4), + PIN(DAP2_DIN_PA4, I2S1, HDA, GMI, RSVD4), + PIN(DAP2_DOUT_PA5, I2S1, HDA, GMI, RSVD4), + PIN(DAP2_SCLK_PA3, I2S1, HDA, GMI, RSVD4), + PIN(DVFS_PWM_PX0, SPI6, CLDVFS, GMI, RSVD4), + PIN(GPIO_X1_AUD_PX1, SPI6, RSVD2, GMI, RSVD4), + PIN(GPIO_X3_AUD_PX3, SPI6, SPI1, GMI, RSVD4), + PIN(DVFS_CLK_PX2, SPI6, CLDVFS, GMI, RSVD4), + PIN(GPIO_X4_AUD_PX4, GMI, SPI1, SPI2, DAP2), + PIN(GPIO_X5_AUD_PX5, GMI, SPI1, SPI2, RSVD4), + PIN(GPIO_X6_AUD_PX6, SPI6, SPI1, SPI2, GMI), + PIN(GPIO_X7_AUD_PX7, RSVD1, SPI1, SPI2, RSVD4), + PIN_RESERVED, + PIN_RESERVED, + /* Offset 0x3390 */ + PIN(SDMMC3_CLK_PA6, SDMMC3, RSVD2, RSVD3, SPI3), + PIN(SDMMC3_CMD_PA7, SDMMC3, PWM3, UARTA, SPI3), + PIN(SDMMC3_DAT0_PB7, SDMMC3, RSVD2, RSVD3, SPI3), + PIN(SDMMC3_DAT1_PB6, SDMMC3, PWM2, UARTA, SPI3), + PIN(SDMMC3_DAT2_PB5, SDMMC3, PWM1, DISPLAYA, SPI3), + PIN(SDMMC3_DAT3_PB4, SDMMC3, PWM0, DISPLAYB, SPI3), + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + /* Offset 0x33bc */ + PIN(PEX_L0_RST_N_PDD1, PE0, RSVD2, RSVD3, RSVD4), + PIN(PEX_L0_CLKREQ_N_PDD2, PE0, RSVD2, RSVD3, RSVD4), + PIN(PEX_WAKE_N_PDD3, PE, RSVD2, RSVD3, RSVD4), + PIN_RESERVED, + /* Offset 0x33cc */ + PIN(PEX_L1_RST_N_PDD5, PE1, RSVD2, RSVD3, RSVD4), + PIN(PEX_L1_CLKREQ_N_PDD6, PE1, RSVD2, RSVD3, RSVD4), + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + /* Offset 0x33e0 */ + PIN(HDMI_CEC_PEE3, CEC, RSVD2, RSVD3, RSVD4), + PIN(SDMMC1_WP_N_PV3, SDMMC1, CLK12, SPI4, UARTA), + PIN(SDMMC3_CD_N_PV2, SDMMC3, OWR, RSVD3, RSVD4), + PIN(GPIO_W2_AUD_PW2, SPI6, RSVD2, SPI2, I2C1), + PIN(GPIO_W3_AUD_PW3, SPI6, SPI1, SPI2, I2C1), + PIN(USB_VBUS_EN0_PN4, USB, RSVD2, RSVD3, RSVD4), + PIN(USB_VBUS_EN1_PN5, USB, RSVD2, RSVD3, RSVD4), + PIN(SDMMC3_CLK_LB_IN_PEE5, SDMMC3, RSVD2, RSVD3, RSVD4), + PIN(SDMMC3_CLK_LB_OUT_PEE4, SDMMC3, RSVD2, RSVD3, RSVD4), + PIN(GMI_CLK_LB, SDMMC2, RSVD2, GMI, RSVD4), + PIN(RESET_OUT_N, RSVD1, RSVD2, RSVD3, RESET_OUT_N), + PIN(KB_ROW16_PT0, KBC, RSVD2, RSVD3, UARTC), + PIN(KB_ROW17_PT1, KBC, RSVD2, RSVD3, UARTC), + PIN(USB_VBUS_EN2_PFF1, USB, RSVD2, RSVD3, RSVD4), + PIN(PFF2, SATA, RSVD2, RSVD3, RSVD4), + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + PIN_RESERVED, + /* Offset 0x3430 */ + PIN(DP_HPD_PFF0, DP, RSVD2, RSVD3, RSVD4), +}; +const struct pmux_pingrp_desc *tegra_soc_pingroups = tegra124_pingroups; diff --git a/arch/arm/mach-tegra/tegra124/xusb-padctl.c b/arch/arm/mach-tegra/tegra124/xusb-padctl.c new file mode 100644 index 0000000..43af883 --- /dev/null +++ b/arch/arm/mach-tegra/tegra124/xusb-padctl.c @@ -0,0 +1,716 @@ +/* + * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#define pr_fmt(fmt) "tegra-xusb-padctl: " fmt + +#include <common.h> +#include <errno.h> +#include <fdtdec.h> +#include <malloc.h> + +#include <asm/io.h> + +#include <asm/arch/clock.h> +#include <asm/arch-tegra/xusb-padctl.h> + +#include <dt-bindings/pinctrl/pinctrl-tegra-xusb.h> + +#define XUSB_PADCTL_ELPG_PROGRAM 0x01c +#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN (1 << 26) +#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY (1 << 25) +#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN (1 << 24) + +#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1 0x040 +#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL0_LOCKDET (1 << 19) +#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_REFCLK_SEL_MASK (0xf << 12) +#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST (1 << 1) + +#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2 0x044 +#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_REFCLKBUF_EN (1 << 6) +#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_EN (1 << 5) +#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_SEL (1 << 4) + +#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1 0x138 +#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_LOCKDET (1 << 27) +#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE (1 << 24) +#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD (1 << 3) +#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST (1 << 1) +#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ (1 << 0) + +#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1 0x148 +#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD (1 << 1) +#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ (1 << 0) + +enum tegra124_function { + TEGRA124_FUNC_SNPS, + TEGRA124_FUNC_XUSB, + TEGRA124_FUNC_UART, + TEGRA124_FUNC_PCIE, + TEGRA124_FUNC_USB3, + TEGRA124_FUNC_SATA, + TEGRA124_FUNC_RSVD, +}; + +static const char *const tegra124_functions[] = { + "snps", + "xusb", + "uart", + "pcie", + "usb3", + "sata", + "rsvd", +}; + +static const unsigned int tegra124_otg_functions[] = { + TEGRA124_FUNC_SNPS, + TEGRA124_FUNC_XUSB, + TEGRA124_FUNC_UART, + TEGRA124_FUNC_RSVD, +}; + +static const unsigned int tegra124_usb_functions[] = { + TEGRA124_FUNC_SNPS, + TEGRA124_FUNC_XUSB, +}; + +static const unsigned int tegra124_pci_functions[] = { + TEGRA124_FUNC_PCIE, + TEGRA124_FUNC_USB3, + TEGRA124_FUNC_SATA, + TEGRA124_FUNC_RSVD, +}; + +struct tegra_xusb_padctl_lane { + const char *name; + + unsigned int offset; + unsigned int shift; + unsigned int mask; + unsigned int iddq; + + const unsigned int *funcs; + unsigned int num_funcs; +}; + +#define TEGRA124_LANE(_name, _offset, _shift, _mask, _iddq, _funcs) \ + { \ + .name = _name, \ + .offset = _offset, \ + .shift = _shift, \ + .mask = _mask, \ + .iddq = _iddq, \ + .num_funcs = ARRAY_SIZE(tegra124_##_funcs##_functions), \ + .funcs = tegra124_##_funcs##_functions, \ + } + +static const struct tegra_xusb_padctl_lane tegra124_lanes[] = { + TEGRA124_LANE("otg-0", 0x004, 0, 0x3, 0, otg), + TEGRA124_LANE("otg-1", 0x004, 2, 0x3, 0, otg), + TEGRA124_LANE("otg-2", 0x004, 4, 0x3, 0, otg), + TEGRA124_LANE("ulpi-0", 0x004, 12, 0x1, 0, usb), + TEGRA124_LANE("hsic-0", 0x004, 14, 0x1, 0, usb), + TEGRA124_LANE("hsic-1", 0x004, 15, 0x1, 0, usb), + TEGRA124_LANE("pcie-0", 0x134, 16, 0x3, 1, pci), + TEGRA124_LANE("pcie-1", 0x134, 18, 0x3, 2, pci), + TEGRA124_LANE("pcie-2", 0x134, 20, 0x3, 3, pci), + TEGRA124_LANE("pcie-3", 0x134, 22, 0x3, 4, pci), + TEGRA124_LANE("pcie-4", 0x134, 24, 0x3, 5, pci), + TEGRA124_LANE("sata-0", 0x134, 26, 0x3, 6, pci), +}; + +struct tegra_xusb_phy_ops { + int (*prepare)(struct tegra_xusb_phy *phy); + int (*enable)(struct tegra_xusb_phy *phy); + int (*disable)(struct tegra_xusb_phy *phy); + int (*unprepare)(struct tegra_xusb_phy *phy); +}; + +struct tegra_xusb_phy { + const struct tegra_xusb_phy_ops *ops; + + struct tegra_xusb_padctl *padctl; +}; + +struct tegra_xusb_padctl_pin { + const struct tegra_xusb_padctl_lane *lane; + + unsigned int func; + int iddq; +}; + +#define MAX_GROUPS 3 +#define MAX_PINS 6 + +struct tegra_xusb_padctl_group { + const char *name; + + const char *pins[MAX_PINS]; + unsigned int num_pins; + + const char *func; + int iddq; +}; + +struct tegra_xusb_padctl_config { + const char *name; + + struct tegra_xusb_padctl_group groups[MAX_GROUPS]; + unsigned int num_groups; +}; + +struct tegra_xusb_padctl { + struct fdt_resource regs; + + unsigned int enable; + + struct tegra_xusb_phy phys[2]; + + const struct tegra_xusb_padctl_lane *lanes; + unsigned int num_lanes; + + const char *const *functions; + unsigned int num_functions; + + struct tegra_xusb_padctl_config config; +}; + +static inline u32 padctl_readl(struct tegra_xusb_padctl *padctl, + unsigned long offset) +{ + return readl(padctl->regs.start + offset); +} + +static inline void padctl_writel(struct tegra_xusb_padctl *padctl, + u32 value, unsigned long offset) +{ + writel(value, padctl->regs.start + offset); +} + +static int tegra_xusb_padctl_enable(struct tegra_xusb_padctl *padctl) +{ + u32 value; + + if (padctl->enable++ > 0) + return 0; + + value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM); + value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN; + padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM); + + udelay(100); + + value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM); + value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY; + padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM); + + udelay(100); + + value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM); + value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN; + padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM); + + return 0; +} + +static int tegra_xusb_padctl_disable(struct tegra_xusb_padctl *padctl) +{ + u32 value; + + if (padctl->enable == 0) { + error("tegra-xusb-padctl: unbalanced enable/disable"); + return 0; + } + + if (--padctl->enable > 0) + return 0; + + value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM); + value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN; + padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM); + + udelay(100); + + value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM); + value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY; + padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM); + + udelay(100); + + value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM); + value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN; + padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM); + + return 0; +} + +static int phy_prepare(struct tegra_xusb_phy *phy) +{ + return tegra_xusb_padctl_enable(phy->padctl); +} + +static int phy_unprepare(struct tegra_xusb_phy *phy) +{ + return tegra_xusb_padctl_disable(phy->padctl); +} + +static int pcie_phy_enable(struct tegra_xusb_phy *phy) +{ + struct tegra_xusb_padctl *padctl = phy->padctl; + int err = -ETIMEDOUT; + unsigned long start; + u32 value; + + value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1); + value &= ~XUSB_PADCTL_IOPHY_PLL_P0_CTL1_REFCLK_SEL_MASK; + padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1); + + value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL2); + value |= XUSB_PADCTL_IOPHY_PLL_P0_CTL2_REFCLKBUF_EN | + XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_EN | + XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_SEL; + padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL2); + + value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1); + value |= XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST; + padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1); + + start = get_timer(0); + + while (get_timer(start) < 50) { + value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1); + if (value & XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL0_LOCKDET) { + err = 0; + break; + } + } + + return err; +} + +static int pcie_phy_disable(struct tegra_xusb_phy *phy) +{ + struct tegra_xusb_padctl *padctl = phy->padctl; + u32 value; + + value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1); + value &= ~XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST; + padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1); + + return 0; +} + +static int sata_phy_enable(struct tegra_xusb_phy *phy) +{ + struct tegra_xusb_padctl *padctl = phy->padctl; + int err = -ETIMEDOUT; + unsigned long start; + u32 value; + + value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1); + value &= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD; + value &= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ; + padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1); + + value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1); + value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD; + value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ; + padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1); + + value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1); + value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE; + padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1); + + value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1); + value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST; + padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1); + + start = get_timer(0); + + while (get_timer(start) < 50) { + value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1); + if (value & XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_LOCKDET) { + err = 0; + break; + } + } + + return err; +} + +static int sata_phy_disable(struct tegra_xusb_phy *phy) +{ + struct tegra_xusb_padctl *padctl = phy->padctl; + u32 value; + + value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1); + value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST; + padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1); + + value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1); + value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE; + padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1); + + value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1); + value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD; + value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ; + padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1); + + value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1); + value |= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD; + value |= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ; + padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1); + + return 0; +} + +static const struct tegra_xusb_phy_ops pcie_phy_ops = { + .prepare = phy_prepare, + .enable = pcie_phy_enable, + .disable = pcie_phy_disable, + .unprepare = phy_unprepare, +}; + +static const struct tegra_xusb_phy_ops sata_phy_ops = { + .prepare = phy_prepare, + .enable = sata_phy_enable, + .disable = sata_phy_disable, + .unprepare = phy_unprepare, +}; + +static struct tegra_xusb_padctl *padctl = &(struct tegra_xusb_padctl) { + .phys = { + [0] = { + .ops = &pcie_phy_ops, + }, + [1] = { + .ops = &sata_phy_ops, + }, + }, +}; + +static const struct tegra_xusb_padctl_lane * +tegra_xusb_padctl_find_lane(struct tegra_xusb_padctl *padctl, const char *name) +{ + unsigned int i; + + for (i = 0; i < padctl->num_lanes; i++) + if (strcmp(name, padctl->lanes[i].name) == 0) + return &padctl->lanes[i]; + + return NULL; +} + +static int +tegra_xusb_padctl_group_parse_dt(struct tegra_xusb_padctl *padctl, + struct tegra_xusb_padctl_group *group, + const void *fdt, int node) +{ + unsigned int i; + int len, err; + + group->name = fdt_get_name(fdt, node, &len); + + len = fdt_count_strings(fdt, node, "nvidia,lanes"); + if (len < 0) { + error("tegra-xusb-padctl: failed to parse \"nvidia,lanes\" property"); + return -EINVAL; + } + + group->num_pins = len; + + for (i = 0; i < group->num_pins; i++) { + err = fdt_get_string_index(fdt, node, "nvidia,lanes", i, + &group->pins[i]); + if (err < 0) { + error("tegra-xusb-padctl: failed to read string from \"nvidia,lanes\" property"); + return -EINVAL; + } + } + + group->num_pins = len; + + err = fdt_get_string(fdt, node, "nvidia,function", &group->func); + if (err < 0) { + error("tegra-xusb-padctl: failed to parse \"nvidia,func\" property"); + return -EINVAL; + } + + group->iddq = fdtdec_get_int(fdt, node, "nvidia,iddq", -1); + + return 0; +} + +static int tegra_xusb_padctl_find_function(struct tegra_xusb_padctl *padctl, + const char *name) +{ + unsigned int i; + + for (i = 0; i < padctl->num_functions; i++) + if (strcmp(name, padctl->functions[i]) == 0) + return i; + + return -ENOENT; +} + +static int +tegra_xusb_padctl_lane_find_function(struct tegra_xusb_padctl *padctl, + const struct tegra_xusb_padctl_lane *lane, + const char *name) +{ + unsigned int i; + int func; + + func = tegra_xusb_padctl_find_function(padctl, name); + if (func < 0) + return func; + + for (i = 0; i < lane->num_funcs; i++) + if (lane->funcs[i] == func) + return i; + + return -ENOENT; +} + +static int +tegra_xusb_padctl_group_apply(struct tegra_xusb_padctl *padctl, + const struct tegra_xusb_padctl_group *group) +{ + unsigned int i; + + for (i = 0; i < group->num_pins; i++) { + const struct tegra_xusb_padctl_lane *lane; + unsigned int func; + u32 value; + + lane = tegra_xusb_padctl_find_lane(padctl, group->pins[i]); + if (!lane) { + error("tegra-xusb-padctl: no lane for pin %s", + group->pins[i]); + continue; + } + + func = tegra_xusb_padctl_lane_find_function(padctl, lane, + group->func); + if (func < 0) { + error("tegra-xusb-padctl: function %s invalid for lane %s: %d", + group->func, lane->name, func); + continue; + } + + value = padctl_readl(padctl, lane->offset); + + /* set pin function */ + value &= ~(lane->mask << lane->shift); + value |= func << lane->shift; + + /* + * Set IDDQ if supported on the lane and specified in the + * configuration. + */ + if (lane->iddq > 0 && group->iddq >= 0) { + if (group->iddq != 0) + value &= ~(1 << lane->iddq); + else + value |= 1 << lane->iddq; + } + + padctl_writel(padctl, value, lane->offset); + } + + return 0; +} + +static int +tegra_xusb_padctl_config_apply(struct tegra_xusb_padctl *padctl, + struct tegra_xusb_padctl_config *config) +{ + unsigned int i; + + for (i = 0; i < config->num_groups; i++) { + const struct tegra_xusb_padctl_group *group; + int err; + + group = &config->groups[i]; + + err = tegra_xusb_padctl_group_apply(padctl, group); + if (err < 0) { + error("tegra-xusb-padctl: failed to apply group %s: %d", + group->name, err); + continue; + } + } + + return 0; +} + +static int +tegra_xusb_padctl_config_parse_dt(struct tegra_xusb_padctl *padctl, + struct tegra_xusb_padctl_config *config, + const void *fdt, int node) +{ + int subnode; + + config->name = fdt_get_name(fdt, node, NULL); + + fdt_for_each_subnode(fdt, subnode, node) { + struct tegra_xusb_padctl_group *group; + int err; + + group = &config->groups[config->num_groups]; + + err = tegra_xusb_padctl_group_parse_dt(padctl, group, fdt, + subnode); + if (err < 0) { + error("tegra-xusb-padctl: failed to parse group %s", + group->name); + return err; + } + + config->num_groups++; + } + + return 0; +} + +static int tegra_xusb_padctl_parse_dt(struct tegra_xusb_padctl *padctl, + const void *fdt, int node) +{ + int subnode, err; + + err = fdt_get_resource(fdt, node, "reg", 0, &padctl->regs); + if (err < 0) { + error("tegra-xusb-padctl: registers not found"); + return err; + } + + fdt_for_each_subnode(fdt, subnode, node) { + struct tegra_xusb_padctl_config *config = &padctl->config; + + err = tegra_xusb_padctl_config_parse_dt(padctl, config, fdt, + subnode); + if (err < 0) { + error("tegra-xusb-padctl: failed to parse entry %s: %d", + config->name, err); + continue; + } + } + + return 0; +} + +static int process_nodes(const void *fdt, int nodes[], unsigned int count) +{ + unsigned int i; + + for (i = 0; i < count; i++) { + enum fdt_compat_id id; + int err; + + if (!fdtdec_get_is_enabled(fdt, nodes[i])) + continue; + + id = fdtdec_lookup(fdt, nodes[i]); + switch (id) { + case COMPAT_NVIDIA_TEGRA124_XUSB_PADCTL: + break; + + default: + error("tegra-xusb-padctl: unsupported compatible: %s", + fdtdec_get_compatible(id)); + continue; + } + + padctl->num_lanes = ARRAY_SIZE(tegra124_lanes); + padctl->lanes = tegra124_lanes; + + padctl->num_functions = ARRAY_SIZE(tegra124_functions); + padctl->functions = tegra124_functions; + + err = tegra_xusb_padctl_parse_dt(padctl, fdt, nodes[i]); + if (err < 0) { + error("tegra-xusb-padctl: failed to parse DT: %d", + err); + continue; + } + + /* deassert XUSB padctl reset */ + reset_set_enable(PERIPH_ID_XUSB_PADCTL, 0); + + err = tegra_xusb_padctl_config_apply(padctl, &padctl->config); + if (err < 0) { + error("tegra-xusb-padctl: failed to apply pinmux: %d", + err); + continue; + } + + /* only a single instance is supported */ + break; + } + + return 0; +} + +struct tegra_xusb_phy *tegra_xusb_phy_get(unsigned int type) +{ + struct tegra_xusb_phy *phy = NULL; + + switch (type) { + case TEGRA_XUSB_PADCTL_PCIE: + phy = &padctl->phys[0]; + phy->padctl = padctl; + break; + + case TEGRA_XUSB_PADCTL_SATA: + phy = &padctl->phys[1]; + phy->padctl = padctl; + break; + } + + return phy; +} + +int tegra_xusb_phy_prepare(struct tegra_xusb_phy *phy) +{ + if (phy && phy->ops && phy->ops->prepare) + return phy->ops->prepare(phy); + + return phy ? -ENOSYS : -EINVAL; +} + +int tegra_xusb_phy_enable(struct tegra_xusb_phy *phy) +{ + if (phy && phy->ops && phy->ops->enable) + return phy->ops->enable(phy); + + return phy ? -ENOSYS : -EINVAL; +} + +int tegra_xusb_phy_disable(struct tegra_xusb_phy *phy) +{ + if (phy && phy->ops && phy->ops->disable) + return phy->ops->disable(phy); + + return phy ? -ENOSYS : -EINVAL; +} + +int tegra_xusb_phy_unprepare(struct tegra_xusb_phy *phy) +{ + if (phy && phy->ops && phy->ops->unprepare) + return phy->ops->unprepare(phy); + + return phy ? -ENOSYS : -EINVAL; +} + +void tegra_xusb_padctl_init(const void *fdt) +{ + int count, nodes[1]; + + count = fdtdec_find_aliases_for_id(fdt, "padctl", + COMPAT_NVIDIA_TEGRA124_XUSB_PADCTL, + nodes, ARRAY_SIZE(nodes)); + if (process_nodes(fdt, nodes, count)) + return; +} |