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| author | Fabio Estevam <festevam@gmail.com> | 2011-10-20 16:01:29 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-11-03 22:56:18 +0100 |
| commit | 6d0fb3dbcc4b1ce8437b1e9458ad406636321ef6 (patch) | |
| tree | 8cb192312571038360dbc4b9e6083868e501803e /arch/arm | |
| parent | 1f83d009e4fb086c3ee210f78b2ca601fd2cd0dc (diff) | |
| download | u-boot-imx-6d0fb3dbcc4b1ce8437b1e9458ad406636321ef6.zip u-boot-imx-6d0fb3dbcc4b1ce8437b1e9458ad406636321ef6.tar.gz u-boot-imx-6d0fb3dbcc4b1ce8437b1e9458ad406636321ef6.tar.bz2 | |
mx31: Introduce mx31_set_gpr function
Introduce mx31_set_gpr function for setting the GPR (General Purpose Register) on MX31.
This function can be useful for setting a group of pins into tied to some specific peripherals.
Reuse this function from the linux kernel.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/arm1136/mx31/generic.c | 15 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx31/clock.h | 1 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx31/imx-regs.h | 38 |
3 files changed, 54 insertions, 0 deletions
diff --git a/arch/arm/cpu/arm1136/mx31/generic.c b/arch/arm/cpu/arm1136/mx31/generic.c index 78df7b9..4f27e25 100644 --- a/arch/arm/cpu/arm1136/mx31/generic.c +++ b/arch/arm/cpu/arm1136/mx31/generic.c @@ -27,6 +27,8 @@ #include <asm/io.h> #include <asm/arch/sys_proto.h> +#define IOMUXGPR (IOMUXC_BASE + 0x008) + static u32 mx31_decode_pll(u32 reg, u32 infreq) { u32 mfi = GET_PLL_MFI(reg); @@ -141,6 +143,19 @@ void mx31_set_pad(enum iomux_pins pin, u32 config) } +void mx31_set_gpr(enum iomux_gp_func gp, char en) +{ + u32 l; + + l = readl(IOMUXGPR); + if (en) + l |= gp; + else + l &= ~gp; + + writel(l, IOMUXGPR); +} + void mxc_setup_weimcs(int cs, const struct mxc_weimcs *weimcs) { struct mx31_weim *weim = (struct mx31_weim *) WEIM_BASE; diff --git a/arch/arm/include/asm/arch-mx31/clock.h b/arch/arm/include/asm/arch-mx31/clock.h index 2e3bce2..3e22d9a 100644 --- a/arch/arm/include/asm/arch-mx31/clock.h +++ b/arch/arm/include/asm/arch-mx31/clock.h @@ -37,6 +37,7 @@ unsigned int mxc_get_clock(enum mxc_clock clk); extern u32 imx_get_uartclk(void); extern void mx31_gpio_mux(unsigned long mode); extern void mx31_set_pad(enum iomux_pins pin, u32 config); +extern void mx31_set_gpr(enum iomux_gp_func gp, char en); void mx31_uart1_hw_init(void); void mx31_spi2_hw_init(void); diff --git a/arch/arm/include/asm/arch-mx31/imx-regs.h b/arch/arm/include/asm/arch-mx31/imx-regs.h index 552c821..6ce008d 100644 --- a/arch/arm/include/asm/arch-mx31/imx-regs.h +++ b/arch/arm/include/asm/arch-mx31/imx-regs.h @@ -468,6 +468,44 @@ enum iomux_pins { MX31_PIN_CAPTURE = IOMUX_PIN(7, 327), }; +/* + * various IOMUX general purpose functions + */ +enum iomux_gp_func { + MUX_PGP_FIRI = 1 << 0, + MUX_DDR_MODE = 1 << 1, + MUX_PGP_CSPI_BB = 1 << 2, + MUX_PGP_ATA_1 = 1 << 3, + MUX_PGP_ATA_2 = 1 << 4, + MUX_PGP_ATA_3 = 1 << 5, + MUX_PGP_ATA_4 = 1 << 6, + MUX_PGP_ATA_5 = 1 << 7, + MUX_PGP_ATA_6 = 1 << 8, + MUX_PGP_ATA_7 = 1 << 9, + MUX_PGP_ATA_8 = 1 << 10, + MUX_PGP_UH2 = 1 << 11, + MUX_SDCTL_CSD0_SEL = 1 << 12, + MUX_SDCTL_CSD1_SEL = 1 << 13, + MUX_CSPI1_UART3 = 1 << 14, + MUX_EXTDMAREQ2_MBX_SEL = 1 << 15, + MUX_TAMPER_DETECT_EN = 1 << 16, + MUX_PGP_USB_4WIRE = 1 << 17, + MUX_PGP_USB_COMMON = 1 << 18, + MUX_SDHC_MEMSTICK1 = 1 << 19, + MUX_SDHC_MEMSTICK2 = 1 << 20, + MUX_PGP_SPLL_BYP = 1 << 21, + MUX_PGP_UPLL_BYP = 1 << 22, + MUX_PGP_MSHC1_CLK_SEL = 1 << 23, + MUX_PGP_MSHC2_CLK_SEL = 1 << 24, + MUX_CSPI3_UART5_SEL = 1 << 25, + MUX_PGP_ATA_9 = 1 << 26, + MUX_PGP_USB_SUSPEND = 1 << 27, + MUX_PGP_USB_OTG_LOOPBACK = 1 << 28, + MUX_PGP_USB_HS1_LOOPBACK = 1 << 29, + MUX_PGP_USB_HS2_LOOPBACK = 1 << 30, + MUX_CLKO_DDR_MODE = 1 << 31, +}; + /* Bit definitions for RCSR register in CCM */ #define CCM_RCSR_NF16B (1 << 31) #define CCM_RCSR_NFMS (1 << 30) |