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authorWolfgang Denk <wd@denx.de>2012-03-30 18:09:08 +0200
committerWolfgang Denk <wd@denx.de>2012-03-30 18:09:08 +0200
commitbc6f6c87b685bcdcd5bef522982d15209b6b9601 (patch)
treee5f924a962f002a1015e157a54450dfa9b953e9e /arch/arm/cpu/arm926ejs/mx28/clock.c
parentf2ea62474b4da9fc41735cbc1fe8491b247e0930 (diff)
parent4a0764858b0bdcb3508f01b96e3fa32b16cdb30f (diff)
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Merge branch 'master' of git://git.denx.de/u-boot-arm
* 'master' of git://git.denx.de/u-boot-arm: (146 commits) arm: Use common .lds file where possible arm: add a common .lds link script arm: Remove unneeded setting of LDCSRIPT Define CPUDIR for the .lds link script arm: Remove zipitz2 link script Allow arch directory to contain .lds without requiring Makefile OMAP: Remove omap1610inn-based boards arch/arm/cpu/armv7/omap-common/clocks-common.c: Fix build warnings board/ti/beagle/beagle.c: Fix build warnings sdrc.c: Fix typo in do_sdrc_init() for SPL tegra: i2c: Add I2C driver tegra: fdt: i2c: Add extra I2C bindings for U-Boot tegra: i2c: Select I2C ordering for Seaboard tegra: i2c: Enable I2C on Seaboard tegra: i2c: Select number of controllers for Tegra2 boards tegra: i2c: Initialise I2C on Nvidia boards tegra: Enhance clock support to handle 16-bit clock divisors fdt: Add function to allow aliases to refer to multiple nodes tegra: Rename NV_PA_PMC_BASE to TEGRA2_PMC_BASE tegra: fdt: Enable FDT support for Ventana tegra: fdt: Enable FDT support for Seaboard tegra: usb: Enable USB on Seaboard tegra: usb: Add common USB defines for tegra2 boards tegra: usb: Add USB support to nvidia boards arm: Check for valid FDT after console is up fdt: Avoid early panic() when there is no FDT present tegra: usb: Add support for Tegra USB peripheral tegra: fdt: Add function to return peripheral/clock ID usb: Add support for txfifo threshold tegra: usb: fdt: Add USB definitions for Tegra2 Seaboard tegra: usb: fdt: Add additional device tree definitions for USB ports tegra: fdt: Add clock bindings for Tegra2 Seaboard tegra: fdt: Add clock bindings tegra: fdt: Add additional USB binding fdt: Add tegra-usb bindings file from linux fdt: Add staging area for device tree binding documentation tegra: fdt: Add device tree file for Tegra2 Seaboard from kernel tegra: fdt: Add Tegra2x device tree file from kernel arm: fdt: Add skeleton device tree file from kernel fdt: Add basic support for decoding GPIO definitions fdt: Add functions to access phandles, arrays and bools fdt: Tidy up a few fdtdec problems fdt: Add tests for fdtdec fdt: Add fdtdec_find_aliases() to deal with alias nodes arm: Tegra2: Fix ELDK42 gcc failure with inline asm stack pointer load net: fec_mxc: allow use with cache enabled net: force PKTALIGN to ARCH_DMA_MINALIGN i.MX28: Enable caches by default i.MX28: Make use of the bounce buffer i.MX28: Do data transfers via DMA in MMC driver MMC: Implement generic bounce buffer i.MX28: Add cache support to MXS NAND driver i.MX28: Add cache support into the APBH DMA driver ARM926EJS: Implement cache operations board/vpac270/onenand.c: Fix build errors nhk8815: fix build errors atmel-boards: add missing atmel_mci.h ARM: highbank: setup env from boot source register ARM: highbank: change env config to use nvram ARM: highbank: add reset support ARM: highbank: Add boot counter support ARM: highbank: change TEXT_BASE to 0x8000 ARM: highbank: fix us_to_tick calculation ARM: highbank: add missing get_tbclk ARM: highbank: fix warning for calxedaxgmac_initialize net: calxedaxgmac: fix build due to missing __aligned definition EXYNOS: Add structure for Exynos4 DMC EXYNOS: SMDK5250: Support all 4 UARTs ARM: fix s3c2410 timer code ARM: davinci: fixes for cam_enc_4xx board omap3_spi: receive transmit mode calimain, enbw_cmc: Fix typo in comments Davinci: ea20: use gpio framework to access gpios OMAP3: mt_ventoux: sets its own mtdparts OMAP3: mt_ventoux: updated timing for FPGA twl4030: fix potential power supply handling issues NAND: TI: fix warnings in omap_gpmc.c cam_enc_4xx: Rename 'images' to 'imgs' arm: Add Prep subcommand support to bootm OMAP3: twister: add support to boot Linux from SPL SPL: call cleanup_before_linux() before booting Linux OMAP3: SPL: do not call I2C init if no I2C is set. Add cache functions to SPL for armv7 devkit8000: Implement and activate direct OS boot omap/spl: change output of spl_parse_image_header omap-common/spl: Add linux boot to SPL devkit8000/spl: init GPMC for dm9000 in SPL omap-common: Add NAND SPL linux booting devkit8000: add config for spl command Add cmd_spl command mx53ard: Initialize return code with error mx53: Make PLL2 to be the parent of UART clock configs: imx: Use CONFIG_SF_DEFAULT_CS mx28evk: Provide default values for SPI bus and chip select USB: ehci-mx6: Add proper IO accessors mx6: Read silicon revision from register i.MX28: Drop __naked function from spl_mem_init mxs_spi: Return proper timeout error i.MX28: Make the stabilization delays shorter pmic_i2c: Return error in case of invalid pmic_i2c_tx_num mx6: Remove duplicate definition of ANATOP_BASE_ADDR mx6: Fix reset cause for Power On Reset case i.MX6: mx6qsabrelite: add MACH_TYPE_MX6Q_SABRELITE i.MX6: mx6q_sabrelite: add CONFIG_REVISION_TAG i.MX28: Enable additional DRAM address bits mx6q: mx6qsabrelite: setup_spi() should be called in board_init to allow use for environment mx31: add "ARM11P power gating" to get_reset_cause mx31pdk: Fix CONFIG_SYS_MEMTEST_END efikamx: Fix CONFIG_SYS_MEMTEST_END mx53smd: Fix CONFIG_SYS_MEMTEST_END mx53evk: Fix CONFIG_SYS_MEMTEST_END mx51evk: Fix CONFIG_SYS_MEMTEST_END i.MX6: mx6qsabrelite: add ext2 support imximage: Remove overwriting of flash_offset IXP: Fix GPIO_INT_ACT_LOW_SET() IXP: Fix NAND build warning on PDNB3 and SCPU IXP: Move PDNB3 and SCPU from Makefile to boards.cfg IXP: Squash warnings in IXP NPE IXP: Fix missing MACH_TYPE_{ACTUX?,PNB3,DVLHOST} IXP: Make IXP buildable with arm-linux- toolchains Examples: Properly append LDFLAGS to LD command SPL: Enable YMODEM support on BeagleBone and AM335x EVM SPL: Add YMODEM over UART load support SPL: Add README.omap3 README: document more SPL config options spl.c: Use __noreturn decorator config.mk: Check for -fstack-usage support config.mk: Make cc-option create a file under include/generated ...
Diffstat (limited to 'arch/arm/cpu/arm926ejs/mx28/clock.c')
-rw-r--r--arch/arm/cpu/arm926ejs/mx28/clock.c74
1 files changed, 29 insertions, 45 deletions
diff --git a/arch/arm/cpu/arm926ejs/mx28/clock.c b/arch/arm/cpu/arm926ejs/mx28/clock.c
index f698506..0439f9c 100644
--- a/arch/arm/cpu/arm926ejs/mx28/clock.c
+++ b/arch/arm/cpu/arm926ejs/mx28/clock.c
@@ -46,8 +46,8 @@ static uint32_t mx28_get_pclk(void)
struct mx28_clkctrl_regs *clkctrl_regs =
(struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
- uint32_t clkctrl, clkseq, clkfrac;
- uint32_t frac, div;
+ uint32_t clkctrl, clkseq, div;
+ uint8_t clkfrac, frac;
clkctrl = readl(&clkctrl_regs->hw_clkctrl_cpu);
@@ -67,8 +67,8 @@ static uint32_t mx28_get_pclk(void)
}
/* REF Path */
- clkfrac = readl(&clkctrl_regs->hw_clkctrl_frac0);
- frac = clkfrac & CLKCTRL_FRAC0_CPUFRAC_MASK;
+ clkfrac = readb(&clkctrl_regs->hw_clkctrl_frac0[CLKCTRL_FRAC0_CPU]);
+ frac = clkfrac & CLKCTRL_FRAC_FRAC_MASK;
div = clkctrl & CLKCTRL_CPU_DIV_CPU_MASK;
return (PLL_FREQ_MHZ * PLL_FREQ_COEF / frac) / div;
}
@@ -96,8 +96,8 @@ static uint32_t mx28_get_emiclk(void)
struct mx28_clkctrl_regs *clkctrl_regs =
(struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
- uint32_t frac, div;
- uint32_t clkctrl, clkseq, clkfrac;
+ uint32_t clkctrl, clkseq, div;
+ uint8_t clkfrac, frac;
clkseq = readl(&clkctrl_regs->hw_clkctrl_clkseq);
clkctrl = readl(&clkctrl_regs->hw_clkctrl_emi);
@@ -109,11 +109,9 @@ static uint32_t mx28_get_emiclk(void)
return XTAL_FREQ_MHZ / div;
}
- clkfrac = readl(&clkctrl_regs->hw_clkctrl_frac0);
-
/* REF Path */
- frac = (clkfrac & CLKCTRL_FRAC0_EMIFRAC_MASK) >>
- CLKCTRL_FRAC0_EMIFRAC_OFFSET;
+ clkfrac = readb(&clkctrl_regs->hw_clkctrl_frac0[CLKCTRL_FRAC0_EMI]);
+ frac = clkfrac & CLKCTRL_FRAC_FRAC_MASK;
div = clkctrl & CLKCTRL_EMI_DIV_EMI_MASK;
return (PLL_FREQ_MHZ * PLL_FREQ_COEF / frac) / div;
}
@@ -123,8 +121,8 @@ static uint32_t mx28_get_gpmiclk(void)
struct mx28_clkctrl_regs *clkctrl_regs =
(struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
- uint32_t frac, div;
- uint32_t clkctrl, clkseq, clkfrac;
+ uint32_t clkctrl, clkseq, div;
+ uint8_t clkfrac, frac;
clkseq = readl(&clkctrl_regs->hw_clkctrl_clkseq);
clkctrl = readl(&clkctrl_regs->hw_clkctrl_gpmi);
@@ -135,11 +133,9 @@ static uint32_t mx28_get_gpmiclk(void)
return XTAL_FREQ_MHZ / div;
}
- clkfrac = readl(&clkctrl_regs->hw_clkctrl_frac1);
-
/* REF Path */
- frac = (clkfrac & CLKCTRL_FRAC1_GPMIFRAC_MASK) >>
- CLKCTRL_FRAC1_GPMIFRAC_OFFSET;
+ clkfrac = readb(&clkctrl_regs->hw_clkctrl_frac1[CLKCTRL_FRAC1_GPMI]);
+ frac = clkfrac & CLKCTRL_FRAC_FRAC_MASK;
div = clkctrl & CLKCTRL_GPMI_DIV_MASK;
return (PLL_FREQ_MHZ * PLL_FREQ_COEF / frac) / div;
}
@@ -152,11 +148,12 @@ void mx28_set_ioclk(enum mxs_ioclock io, uint32_t freq)
struct mx28_clkctrl_regs *clkctrl_regs =
(struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
uint32_t div;
+ int io_reg;
if (freq == 0)
return;
- if (io > MXC_IOCLK1)
+ if ((io < MXC_IOCLK0) || (io > MXC_IOCLK1))
return;
div = (PLL_FREQ_KHZ * PLL_FREQ_COEF) / freq;
@@ -167,23 +164,13 @@ void mx28_set_ioclk(enum mxs_ioclock io, uint32_t freq)
if (div > 35)
div = 35;
- if (io == MXC_IOCLK0) {
- writel(CLKCTRL_FRAC0_CLKGATEIO0,
- &clkctrl_regs->hw_clkctrl_frac0_set);
- clrsetbits_le32(&clkctrl_regs->hw_clkctrl_frac0,
- CLKCTRL_FRAC0_IO0FRAC_MASK,
- div << CLKCTRL_FRAC0_IO0FRAC_OFFSET);
- writel(CLKCTRL_FRAC0_CLKGATEIO0,
- &clkctrl_regs->hw_clkctrl_frac0_clr);
- } else {
- writel(CLKCTRL_FRAC0_CLKGATEIO1,
- &clkctrl_regs->hw_clkctrl_frac0_set);
- clrsetbits_le32(&clkctrl_regs->hw_clkctrl_frac0,
- CLKCTRL_FRAC0_IO1FRAC_MASK,
- div << CLKCTRL_FRAC0_IO1FRAC_OFFSET);
- writel(CLKCTRL_FRAC0_CLKGATEIO1,
- &clkctrl_regs->hw_clkctrl_frac0_clr);
- }
+ io_reg = CLKCTRL_FRAC0_IO0 - io; /* Register order is reversed */
+ writeb(CLKCTRL_FRAC_CLKGATE,
+ &clkctrl_regs->hw_clkctrl_frac0_set[io_reg]);
+ writeb(CLKCTRL_FRAC_CLKGATE | (div & CLKCTRL_FRAC_FRAC_MASK),
+ &clkctrl_regs->hw_clkctrl_frac0[io_reg]);
+ writeb(CLKCTRL_FRAC_CLKGATE,
+ &clkctrl_regs->hw_clkctrl_frac0_clr[io_reg]);
}
/*
@@ -193,19 +180,16 @@ static uint32_t mx28_get_ioclk(enum mxs_ioclock io)
{
struct mx28_clkctrl_regs *clkctrl_regs =
(struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
- uint32_t tmp, ret;
+ uint8_t ret;
+ int io_reg;
- if (io > MXC_IOCLK1)
+ if ((io < MXC_IOCLK0) || (io > MXC_IOCLK1))
return 0;
- tmp = readl(&clkctrl_regs->hw_clkctrl_frac0);
+ io_reg = CLKCTRL_FRAC0_IO0 - io; /* Register order is reversed */
- if (io == MXC_IOCLK0)
- ret = (tmp & CLKCTRL_FRAC0_IO0FRAC_MASK) >>
- CLKCTRL_FRAC0_IO0FRAC_OFFSET;
- else
- ret = (tmp & CLKCTRL_FRAC0_IO1FRAC_MASK) >>
- CLKCTRL_FRAC0_IO1FRAC_OFFSET;
+ ret = readb(&clkctrl_regs->hw_clkctrl_frac0[io_reg]) &
+ CLKCTRL_FRAC_FRAC_MASK;
return (PLL_FREQ_KHZ * PLL_FREQ_COEF) / ret;
}
@@ -223,7 +207,7 @@ void mx28_set_sspclk(enum mxs_sspclock ssp, uint32_t freq, int xtal)
return;
clkreg = (uint32_t)(&clkctrl_regs->hw_clkctrl_ssp0) +
- (ssp * sizeof(struct mx28_register));
+ (ssp * sizeof(struct mx28_register_32));
clrbits_le32(clkreg, CLKCTRL_SSP_CLKGATE);
while (readl(clkreg) & CLKCTRL_SSP_CLKGATE)
@@ -272,7 +256,7 @@ static uint32_t mx28_get_sspclk(enum mxs_sspclock ssp)
return XTAL_FREQ_KHZ;
clkreg = (uint32_t)(&clkctrl_regs->hw_clkctrl_ssp0) +
- (ssp * sizeof(struct mx28_register));
+ (ssp * sizeof(struct mx28_register_32));
tmp = readl(clkreg) & CLKCTRL_SSP_DIV_MASK;