diff options
Diffstat (limited to 'arch/arm/cpu/arm926ejs/mx25/generic.c')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/mx25/generic.c | 66 |
1 files changed, 42 insertions, 24 deletions
diff --git a/arch/arm/cpu/arm926ejs/mx25/generic.c b/arch/arm/cpu/arm926ejs/mx25/generic.c index 90e584ac5..b9914186b 100644 --- a/arch/arm/cpu/arm926ejs/mx25/generic.c +++ b/arch/arm/cpu/arm926ejs/mx25/generic.c @@ -29,11 +29,10 @@ #include <asm/arch/imx-regs.h> #include <asm/arch/imx25-pinmux.h> #include <asm/arch/clock.h> -#ifdef CONFIG_MXC_MMC -#include <asm/arch/mxcmmc.h> -#endif #ifdef CONFIG_FSL_ESDHC +#include <fsl_esdhc.h> + DECLARE_GLOBAL_DATA_PTR; #endif @@ -48,7 +47,7 @@ static unsigned int imx_decode_pll(unsigned int pll, unsigned int f_ref) { unsigned int mfi = (pll >> CCM_PLL_MFI_SHIFT) & CCM_PLL_MFI_MASK; - unsigned int mfn = (pll >> CCM_PLL_MFN_SHIFT) + int mfn = (pll >> CCM_PLL_MFN_SHIFT) & CCM_PLL_MFN_MASK; unsigned int mfd = (pll >> CCM_PLL_MFD_SHIFT) & CCM_PLL_MFD_MASK; @@ -56,9 +55,12 @@ static unsigned int imx_decode_pll(unsigned int pll, unsigned int f_ref) & CCM_PLL_PD_MASK; mfi = mfi <= 5 ? 5 : mfi; + mfn = mfn >= 512 ? mfn - 1024 : mfn; + mfd += 1; + pd += 1; - return lldiv(2 * (u64) f_ref * (mfi * (mfd + 1) + mfn), - (mfd + 1) * (pd + 1)); + return lldiv(2 * (u64) f_ref * (mfi * mfd + mfn), + mfd * pd); } static ulong imx_get_mpllclk(void) @@ -69,7 +71,7 @@ static ulong imx_get_mpllclk(void) return imx_decode_pll(readl(&ccm->mpctl), fref); } -ulong imx_get_armclk(void) +static ulong imx_get_armclk(void) { struct ccm_regs *ccm = (struct ccm_regs *)IMX_CCM_BASE; ulong cctl = readl(&ccm->cctl); @@ -77,15 +79,15 @@ ulong imx_get_armclk(void) ulong div; if (cctl & CCM_CCTL_ARM_SRC) - fref = lldiv((fref * 3), 4); + fref = lldiv((u64) fref * 3, 4); div = ((cctl >> CCM_CCTL_ARM_DIV_SHIFT) & CCM_CCTL_ARM_DIV_MASK) + 1; - return lldiv(fref, div); + return fref / div; } -ulong imx_get_ahbclk(void) +static ulong imx_get_ahbclk(void) { struct ccm_regs *ccm = (struct ccm_regs *)IMX_CCM_BASE; ulong cctl = readl(&ccm->cctl); @@ -95,10 +97,15 @@ ulong imx_get_ahbclk(void) div = ((cctl >> CCM_CCTL_AHB_DIV_SHIFT) & CCM_CCTL_AHB_DIV_MASK) + 1; - return lldiv(fref, div); + return fref / div; +} + +static ulong imx_get_ipgclk(void) +{ + return imx_get_ahbclk() / 2; } -ulong imx_get_perclk(int clk) +static ulong imx_get_perclk(int clk) { struct ccm_regs *ccm = (struct ccm_regs *)IMX_CCM_BASE; ulong fref = imx_get_ahbclk(); @@ -107,7 +114,7 @@ ulong imx_get_perclk(int clk) div = readl(&ccm->pcdr[CCM_PERCLK_REG(clk)]); div = ((div >> CCM_PERCLK_SHIFT(clk)) & CCM_PERCLK_MASK) + 1; - return lldiv(fref, div); + return fref / div; } unsigned int mxc_get_clock(enum mxc_clock clk) @@ -117,8 +124,12 @@ unsigned int mxc_get_clock(enum mxc_clock clk) switch (clk) { case MXC_ARM_CLK: return imx_get_armclk(); - case MXC_FEC_CLK: + case MXC_AHB_CLK: return imx_get_ahbclk(); + case MXC_IPG_CLK: + case MXC_CSPI_CLK: + case MXC_FEC_CLK: + return imx_get_ipgclk(); default: return imx_get_perclk(clk); } @@ -140,6 +151,9 @@ u32 get_cpu_rev(void) case 0x01: system_rev |= CHIP_REV_1_1; break; + case 0x02: + system_rev |= CHIP_REV_1_2; + break; default: system_rev |= 0x8000; break; @@ -194,9 +208,13 @@ void enable_caches(void) #endif } +#if defined(CONFIG_FEC_MXC) +/* + * Initializes on-chip ethernet controllers. + * to override, implement board_eth_init() + */ int cpu_eth_init(bd_t *bis) { -#if defined(CONFIG_FEC_MXC) struct ccm_regs *ccm = (struct ccm_regs *)IMX_CCM_BASE; ulong val; @@ -204,31 +222,31 @@ int cpu_eth_init(bd_t *bis) val |= (1 << 23); writel(val, &ccm->cgr0); return fecmxc_initialize(bis); -#else - return 0; -#endif } +#endif int get_clocks(void) { #ifdef CONFIG_FSL_ESDHC - gd->sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK); +#if CONFIG_SYS_FSL_ESDHC_ADDR == IMX_MMC_SDHC2_BASE + gd->sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); +#else + gd->sdhc_clk = mxc_get_clock(MXC_ESDHC1_CLK); +#endif #endif return 0; } +#ifdef CONFIG_FSL_ESDHC /* * Initializes on-chip MMC controllers. * to override, implement board_mmc_init() */ int cpu_mmc_init(bd_t *bis) { -#ifdef CONFIG_MXC_MMC - return mxc_mmc_init(bis); -#else - return 0; -#endif + return fsl_esdhc_mmc_init(bis); } +#endif #ifdef CONFIG_MXC_UART void mx25_uart1_init_pins(void) |