diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/mx5/clock.c | 34 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx5/crm_regs.h | 23 |
2 files changed, 46 insertions, 11 deletions
diff --git a/arch/arm/cpu/armv7/mx5/clock.c b/arch/arm/cpu/armv7/mx5/clock.c index 4e10d81..fe0c0d3 100644 --- a/arch/arm/cpu/armv7/mx5/clock.c +++ b/arch/arm/cpu/armv7/mx5/clock.c @@ -36,7 +36,9 @@ enum pll_clocks { PLL1_CLOCK = 0, PLL2_CLOCK, PLL3_CLOCK, +#ifdef CONFIG_MX53 PLL4_CLOCK, +#endif PLL_CLOCKS, }; @@ -323,10 +325,10 @@ static u32 get_lp_apm(void) u32 ret_val = 0; u32 ccsr = readl(&mxc_ccm->ccsr); - if (((ccsr >> 9) & 1) == 0) - ret_val = MXC_HCLK; - else + if (ccsr & MXC_CCM_CCSR_LP_APM) ret_val = MXC_CLK32 * 1024; + else + ret_val = MXC_HCLK; return ret_val; } @@ -593,40 +595,50 @@ static int config_pll_clk(enum pll_clocks index, struct pll_param *pll_param) switch (index) { case PLL1_CLOCK: /* Switch ARM to PLL2 clock */ - writel(ccsr | 0x4, &mxc_ccm->ccsr); + writel(ccsr | MXC_CCM_CCSR_PLL1_SW_CLK_SEL, + &mxc_ccm->ccsr); CHANGE_PLL_SETTINGS(pll, pll_param->pd, pll_param->mfi, pll_param->mfn, pll_param->mfd); /* Switch back */ - writel(ccsr & ~0x4, &mxc_ccm->ccsr); + writel(ccsr & ~MXC_CCM_CCSR_PLL1_SW_CLK_SEL, + &mxc_ccm->ccsr); break; case PLL2_CLOCK: /* Switch to pll2 bypass clock */ - writel(ccsr | 0x2, &mxc_ccm->ccsr); + writel(ccsr | MXC_CCM_CCSR_PLL2_SW_CLK_SEL, + &mxc_ccm->ccsr); CHANGE_PLL_SETTINGS(pll, pll_param->pd, pll_param->mfi, pll_param->mfn, pll_param->mfd); /* Switch back */ - writel(ccsr & ~0x2, &mxc_ccm->ccsr); + writel(ccsr & ~MXC_CCM_CCSR_PLL2_SW_CLK_SEL, + &mxc_ccm->ccsr); break; case PLL3_CLOCK: /* Switch to pll3 bypass clock */ - writel(ccsr | 0x1, &mxc_ccm->ccsr); + writel(ccsr | MXC_CCM_CCSR_PLL3_SW_CLK_SEL, + &mxc_ccm->ccsr); CHANGE_PLL_SETTINGS(pll, pll_param->pd, pll_param->mfi, pll_param->mfn, pll_param->mfd); /* Switch back */ - writel(ccsr & ~0x1, &mxc_ccm->ccsr); + writel(ccsr & ~MXC_CCM_CCSR_PLL3_SW_CLK_SEL, + &mxc_ccm->ccsr); break; +#ifdef CONFIG_MX53 case PLL4_CLOCK: /* Switch to pll4 bypass clock */ - writel(ccsr | 0x20, &mxc_ccm->ccsr); + writel(ccsr | MXC_CCM_CCSR_PLL4_SW_CLK_SEL, + &mxc_ccm->ccsr); CHANGE_PLL_SETTINGS(pll, pll_param->pd, pll_param->mfi, pll_param->mfn, pll_param->mfd); /* Switch back */ - writel(ccsr & ~0x20, &mxc_ccm->ccsr); + writel(ccsr & ~MXC_CCM_CCSR_PLL4_SW_CLK_SEL, + &mxc_ccm->ccsr); break; +#endif default: return -EINVAL; } diff --git a/arch/arm/include/asm/arch-mx5/crm_regs.h b/arch/arm/include/asm/arch-mx5/crm_regs.h index 3b0ed64..56dceb4 100644 --- a/arch/arm/include/asm/arch-mx5/crm_regs.h +++ b/arch/arm/include/asm/arch-mx5/crm_regs.h @@ -82,6 +82,29 @@ struct mxc_ccm_reg { u32 cmeor; }; +/* Define the bits in register CCSR */ +#if defined(CONFIG_MX51) +#define MXC_CCM_CCSR_LP_APM (0x1 << 9) +#elif defined(CONFIG_MX53) +#define MXC_CCM_CCSR_LP_APM (0x1 << 10) +#define MXC_CCM_CCSR_PLL4_SW_CLK_SEL (0x1 << 9) +#endif +#define MXC_CCM_CCSR_STEP_SEL_OFFSET 7 +#define MXC_CCM_CCSR_STEP_SEL_MASK (0x3 << 7) +#define MXC_CCM_CCSR_STEP_SEL(v) (((v) & 0x3) << 7) +#define MXC_CCM_CCSR_STEP_SEL_RD(r) (((r) >> 7) & 0x3) +#define MXC_CCM_CCSR_PLL2_DIV_PODF_OFFSET 5 +#define MXC_CCM_CCSR_PLL2_DIV_PODF_MASK (0x3 << 5) +#define MXC_CCM_CCSR_PLL2_DIV_PODF(v) (((v) & 0x3) << 5) +#define MXC_CCM_CCSR_PLL2_DIV_PODF_RD(r) (((r) >> 5) & 0x3) +#define MXC_CCM_CCSR_PLL3_DIV_PODF_OFFSET 3 +#define MXC_CCM_CCSR_PLL3_DIV_PODF_MASK (0x3 << 3) +#define MXC_CCM_CCSR_PLL3_DIV_PODF(v) (((v) & 0x3) << 3) +#define MXC_CCM_CCSR_PLL3_DIV_PODF_RD(r) (((r) >> 3) & 0x3) +#define MXC_CCM_CCSR_PLL1_SW_CLK_SEL (0x1 << 2) +#define MXC_CCM_CCSR_PLL2_SW_CLK_SEL (0x1 << 1) +#define MXC_CCM_CCSR_PLL3_SW_CLK_SEL 0x1 + /* Define the bits in register CACRR */ #define MXC_CCM_CACRR_ARM_PODF_OFFSET 0 #define MXC_CCM_CACRR_ARM_PODF_MASK 0x7 |