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authorBenoît Thébaudeau <benoit.thebaudeau@advansee.com>2012-09-27 10:22:22 +0000
committerTom Rini <trini@ti.com>2012-10-15 11:54:11 -0700
commit649dc8abd9be85f6de441c3d4d2b7e0588156a38 (patch)
tree3d88e367f5a8d6d64fcf9c93371aa30d326982c9 /arch
parent414e1660c8e898539411d92fbacdefc3e6bfbdfb (diff)
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mx5 clocks: Add and use CCSR definitions
This fixes config_pll_clk(), which used 0x20 instead of 0x200 for PLL4_CLOCK. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/cpu/armv7/mx5/clock.c34
-rw-r--r--arch/arm/include/asm/arch-mx5/crm_regs.h23
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