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Diffstat (limited to 'arch/arm/mach-mx3/clock.c')
-rw-r--r--arch/arm/mach-mx3/clock.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/arch/arm/mach-mx3/clock.c b/arch/arm/mach-mx3/clock.c
index a68fcf981edf..8b14239724c9 100644
--- a/arch/arm/mach-mx3/clock.c
+++ b/arch/arm/mach-mx3/clock.c
@@ -483,7 +483,7 @@ DEFINE_CLOCK(i2c3_clk, 2, MXC_CCM_CGR0, 30, NULL, NULL, &perclk_clk);
DEFINE_CLOCK(mpeg4_clk, 0, MXC_CCM_CGR1, 0, NULL, NULL, &ahb_clk);
DEFINE_CLOCK(mstick1_clk, 0, MXC_CCM_CGR1, 2, mstick1_get_rate, NULL, &usb_pll_clk);
DEFINE_CLOCK(mstick2_clk, 1, MXC_CCM_CGR1, 4, mstick2_get_rate, NULL, &usb_pll_clk);
-DEFINE_CLOCK1(csi_clk, 0, MXC_CCM_CGR1, 6, csi, NULL, &ahb_clk);
+DEFINE_CLOCK1(csi_clk, 0, MXC_CCM_CGR1, 6, csi, NULL, &serial_pll_clk);
DEFINE_CLOCK(rtc_clk, 0, MXC_CCM_CGR1, 8, NULL, NULL, &ipg_clk);
DEFINE_CLOCK(wdog_clk, 0, MXC_CCM_CGR1, 10, NULL, NULL, &ipg_clk);
DEFINE_CLOCK(pwm_clk, 0, MXC_CCM_CGR1, 12, NULL, NULL, &perclk_clk);
@@ -566,13 +566,18 @@ int __init mx31_clocks_init(unsigned long fref)
u32 reg;
int i;
- mxc_set_cpu_type(MXC_CPU_MX31);
-
ckih_rate = fref;
for (i = 0; i < ARRAY_SIZE(lookups); i++)
clkdev_add(&lookups[i]);
+ /* change the csi_clk parent if necessary */
+ reg = __raw_readl(MXC_CCM_CCMR);
+ if (!(reg & MXC_CCM_CCMR_CSCS))
+ if (clk_set_parent(&csi_clk, &usb_pll_clk))
+ pr_err("%s: error changing csi_clk parent\n", __func__);
+
+
/* Turn off all possible clocks */
__raw_writel((3 << 4), MXC_CCM_CGR0);
__raw_writel(0, MXC_CCM_CGR1);
@@ -581,6 +586,12 @@ int __init mx31_clocks_init(unsigned long fref)
MX32, but still required to be set */
MXC_CCM_CGR2);
+ /*
+ * Before turning off usb_pll make sure ipg_per_clk is generated
+ * by ipg_clk and not usb_pll.
+ */
+ __raw_writel(__raw_readl(MXC_CCM_CCMR) | (1 << 24), MXC_CCM_CCMR);
+
usb_pll_disable(&usb_pll_clk);
pr_info("Clock input source is %ld\n", clk_get_rate(&ckih_clk));