diff options
Diffstat (limited to 'arch/arm/mach-mx3/clock.c')
| -rw-r--r-- | arch/arm/mach-mx3/clock.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/arch/arm/mach-mx3/clock.c b/arch/arm/mach-mx3/clock.c index 9957a11533a..8b14239724c 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); @@ -516,7 +516,7 @@ DEFINE_CLOCK(ipg_clk, 0, NULL, 0, ipg_get_rate, NULL, &ahb_clk); .clk = &c, \ }, -static struct clk_lookup lookups[] __initdata = { +static struct clk_lookup lookups[] = { _REGISTER_CLOCK(NULL, "emi", emi_clk) _REGISTER_CLOCK(NULL, "cspi", cspi1_clk) _REGISTER_CLOCK(NULL, "cspi", cspi2_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)); |