diff options
Diffstat (limited to 'arch/arm/mach-mxs/clock-mx28.c')
| -rw-r--r-- | arch/arm/mach-mxs/clock-mx28.c | 50 |
1 files changed, 44 insertions, 6 deletions
diff --git a/arch/arm/mach-mxs/clock-mx28.c b/arch/arm/mach-mxs/clock-mx28.c index fd1c4c5..5dcc59d 100644 --- a/arch/arm/mach-mxs/clock-mx28.c +++ b/arch/arm/mach-mxs/clock-mx28.c @@ -295,11 +295,11 @@ static int name##_set_rate(struct clk *clk, unsigned long rate) \ unsigned long diff, parent_rate, calc_rate; \ int i; \ \ - parent_rate = clk_get_rate(clk->parent); \ div_max = BM_CLKCTRL_##dr##_DIV >> BP_CLKCTRL_##dr##_DIV; \ bm_busy = BM_CLKCTRL_##dr##_BUSY; \ \ if (clk->parent == &ref_xtal_clk) { \ + parent_rate = clk_get_rate(clk->parent); \ div = DIV_ROUND_UP(parent_rate, rate); \ if (clk == &cpu_clk) { \ div_max = BM_CLKCTRL_CPU_DIV_XTAL >> \ @@ -309,6 +309,11 @@ static int name##_set_rate(struct clk *clk, unsigned long rate) \ if (div == 0 || div > div_max) \ return -EINVAL; \ } else { \ + /* \ + * hack alert: this block modifies clk->parent, too, \ + * so the base to use it the grand parent. \ + */ \ + parent_rate = clk_get_rate(clk->parent->parent); \ rate >>= PARENT_RATE_SHIFT; \ parent_rate >>= PARENT_RATE_SHIFT; \ diff = parent_rate; \ @@ -609,17 +614,32 @@ static struct clk_lookup lookups[] = { _REGISTER_CLOCK("duart", NULL, uart_clk) _REGISTER_CLOCK("imx28-fec.0", NULL, fec_clk) _REGISTER_CLOCK("imx28-fec.1", NULL, fec_clk) + _REGISTER_CLOCK("mxs-auart.0", NULL, uart_clk) + _REGISTER_CLOCK("mxs-auart.1", NULL, uart_clk) + _REGISTER_CLOCK("mxs-auart.2", NULL, uart_clk) + _REGISTER_CLOCK("mxs-auart.3", NULL, uart_clk) + _REGISTER_CLOCK("mxs-auart.4", NULL, uart_clk) _REGISTER_CLOCK("rtc", NULL, rtc_clk) _REGISTER_CLOCK("pll2", NULL, pll2_clk) - _REGISTER_CLOCK(NULL, "hclk", hbus_clk) - _REGISTER_CLOCK(NULL, "xclk", xbus_clk) - _REGISTER_CLOCK(NULL, "can0", can0_clk) - _REGISTER_CLOCK(NULL, "can1", can1_clk) + _REGISTER_CLOCK("mxs-dma-apbh", NULL, hbus_clk) + _REGISTER_CLOCK("mxs-dma-apbx", NULL, xbus_clk) + _REGISTER_CLOCK("mxs-mmc.0", NULL, ssp0_clk) + _REGISTER_CLOCK("mxs-mmc.1", NULL, ssp1_clk) + _REGISTER_CLOCK("flexcan.0", NULL, can0_clk) + _REGISTER_CLOCK("flexcan.1", NULL, can1_clk) _REGISTER_CLOCK(NULL, "usb0", usb0_clk) _REGISTER_CLOCK(NULL, "usb1", usb1_clk) - _REGISTER_CLOCK(NULL, "pwm", pwm_clk) + _REGISTER_CLOCK("mxs-pwm.0", NULL, pwm_clk) + _REGISTER_CLOCK("mxs-pwm.1", NULL, pwm_clk) + _REGISTER_CLOCK("mxs-pwm.2", NULL, pwm_clk) + _REGISTER_CLOCK("mxs-pwm.3", NULL, pwm_clk) + _REGISTER_CLOCK("mxs-pwm.4", NULL, pwm_clk) + _REGISTER_CLOCK("mxs-pwm.5", NULL, pwm_clk) + _REGISTER_CLOCK("mxs-pwm.6", NULL, pwm_clk) + _REGISTER_CLOCK("mxs-pwm.7", NULL, pwm_clk) _REGISTER_CLOCK(NULL, "lradc", lradc_clk) _REGISTER_CLOCK(NULL, "spdif", spdif_clk) + _REGISTER_CLOCK("imx28-fb", NULL, lcdif_clk) }; static int clk_misc_init(void) @@ -724,6 +744,15 @@ static int clk_misc_init(void) reg |= BM_CLKCTRL_ENET_CLK_OUT_EN; __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_ENET); + /* + * 480 MHz seems too high to be ssp clock source directly, + * so set frac0 to get a 288 MHz ref_io0. + */ + reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_FRAC0); + reg &= ~BM_CLKCTRL_FRAC0_IO0FRAC; + reg |= 30 << BP_CLKCTRL_FRAC0_IO0FRAC; + __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_FRAC0); + return 0; } @@ -731,12 +760,21 @@ int __init mx28_clocks_init(void) { clk_misc_init(); + /* + * source ssp clock from ref_io0 than ref_xtal, + * as ref_xtal only provides 24 MHz as maximum. + */ + clk_set_parent(&ssp0_clk, &ref_io0_clk); + clk_set_parent(&ssp1_clk, &ref_io0_clk); + clk_enable(&cpu_clk); clk_enable(&hbus_clk); clk_enable(&xbus_clk); clk_enable(&emi_clk); clk_enable(&uart_clk); + clk_set_parent(&lcdif_clk, &ref_pix_clk); + clkdev_add_table(lookups, ARRAY_SIZE(lookups)); mxs_timer_init(&clk32k_clk, MX28_INT_TIMER0); |
