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Diffstat (limited to 'arch/arm/cpu/armv7/omap-common')
-rw-r--r--arch/arm/cpu/armv7/omap-common/clocks-common.c54
1 files changed, 33 insertions, 21 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c b/arch/arm/cpu/armv7/omap-common/clocks-common.c
index 1da90a4d93..4cfe11991a 100644
--- a/arch/arm/cpu/armv7/omap-common/clocks-common.c
+++ b/arch/arm/cpu/armv7/omap-common/clocks-common.c
@@ -251,6 +251,35 @@ void configure_mpu_dpll(void)
debug("MPU DPLL locked\n");
}
+#ifdef CONFIG_USB_EHCI_OMAP
+static void setup_usb_dpll(void)
+{
+ const struct dpll_params *params;
+ u32 sys_clk_khz, sd_div, num, den;
+
+ sys_clk_khz = get_sys_clk_freq() / 1000;
+ /*
+ * USB:
+ * USB dpll is J-type. Need to set DPLL_SD_DIV for jitter correction
+ * DPLL_SD_DIV = CEILING ([DPLL_MULT/(DPLL_DIV+1)]* CLKINP / 250)
+ * - where CLKINP is sys_clk in MHz
+ * Use CLKINP in KHz and adjust the denominator accordingly so
+ * that we have enough accuracy and at the same time no overflow
+ */
+ params = get_usb_dpll_params();
+ num = params->m * sys_clk_khz;
+ den = (params->n + 1) * 250 * 1000;
+ num += den - 1;
+ sd_div = num / den;
+ clrsetbits_le32(&prcm->cm_clksel_dpll_usb,
+ CM_CLKSEL_DPLL_DPLL_SD_DIV_MASK,
+ sd_div << CM_CLKSEL_DPLL_DPLL_SD_DIV_SHIFT);
+
+ /* Now setup the dpll with the regular function */
+ do_setup_dpll(&prcm->cm_clkmode_dpll_usb, params, DPLL_LOCK, "usb");
+}
+#endif
+
static void setup_dplls(void)
{
u32 temp;
@@ -282,13 +311,16 @@ static void setup_dplls(void)
/* MPU dpll */
configure_mpu_dpll();
+
+#ifdef CONFIG_USB_EHCI_OMAP
+ setup_usb_dpll();
+#endif
}
#ifdef CONFIG_SYS_CLOCKS_ENABLE_ALL
static void setup_non_essential_dplls(void)
{
u32 sys_clk_khz, abe_ref_clk;
- u32 sd_div, num, den;
const struct dpll_params *params;
sys_clk_khz = get_sys_clk_freq() / 1000;
@@ -300,26 +332,6 @@ static void setup_non_essential_dplls(void)
params = get_iva_dpll_params();
do_setup_dpll(&prcm->cm_clkmode_dpll_iva, params, DPLL_LOCK, "iva");
- /*
- * USB:
- * USB dpll is J-type. Need to set DPLL_SD_DIV for jitter correction
- * DPLL_SD_DIV = CEILING ([DPLL_MULT/(DPLL_DIV+1)]* CLKINP / 250)
- * - where CLKINP is sys_clk in MHz
- * Use CLKINP in KHz and adjust the denominator accordingly so
- * that we have enough accuracy and at the same time no overflow
- */
- params = get_usb_dpll_params();
- num = params->m * sys_clk_khz;
- den = (params->n + 1) * 250 * 1000;
- num += den - 1;
- sd_div = num / den;
- clrsetbits_le32(&prcm->cm_clksel_dpll_usb,
- CM_CLKSEL_DPLL_DPLL_SD_DIV_MASK,
- sd_div << CM_CLKSEL_DPLL_DPLL_SD_DIV_SHIFT);
-
- /* Now setup the dpll with the regular function */
- do_setup_dpll(&prcm->cm_clkmode_dpll_usb, params, DPLL_LOCK, "usb");
-
/* Configure ABE dpll */
params = get_abe_dpll_params();
#ifdef CONFIG_SYS_OMAP_ABE_SYSCK