From: "Govindraj.R" <govindraj.r...@ti.com>
usb dpll configuration is done only part of non-essential
dppl configuration however if CONFIG_USB_EHCI_OMAP is defined
we may have to configure usb dpll's for proper functioning
of usb modules. So move the usb dppl configuration to a new func.
and utilise the same during essential dpll configuration.
Signed-off-by: Govindraj.R <govindraj.r...@ti.com>
---
arch/arm/cpu/armv7/omap-common/clocks-common.c | 52 ++++++++++++++---------
1 files changed, 32 insertions(+), 20 deletions(-)
diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c
b/arch/arm/cpu/armv7/omap-common/clocks-common.c
index 1da90a4..770ac19 100644
--- a/arch/arm/cpu/armv7/omap-common/clocks-common.c
+++ b/arch/arm/cpu/armv7/omap-common/clocks-common.c
@@ -251,6 +251,33 @@ void configure_mpu_dpll(void)
debug("MPU DPLL locked\n");
}
+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");
+}
+
static void setup_dplls(void)
{
u32 temp;
@@ -282,13 +309,16 @@ 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;
@@ -300,25 +330,7 @@ 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");
+ setup_usb_dpll();
/* Configure ABE dpll */
params = get_abe_dpll_params();
--
1.7.5.4
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