CLK: ti: dra7: Initialize USB_DPLL

USB_DPLL must be initialized and locked at boot so that
USB modules can work.

Also program USB_DLL_M2 output to half rate.

CC: Mike Turquette <mturquette@linaro.org>
CC: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>

diff --git a/drivers/clk/ti/clk-7xx.c b/drivers/clk/ti/clk-7xx.c
index e158133..09dbe38 100644 (file)
--- a/drivers/clk/ti/clk-7xx.c
+++ b/drivers/clk/ti/clk-7xx.c
@@ -18,6 +18,7 @@
 
 #define DRA7_DPLL_ABE_DEFFREQ                          361267200
 #define DRA7_DPLL_GMAC_DEFFREQ                         1000000000
+#define DRA7_DPLL_USB_DEFFREQ                          960000000
 
 
 static struct ti_dt_clk dra7xx_clks[] = {
@@ -327,5 +328,15 @@ int __init dra7xx_dt_clk_init(void)
        if (rc)
                pr_err("%s: failed to configure GMAC DPLL!\n", __func__);
 
+       dpll_ck = clk_get_sys(NULL, "dpll_usb_ck");
+       rc = clk_set_rate(dpll_ck, DRA7_DPLL_USB_DEFFREQ);
+       if (rc)
+               pr_err("%s: failed to configure USB DPLL!\n", __func__);
+
+       dpll_ck = clk_get_sys(NULL, "dpll_usb_m2_ck");
+       rc = clk_set_rate(dpll_ck, DRA7_DPLL_USB_DEFFREQ/2);
+       if (rc)
+               pr_err("%s: failed to set USB_DPLL M2 OUT\n", __func__);
+
        return rc;
 }