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CLK: ti: dra7: Initialize USB_DPLL

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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>
This commit is contained in:
Roger Quadros 2014-03-07 15:09:04 +02:00 committed by Tero Kristo
parent 49b6a5e328
commit 94e72ae5db
1 changed files with 11 additions and 0 deletions
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11
drivers/clk/ti/clk-7xx.c
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@ -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;
}