From 94e72ae5dbb1aff59791e6f96e2f0416b8a82257 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Fri, 7 Mar 2014 15:09:04 +0200 Subject: 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 CC: Tero Kristo Signed-off-by: Roger Quadros Signed-off-by: Tero Kristo --- drivers/clk/ti/clk-7xx.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/clk/ti') diff --git a/drivers/clk/ti/clk-7xx.c b/drivers/clk/ti/clk-7xx.c index e1581335937d..09dbe38e183d 100644 --- 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; } -- cgit v1.2.3