Messages in this thread Patch in this message | | | From | Roger Quadros <> | Subject | [PATCH 1/4] CLK: ti: dra7: Initialize USB_DPLL | Date | Thu, 1 Aug 2013 17:58:51 +0300 |
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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.
Signed-off-by: Roger Quadros <rogerq@ti.com> --- drivers/clk/omap/clk-7xx.c | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/drivers/clk/omap/clk-7xx.c b/drivers/clk/omap/clk-7xx.c index ddb39dd..f444513 100644 --- a/drivers/clk/omap/clk-7xx.c +++ b/drivers/clk/omap/clk-7xx.c @@ -19,6 +19,7 @@ #define DRA7_DPLL_ABE_DEFFREQ 361267200 #define DRA7_DPLL_GMAC_DEFFREQ 1000000000 +#define DRA7_DPLL_USB_DEFFREQ 960000000 static struct omap_dt_clk dra7xx_clks[] = { @@ -63,5 +64,15 @@ int __init dra7xx_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; } -- 1.7.4.1
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