diff options
| author | Roger Quadros <rogerq@ti.com> | 2013-07-24 15:30:55 +0200 |
|---|---|---|
| committer | Mike Turquette <mturquette@linaro.org> | 2014-01-17 21:35:27 +0100 |
| commit | 62125a46cd717ad8fa6a64d260d46a0a108e6222 (patch) | |
| tree | d77f91368cf32c9b3c54c84e400284e546bb6b06 /drivers/clk | |
| parent | CLK: TI: add omap5 clock init file (diff) | |
| download | linux-62125a46cd717ad8fa6a64d260d46a0a108e6222.tar.xz linux-62125a46cd717ad8fa6a64d260d46a0a108e6222.zip | |
CLK: TI: omap5: Initialize USB_DPLL at boot
USB_DPLL must be initialized and locked at boot so that
USB modules can work.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Tested-by: Nishanth Menon <nm@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/ti/clk-54xx.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/clk/ti/clk-54xx.c b/drivers/clk/ti/clk-54xx.c index c876e6ee57b3..0ef9f581286b 100644 --- a/drivers/clk/ti/clk-54xx.c +++ b/drivers/clk/ti/clk-54xx.c @@ -19,6 +19,12 @@ #define OMAP5_DPLL_ABE_DEFFREQ 98304000 +/* + * OMAP543x TRM, section "3.6.3.9.5 DPLL_USB Preferred Settings" + * states it must be at 960MHz + */ +#define OMAP5_DPLL_USB_DEFFREQ 960000000 + static struct ti_dt_clk omap54xx_clks[] = { DT_CLK(NULL, "pad_clks_src_ck", "pad_clks_src_ck"), DT_CLK(NULL, "pad_clks_ck", "pad_clks_ck"), @@ -220,7 +226,7 @@ static struct ti_dt_clk omap54xx_clks[] = { int __init omap5xxx_dt_clk_init(void) { int rc; - struct clk *abe_dpll_ref, *abe_dpll, *sys_32k_ck; + struct clk *abe_dpll_ref, *abe_dpll, *sys_32k_ck, *usb_dpll; ti_dt_clocks_register(omap54xx_clks); @@ -235,5 +241,15 @@ int __init omap5xxx_dt_clk_init(void) if (rc) pr_err("%s: failed to configure ABE DPLL!\n", __func__); + usb_dpll = clk_get_sys(NULL, "dpll_usb_ck"); + rc = clk_set_rate(usb_dpll, OMAP5_DPLL_USB_DEFFREQ); + if (rc) + pr_err("%s: failed to configure USB DPLL!\n", __func__); + + usb_dpll = clk_get_sys(NULL, "dpll_usb_m2_ck"); + rc = clk_set_rate(usb_dpll, OMAP5_DPLL_USB_DEFFREQ/2); + if (rc) + pr_err("%s: failed to set USB_DPLL M2 OUT\n", __func__); + return 0; } |