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Commit 62125a46 authored by Roger Quadros's avatar Roger Quadros Committed by Mike Turquette
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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: default avatarRoger Quadros <rogerq@ti.com>
Signed-off-by: default avatarTero Kristo <t-kristo@ti.com>
Tested-by: default avatarNishanth Menon <nm@ti.com>
Acked-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
parent 52b14728

drivers/clk/ti/clk-54xx.c

+17 −1
Original line number Diff line number Diff line
@@ -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;

}