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/*
* OMAP5 Clock init
*
* Copyright (C) 2013 Texas Instruments, Inc.
*
* Tero Kristo (t-kristo@ti.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/io.h>
#include <linux/clk/ti.h>
#include "clock.h"
#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, "timer_32k_ck", "sys_32k_ck"),
DT_CLK(NULL, "sys_clkin_ck", "sys_clkin"),
{ .node_name = NULL },
};
int __init omap5xxx_dt_clk_init(void)
{
int rc;
struct clk *abe_dpll_ref, *abe_dpll, *sys_32k_ck, *usb_dpll;
ti_dt_clocks_register(omap54xx_clks);
omap2_clk_disable_autoidle_all();
ti_clk_add_aliases();
abe_dpll_ref = clk_get_sys(NULL, "abe_dpll_clk_mux");
sys_32k_ck = clk_get_sys(NULL, "sys_32k_ck");
rc = clk_set_parent(abe_dpll_ref, sys_32k_ck);
abe_dpll = clk_get_sys(NULL, "dpll_abe_ck");
if (!rc)
rc = clk_set_rate(abe_dpll, OMAP5_DPLL_ABE_DEFFREQ);
if (rc)
pr_err("%s: failed to configure ABE DPLL!\n", __func__);
abe_dpll = clk_get_sys(NULL, "dpll_abe_m2x2_ck");
if (!rc)
rc = clk_set_rate(abe_dpll, OMAP5_DPLL_ABE_DEFFREQ * 2);
if (rc)
pr_err("%s: failed to configure ABE m2x2 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;
}
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