91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
|
/*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License as
|
||
|
|
* published by the Free Software Foundation version 2.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/clk.h>
|
||
|
|
#include <linux/clk-provider.h>
|
||
|
|
#include <linux/clk/ti.h>
|
||
|
|
#include <linux/of_platform.h>
|
||
|
|
|
||
|
|
#include "clock.h"
|
||
|
|
|
||
|
|
static struct ti_dt_clk dm814_clks[] = {
|
||
|
|
DT_CLK(NULL, "devosc_ck", "devosc_ck"),
|
||
|
|
DT_CLK(NULL, "mpu_ck", "mpu_ck"),
|
||
|
|
DT_CLK(NULL, "sysclk4_ck", "sysclk4_ck"),
|
||
|
|
DT_CLK(NULL, "sysclk5_ck", "sysclk5_ck"),
|
||
|
|
DT_CLK(NULL, "sysclk6_ck", "sysclk6_ck"),
|
||
|
|
DT_CLK(NULL, "sysclk8_ck", "sysclk8_ck"),
|
||
|
|
DT_CLK(NULL, "sysclk10_ck", "sysclk10_ck"),
|
||
|
|
DT_CLK(NULL, "sysclk18_ck", "sysclk18_ck"),
|
||
|
|
DT_CLK(NULL, "timer_sys_ck", "devosc_ck"),
|
||
|
|
DT_CLK(NULL, "timer1_fck", "timer1_fck"),
|
||
|
|
DT_CLK(NULL, "timer2_fck", "timer2_fck"),
|
||
|
|
DT_CLK(NULL, "cpsw_125mhz_gclk", "cpsw_125mhz_gclk"),
|
||
|
|
DT_CLK(NULL, "cpsw_cpts_rft_clk", "cpsw_cpts_rft_clk"),
|
||
|
|
{ .node_name = NULL },
|
||
|
|
};
|
||
|
|
|
||
|
|
static bool timer_clocks_initialized;
|
||
|
|
|
||
|
|
static int __init dm814x_adpll_early_init(void)
|
||
|
|
{
|
||
|
|
struct device_node *np;
|
||
|
|
|
||
|
|
if (!timer_clocks_initialized)
|
||
|
|
return -ENODEV;
|
||
|
|
|
||
|
|
np = of_find_node_by_name(NULL, "pllss");
|
||
|
|
if (!np) {
|
||
|
|
pr_err("Could not find node for plls\n");
|
||
|
|
return -ENODEV;
|
||
|
|
}
|
||
|
|
|
||
|
|
of_platform_populate(np, NULL, NULL, NULL);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
core_initcall(dm814x_adpll_early_init);
|
||
|
|
|
||
|
|
static const char * const init_clocks[] = {
|
||
|
|
"pll040clkout", /* MPU 481c5040.adpll.clkout */
|
||
|
|
"pll290clkout", /* DDR 481c5290.adpll.clkout */
|
||
|
|
};
|
||
|
|
|
||
|
|
static int __init dm814x_adpll_enable_init_clocks(void)
|
||
|
|
{
|
||
|
|
int i, err;
|
||
|
|
|
||
|
|
if (!timer_clocks_initialized)
|
||
|
|
return -ENODEV;
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(init_clocks); i++) {
|
||
|
|
struct clk *clock;
|
||
|
|
|
||
|
|
clock = clk_get(NULL, init_clocks[i]);
|
||
|
|
if (WARN(IS_ERR(clock), "could not find init clock %s\n",
|
||
|
|
init_clocks[i]))
|
||
|
|
continue;
|
||
|
|
err = clk_prepare_enable(clock);
|
||
|
|
if (WARN(err, "could not enable init clock %s\n",
|
||
|
|
init_clocks[i]))
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
postcore_initcall(dm814x_adpll_enable_init_clocks);
|
||
|
|
|
||
|
|
int __init dm814x_dt_clk_init(void)
|
||
|
|
{
|
||
|
|
ti_dt_clocks_register(dm814_clks);
|
||
|
|
omap2_clk_disable_autoidle_all();
|
||
|
|
omap2_clk_enable_init_clocks(NULL, 0);
|
||
|
|
timer_clocks_initialized = true;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|