clockdomain.c
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/*
* OMAP clockdomain support
*
* 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.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/clk-provider.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/clk/ti.h>
#undef pr_fmt
#define pr_fmt(fmt) "%s: " fmt, __func__
static void __init of_ti_clockdomain_setup(struct device_node *node)
{
struct clk *clk;
struct clk_hw *clk_hw;
const char *clkdm_name = node->name;
int i;
int num_clks;
num_clks = of_count_phandle_with_args(node, "clocks", "#clock-cells");
for (i = 0; i < num_clks; i++) {
clk = of_clk_get(node, i);
if (__clk_get_flags(clk) & CLK_IS_BASIC) {
pr_warn("can't setup clkdm for basic clk %s\n",
__clk_get_name(clk));
continue;
}
clk_hw = __clk_get_hw(clk);
to_clk_hw_omap(clk_hw)->clkdm_name = clkdm_name;
omap2_init_clk_clkdm(clk_hw);
}
}
static struct of_device_id ti_clkdm_match_table[] __initdata = {
{ .compatible = "ti,clockdomain" },
{ }
};
/**
* ti_dt_clockdomains_setup - setup device tree clockdomains
*
* Initializes clockdomain nodes for a SoC. This parses through all the
* nodes with compatible = "ti,clockdomain", and add the clockdomain
* info for all the clocks listed under these. This function shall be
* called after rest of the DT clock init has completed and all
* clock nodes have been registered.
*/
void __init ti_dt_clockdomains_setup(void)
{
struct device_node *np;
for_each_matching_node(np, ti_clkdm_match_table) {
of_ti_clockdomain_setup(np);
}
}