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kernel add
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/*
* drivers/clk/at91/sckc.c
*
* Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
*/
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/io.h>
#include "sckc.h"
static const struct of_device_id sckc_clk_ids[] __initconst = {
/* Slow clock */
{
.compatible = "atmel,at91sam9x5-clk-slow-osc",
.data = of_at91sam9x5_clk_slow_osc_setup,
},
{
.compatible = "atmel,at91sam9x5-clk-slow-rc-osc",
.data = of_at91sam9x5_clk_slow_rc_osc_setup,
},
{
.compatible = "atmel,at91sam9x5-clk-slow",
.data = of_at91sam9x5_clk_slow_setup,
},
{ /*sentinel*/ }
};
static void __init of_at91sam9x5_sckc_setup(struct device_node *np)
{
struct device_node *childnp;
void (*clk_setup)(struct device_node *, void __iomem *);
const struct of_device_id *clk_id;
void __iomem *regbase = of_iomap(np, 0);
if (!regbase)
return;
for_each_child_of_node(np, childnp) {
clk_id = of_match_node(sckc_clk_ids, childnp);
if (!clk_id)
continue;
clk_setup = clk_id->data;
clk_setup(childnp, regbase);
}
}
CLK_OF_DECLARE(at91sam9x5_clk_sckc, "atmel,at91sam9x5-sckc",
of_at91sam9x5_sckc_setup);
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