clock.c

Go to the documentation of this file.

/*
 * arch/sh/kernel/cpu/clock.c - SuperH clock framework
 *
 *  Copyright (C) 2005 - 2009  Paul Mundt
 *
 * This clock framework is derived from the OMAP version by:
 *
 *  Copyright (C) 2004 - 2008 Nokia Corporation
 *  Written by Tuukka Tikkanen <[email protected]>
 *
 *  Modified for omap shared clock framework by Tony Lindgren <[email protected]>
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <asm/clock.h>
#include <asm/machvec.h>

int __init clk_init(void)
{
    int ret;

    ret = arch_clk_init();
    if (unlikely(ret)) {
        pr_err("%s: CPU clock registration failed.\n", __func__);
        return ret;
    }

    if (sh_mv.mv_clk_init) {
        ret = sh_mv.mv_clk_init();
        if (unlikely(ret)) {
            pr_err("%s: machvec clock initialization failed.\n",
                   __func__);
            return ret;
        }
    }

    /* Kick the child clocks.. */
    recalculate_root_clocks();

    /* Enable the necessary init clocks */
    clk_enable_init_clocks();

    return ret;
}