board-km_kirkwood.c

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/*
 * Copyright 2012 2012 KEYMILE AG, CH-3097 Bern
 * Valentin Longchamp <[email protected]>
 *
 * arch/arm/mach-kirkwood/board-km_kirkwood.c
 *
 * Keymile km_kirkwood Reference Desing Init for drivers not converted to
 * flattened device tree yet.
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2.  This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mv643xx_eth.h>
#include <linux/clk.h>
#include <linux/clk-private.h>
#include "common.h"
#include "mpp.h"

static struct mv643xx_eth_platform_data km_kirkwood_ge00_data = {
    .phy_addr   = MV643XX_ETH_PHY_ADDR(0),
};

static unsigned int km_kirkwood_mpp_config[] __initdata = {
    MPP8_GPIO,  /* I2C SDA */
    MPP9_GPIO,  /* I2C SCL */
    0
};

void __init km_kirkwood_init(void)
{
    struct clk *sata_clk;
    /*
     * Basic setup. Needs to be called early.
     */
    kirkwood_mpp_conf(km_kirkwood_mpp_config);

    /*
     * Our variant of kirkwood (integrated in the Bobcat) hangs on accessing
     * SATA bits (14-15) of the Clock Gating Control Register. Since these
     * devices are also not present in this variant, their clocks get
     * disabled because unused when clk_disable_unused() gets called.
     * That's why we change the flags to these clocks to CLK_IGNORE_UNUSED
     */
    sata_clk = clk_get_sys("sata_mv.0", "0");
    if (!IS_ERR(sata_clk))
        sata_clk->flags |= CLK_IGNORE_UNUSED;
    sata_clk = clk_get_sys("sata_mv.0", "1");
    if (!IS_ERR(sata_clk))
        sata_clk->flags |= CLK_IGNORE_UNUSED;

    kirkwood_ehci_init();
    kirkwood_ge00_init(&km_kirkwood_ge00_data);
}