brownstone.c

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/*
 *  linux/arch/arm/mach-mmp/brownstone.c
 *
 *  Support for the Marvell Brownstone Development Platform.
 *
 *  Copyright (C) 2009-2010 Marvell International Ltd.
 *
 *  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
 *  publishhed by the Free Software Foundation.
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/max8649.h>
#include <linux/regulator/fixed.h>
#include <linux/mfd/max8925.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/addr-map.h>
#include <mach/mfp-mmp2.h>
#include <mach/mmp2.h>
#include <mach/irqs.h>

#include "common.h"

#define BROWNSTONE_NR_IRQS  (MMP_NR_IRQS + 40)

#define GPIO_5V_ENABLE      (89)

static unsigned long brownstone_pin_config[] __initdata = {
    /* UART1 */
    GPIO29_UART1_RXD,
    GPIO30_UART1_TXD,

    /* UART3 */
    GPIO51_UART3_RXD,
    GPIO52_UART3_TXD,

    /* DFI */
    GPIO168_DFI_D0,
    GPIO167_DFI_D1,
    GPIO166_DFI_D2,
    GPIO165_DFI_D3,
    GPIO107_DFI_D4,
    GPIO106_DFI_D5,
    GPIO105_DFI_D6,
    GPIO104_DFI_D7,
    GPIO111_DFI_D8,
    GPIO164_DFI_D9,
    GPIO163_DFI_D10,
    GPIO162_DFI_D11,
    GPIO161_DFI_D12,
    GPIO110_DFI_D13,
    GPIO109_DFI_D14,
    GPIO108_DFI_D15,
    GPIO143_ND_nCS0,
    GPIO144_ND_nCS1,
    GPIO147_ND_nWE,
    GPIO148_ND_nRE,
    GPIO150_ND_ALE,
    GPIO149_ND_CLE,
    GPIO112_ND_RDY0,
    GPIO160_ND_RDY1,

    /* PMIC */
    PMIC_PMIC_INT | MFP_LPM_EDGE_FALL,

    /* MMC0 */
    GPIO131_MMC1_DAT3 | MFP_PULL_HIGH,
    GPIO132_MMC1_DAT2 | MFP_PULL_HIGH,
    GPIO133_MMC1_DAT1 | MFP_PULL_HIGH,
    GPIO134_MMC1_DAT0 | MFP_PULL_HIGH,
    GPIO136_MMC1_CMD | MFP_PULL_HIGH,
    GPIO139_MMC1_CLK,
    GPIO140_MMC1_CD | MFP_PULL_LOW,
    GPIO141_MMC1_WP | MFP_PULL_LOW,

    /* MMC1 */
    GPIO37_MMC2_DAT3 | MFP_PULL_HIGH,
    GPIO38_MMC2_DAT2 | MFP_PULL_HIGH,
    GPIO39_MMC2_DAT1 | MFP_PULL_HIGH,
    GPIO40_MMC2_DAT0 | MFP_PULL_HIGH,
    GPIO41_MMC2_CMD | MFP_PULL_HIGH,
    GPIO42_MMC2_CLK,

    /* MMC2 */
    GPIO165_MMC3_DAT7 | MFP_PULL_HIGH,
    GPIO162_MMC3_DAT6 | MFP_PULL_HIGH,
    GPIO166_MMC3_DAT5 | MFP_PULL_HIGH,
    GPIO163_MMC3_DAT4 | MFP_PULL_HIGH,
    GPIO167_MMC3_DAT3 | MFP_PULL_HIGH,
    GPIO164_MMC3_DAT2 | MFP_PULL_HIGH,
    GPIO168_MMC3_DAT1 | MFP_PULL_HIGH,
    GPIO111_MMC3_DAT0 | MFP_PULL_HIGH,
    GPIO112_MMC3_CMD | MFP_PULL_HIGH,
    GPIO151_MMC3_CLK,

    /* 5V regulator */
    GPIO89_GPIO,
};

static struct regulator_consumer_supply max8649_supply[] = {
    REGULATOR_SUPPLY("vcc_core", NULL),
};

static struct regulator_init_data max8649_init_data = {
    .constraints    = {
        .name       = "vcc_core range",
        .min_uV     = 1150000,
        .max_uV     = 1280000,
        .always_on  = 1,
        .boot_on    = 1,
        .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
    },
    .num_consumer_supplies  = 1,
    .consumer_supplies  = &max8649_supply[0],
};

static struct max8649_platform_data brownstone_max8649_info = {
    .mode       = 2,    /* VID1 = 1, VID0 = 0 */
    .extclk     = 0,
    .ramp_timing    = MAX8649_RAMP_32MV,
    .regulator  = &max8649_init_data,
};

static struct regulator_consumer_supply brownstone_v_5vp_supplies[] = {
    REGULATOR_SUPPLY("v_5vp", NULL),
};

static struct regulator_init_data brownstone_v_5vp_data = {
    .constraints    = {
        .valid_ops_mask     = REGULATOR_CHANGE_STATUS,
    },
    .num_consumer_supplies  = ARRAY_SIZE(brownstone_v_5vp_supplies),
    .consumer_supplies  = brownstone_v_5vp_supplies,
};

static struct fixed_voltage_config brownstone_v_5vp = {
    .supply_name        = "v_5vp",
    .microvolts     = 5000000,
    .gpio           = GPIO_5V_ENABLE,
    .enable_high        = 1,
    .enabled_at_boot    = 1,
    .init_data      = &brownstone_v_5vp_data,
};

static struct platform_device brownstone_v_5vp_device = {
    .name       = "reg-fixed-voltage",
    .id     = 1,
    .dev = {
        .platform_data = &brownstone_v_5vp,
    },
};

static struct max8925_platform_data brownstone_max8925_info = {
    .irq_base       = MMP_NR_IRQS,
};

static struct i2c_board_info brownstone_twsi1_info[] = {
    [0] = {
        .type       = "max8649",
        .addr       = 0x60,
        .platform_data  = &brownstone_max8649_info,
    },
    [1] = {
        .type       = "max8925",
        .addr       = 0x3c,
        .irq        = IRQ_MMP2_PMIC,
        .platform_data  = &brownstone_max8925_info,
    },
};

static struct sdhci_pxa_platdata mmp2_sdh_platdata_mmc0 = {
    .clk_delay_cycles = 0x1f,
};

static struct sdhci_pxa_platdata mmp2_sdh_platdata_mmc2 = {
    .clk_delay_cycles = 0x1f,
    .flags = PXA_FLAG_CARD_PERMANENT
        | PXA_FLAG_SD_8_BIT_CAPABLE_SLOT,
};

static struct sram_platdata mmp2_asram_platdata = {
    .pool_name  = "asram",
    .granularity    = SRAM_GRANULARITY,
};

static struct sram_platdata mmp2_isram_platdata = {
    .pool_name  = "isram",
    .granularity    = SRAM_GRANULARITY,
};

static void __init brownstone_init(void)
{
    mfp_config(ARRAY_AND_SIZE(brownstone_pin_config));

    /* on-chip devices */
    mmp2_add_uart(1);
    mmp2_add_uart(3);
    platform_device_register(&mmp2_device_gpio);
    mmp2_add_twsi(1, NULL, ARRAY_AND_SIZE(brownstone_twsi1_info));
    mmp2_add_sdhost(0, &mmp2_sdh_platdata_mmc0); /* SD/MMC */
    mmp2_add_sdhost(2, &mmp2_sdh_platdata_mmc2); /* eMMC */
    mmp2_add_asram(&mmp2_asram_platdata);
    mmp2_add_isram(&mmp2_isram_platdata);

    /* enable 5v regulator */
    platform_device_register(&brownstone_v_5vp_device);
}

MACHINE_START(BROWNSTONE, "Brownstone Development Platform")
    /* Maintainer: Haojian Zhuang <[email protected]> */
    .map_io     = mmp_map_io,
    .nr_irqs    = BROWNSTONE_NR_IRQS,
    .init_irq   = mmp2_init_irq,
    .timer      = &mmp2_timer,
    .init_machine   = brownstone_init,
    .restart    = mmp_restart,
MACHINE_END