274 lines
7.5 KiB
C
274 lines
7.5 KiB
C
/*
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* Copyright (C) 2011-2012
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* Lauri Hintsala, Bluegiga, <lauri.hintsala@bluegiga.com>
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* Veli-Pekka Peltola, Bluegiga, <veli-pekka.peltola@bluegiga.com>
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*
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* based on: mach-mx28evk.c
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* Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/leds.h>
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#include <linux/clk.h>
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#include <linux/i2c.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/fixed.h>
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#include <linux/micrel_phy.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/time.h>
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#include <mach/common.h>
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#include <mach/digctl.h>
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#include <mach/iomux-mx28.h>
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#include "devices-mx28.h"
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#define APX4DEVKIT_GPIO_USERLED MXS_GPIO_NR(3, 28)
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static const iomux_cfg_t apx4devkit_pads[] __initconst = {
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/* duart */
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MX28_PAD_PWM0__DUART_RX | MXS_PAD_CTRL,
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MX28_PAD_PWM1__DUART_TX | MXS_PAD_CTRL,
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/* auart0 */
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MX28_PAD_AUART0_RX__AUART0_RX | MXS_PAD_CTRL,
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MX28_PAD_AUART0_TX__AUART0_TX | MXS_PAD_CTRL,
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MX28_PAD_AUART0_CTS__AUART0_CTS | MXS_PAD_CTRL,
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MX28_PAD_AUART0_RTS__AUART0_RTS | MXS_PAD_CTRL,
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/* auart1 */
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MX28_PAD_AUART1_RX__AUART1_RX | MXS_PAD_CTRL,
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MX28_PAD_AUART1_TX__AUART1_TX | MXS_PAD_CTRL,
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/* auart2 */
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MX28_PAD_SSP2_SCK__AUART2_RX | MXS_PAD_CTRL,
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MX28_PAD_SSP2_MOSI__AUART2_TX | MXS_PAD_CTRL,
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/* auart3 */
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MX28_PAD_SSP2_MISO__AUART3_RX | MXS_PAD_CTRL,
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MX28_PAD_SSP2_SS0__AUART3_TX | MXS_PAD_CTRL,
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#define MXS_PAD_FEC (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP)
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/* fec0 */
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MX28_PAD_ENET0_MDC__ENET0_MDC | MXS_PAD_FEC,
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MX28_PAD_ENET0_MDIO__ENET0_MDIO | MXS_PAD_FEC,
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MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | MXS_PAD_FEC,
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MX28_PAD_ENET0_RXD0__ENET0_RXD0 | MXS_PAD_FEC,
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MX28_PAD_ENET0_RXD1__ENET0_RXD1 | MXS_PAD_FEC,
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MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | MXS_PAD_FEC,
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MX28_PAD_ENET0_TXD0__ENET0_TXD0 | MXS_PAD_FEC,
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MX28_PAD_ENET0_TXD1__ENET0_TXD1 | MXS_PAD_FEC,
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MX28_PAD_ENET_CLK__CLKCTRL_ENET | MXS_PAD_FEC,
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/* i2c */
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MX28_PAD_I2C0_SCL__I2C0_SCL,
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MX28_PAD_I2C0_SDA__I2C0_SDA,
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/* mmc0 */
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MX28_PAD_SSP0_DATA0__SSP0_D0 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DATA1__SSP0_D1 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DATA2__SSP0_D2 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DATA3__SSP0_D3 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DATA4__SSP0_D4 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DATA5__SSP0_D5 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DATA6__SSP0_D6 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DATA7__SSP0_D7 |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_CMD__SSP0_CMD |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT |
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(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
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MX28_PAD_SSP0_SCK__SSP0_SCK |
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(MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
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/* led */
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MX28_PAD_PWM3__GPIO_3_28 | MXS_PAD_CTRL,
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/* saif0 & saif1 */
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MX28_PAD_SAIF0_MCLK__SAIF0_MCLK |
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(MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SAIF0_LRCLK__SAIF0_LRCLK |
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(MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SAIF0_BITCLK__SAIF0_BITCLK |
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(MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SAIF0_SDATA0__SAIF0_SDATA0 |
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(MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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MX28_PAD_SAIF1_SDATA0__SAIF1_SDATA0 |
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(MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
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};
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/* led */
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static const struct gpio_led apx4devkit_leds[] __initconst = {
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{
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.name = "user-led",
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.default_trigger = "heartbeat",
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.gpio = APX4DEVKIT_GPIO_USERLED,
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},
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};
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static const struct gpio_led_platform_data apx4devkit_led_data __initconst = {
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.leds = apx4devkit_leds,
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.num_leds = ARRAY_SIZE(apx4devkit_leds),
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};
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static const struct fec_platform_data mx28_fec_pdata __initconst = {
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.phy = PHY_INTERFACE_MODE_RMII,
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};
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static const struct mxs_mmc_platform_data apx4devkit_mmc_pdata __initconst = {
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.wp_gpio = -EINVAL,
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.flags = SLOTF_4_BIT_CAPABLE,
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};
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static const struct i2c_board_info apx4devkit_i2c_boardinfo[] __initconst = {
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{ I2C_BOARD_INFO("sgtl5000", 0x0a) }, /* ASoC */
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{ I2C_BOARD_INFO("pcf8563", 0x51) }, /* RTC */
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};
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#if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || \
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defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
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static struct regulator_consumer_supply apx4devkit_audio_consumer_supplies[] = {
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REGULATOR_SUPPLY("VDDA", "0-000a"),
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REGULATOR_SUPPLY("VDDIO", "0-000a"),
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};
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static struct regulator_init_data apx4devkit_vdd_reg_init_data = {
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.constraints = {
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.name = "3V3",
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.always_on = 1,
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},
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.consumer_supplies = apx4devkit_audio_consumer_supplies,
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.num_consumer_supplies = ARRAY_SIZE(apx4devkit_audio_consumer_supplies),
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};
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static struct fixed_voltage_config apx4devkit_vdd_pdata = {
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.supply_name = "board-3V3",
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.microvolts = 3300000,
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.gpio = -EINVAL,
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.enabled_at_boot = 1,
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.init_data = &apx4devkit_vdd_reg_init_data,
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};
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static struct platform_device apx4devkit_voltage_regulator = {
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.name = "reg-fixed-voltage",
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.id = -1,
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.num_resources = 0,
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.dev = {
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.platform_data = &apx4devkit_vdd_pdata,
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},
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};
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static void __init apx4devkit_add_regulators(void)
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{
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platform_device_register(&apx4devkit_voltage_regulator);
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}
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#else
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static void __init apx4devkit_add_regulators(void) {}
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#endif
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static const struct mxs_saif_platform_data
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apx4devkit_mxs_saif_pdata[] __initconst = {
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/* working on EXTMSTR0 mode (saif0 master, saif1 slave) */
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{
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.master_mode = 1,
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.master_id = 0,
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}, {
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.master_mode = 0,
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.master_id = 0,
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},
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};
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static int apx4devkit_phy_fixup(struct phy_device *phy)
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{
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phy->dev_flags |= MICREL_PHY_50MHZ_CLK;
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return 0;
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}
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static void __init apx4devkit_fec_phy_clk_enable(void)
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{
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struct clk *clk;
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/* Enable fec phy clock */
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clk = clk_get_sys("enet_out", NULL);
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if (!IS_ERR(clk))
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clk_prepare_enable(clk);
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}
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static void __init apx4devkit_init(void)
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{
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mx28_soc_init();
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mxs_iomux_setup_multiple_pads(apx4devkit_pads,
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ARRAY_SIZE(apx4devkit_pads));
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mx28_add_duart();
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mx28_add_auart0();
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mx28_add_auart1();
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mx28_add_auart2();
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mx28_add_auart3();
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/*
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* Register fixup for the Micrel KS8031 PHY clock
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* (shares same ID with KS8051)
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*/
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phy_register_fixup_for_uid(PHY_ID_KS8051, MICREL_PHY_ID_MASK,
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apx4devkit_phy_fixup);
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apx4devkit_fec_phy_clk_enable();
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mx28_add_fec(0, &mx28_fec_pdata);
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mx28_add_mxs_mmc(0, &apx4devkit_mmc_pdata);
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gpio_led_register_device(0, &apx4devkit_led_data);
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mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0);
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mx28_add_saif(0, &apx4devkit_mxs_saif_pdata[0]);
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mx28_add_saif(1, &apx4devkit_mxs_saif_pdata[1]);
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apx4devkit_add_regulators();
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mx28_add_mxs_i2c(0);
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i2c_register_board_info(0, apx4devkit_i2c_boardinfo,
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ARRAY_SIZE(apx4devkit_i2c_boardinfo));
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mxs_add_platform_device("mxs-sgtl5000", 0, NULL, 0, NULL, 0);
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}
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static void __init apx4devkit_timer_init(void)
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{
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mx28_clocks_init();
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}
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static struct sys_timer apx4devkit_timer = {
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.init = apx4devkit_timer_init,
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};
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MACHINE_START(APX4DEVKIT, "Bluegiga APX4 Development Kit")
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.map_io = mx28_map_io,
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.init_irq = mx28_init_irq,
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.timer = &apx4devkit_timer,
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.init_machine = apx4devkit_init,
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.restart = mxs_restart,
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MACHINE_END
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