/* * Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved. * * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <linux/delay.h> #include <linux/platform_device.h> #include <linux/gpio.h> #include <linux/leds.h> #include <linux/clk.h> #include <linux/i2c.h> #include <linux/regulator/machine.h> #include <linux/regulator/fixed.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> #include <asm/mach/time.h> #include <mach/common.h> #include <mach/iomux-mx28.h> #include <mach/digctl.h> #include "devices-mx28.h" #define MX28EVK_FLEXCAN_SWITCH MXS_GPIO_NR(2, 13) #define MX28EVK_FEC_PHY_POWER MXS_GPIO_NR(2, 15) #define MX28EVK_GPIO_LED MXS_GPIO_NR(3, 5) #define MX28EVK_BL_ENABLE MXS_GPIO_NR(3, 18) #define MX28EVK_LCD_ENABLE MXS_GPIO_NR(3, 30) #define MX28EVK_FEC_PHY_RESET MXS_GPIO_NR(4, 13) #define MX28EVK_MMC0_WRITE_PROTECT MXS_GPIO_NR(2, 12) #define MX28EVK_MMC1_WRITE_PROTECT MXS_GPIO_NR(0, 28) #define MX28EVK_MMC0_SLOT_POWER MXS_GPIO_NR(3, 28) #define MX28EVK_MMC1_SLOT_POWER MXS_GPIO_NR(3, 29) static const iomux_cfg_t mx28evk_pads[] __initconst = { /* duart */ MX28_PAD_PWM0__DUART_RX | MXS_PAD_CTRL, MX28_PAD_PWM1__DUART_TX | MXS_PAD_CTRL, /* auart0 */ MX28_PAD_AUART0_RX__AUART0_RX | MXS_PAD_CTRL, MX28_PAD_AUART0_TX__AUART0_TX | MXS_PAD_CTRL, MX28_PAD_AUART0_CTS__AUART0_CTS | MXS_PAD_CTRL, MX28_PAD_AUART0_RTS__AUART0_RTS | MXS_PAD_CTRL, /* auart3 */ MX28_PAD_AUART3_RX__AUART3_RX | MXS_PAD_CTRL, MX28_PAD_AUART3_TX__AUART3_TX | MXS_PAD_CTRL, MX28_PAD_AUART3_CTS__AUART3_CTS | MXS_PAD_CTRL, MX28_PAD_AUART3_RTS__AUART3_RTS | MXS_PAD_CTRL, #define MXS_PAD_FEC (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP) /* fec0 */ MX28_PAD_ENET0_MDC__ENET0_MDC | MXS_PAD_FEC, MX28_PAD_ENET0_MDIO__ENET0_MDIO | MXS_PAD_FEC, MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | MXS_PAD_FEC, MX28_PAD_ENET0_RXD0__ENET0_RXD0 | MXS_PAD_FEC, MX28_PAD_ENET0_RXD1__ENET0_RXD1 | MXS_PAD_FEC, MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | MXS_PAD_FEC, MX28_PAD_ENET0_TXD0__ENET0_TXD0 | MXS_PAD_FEC, MX28_PAD_ENET0_TXD1__ENET0_TXD1 | MXS_PAD_FEC, MX28_PAD_ENET_CLK__CLKCTRL_ENET | MXS_PAD_FEC, /* fec1 */ MX28_PAD_ENET0_CRS__ENET1_RX_EN | MXS_PAD_FEC, MX28_PAD_ENET0_RXD2__ENET1_RXD0 | MXS_PAD_FEC, MX28_PAD_ENET0_RXD3__ENET1_RXD1 | MXS_PAD_FEC, MX28_PAD_ENET0_COL__ENET1_TX_EN | MXS_PAD_FEC, MX28_PAD_ENET0_TXD2__ENET1_TXD0 | MXS_PAD_FEC, MX28_PAD_ENET0_TXD3__ENET1_TXD1 | MXS_PAD_FEC, /* phy power line */ MX28_PAD_SSP1_DATA3__GPIO_2_15 | MXS_PAD_CTRL, /* phy reset line */ MX28_PAD_ENET0_RX_CLK__GPIO_4_13 | MXS_PAD_CTRL, /* flexcan0 */ MX28_PAD_GPMI_RDY2__CAN0_TX, MX28_PAD_GPMI_RDY3__CAN0_RX, /* flexcan1 */ MX28_PAD_GPMI_CE2N__CAN1_TX, MX28_PAD_GPMI_CE3N__CAN1_RX, /* transceiver power control */ MX28_PAD_SSP1_CMD__GPIO_2_13, /* mxsfb (lcdif) */ MX28_PAD_LCD_D00__LCD_D0 | MXS_PAD_CTRL, MX28_PAD_LCD_D01__LCD_D1 | MXS_PAD_CTRL, MX28_PAD_LCD_D02__LCD_D2 | MXS_PAD_CTRL, MX28_PAD_LCD_D03__LCD_D3 | MXS_PAD_CTRL, MX28_PAD_LCD_D04__LCD_D4 | MXS_PAD_CTRL, MX28_PAD_LCD_D05__LCD_D5 | MXS_PAD_CTRL, MX28_PAD_LCD_D06__LCD_D6 | MXS_PAD_CTRL, MX28_PAD_LCD_D07__LCD_D7 | MXS_PAD_CTRL, MX28_PAD_LCD_D08__LCD_D8 | MXS_PAD_CTRL, MX28_PAD_LCD_D09__LCD_D9 | MXS_PAD_CTRL, MX28_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL, MX28_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL, MX28_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL, MX28_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL, MX28_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL, MX28_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL, MX28_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL, MX28_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL, MX28_PAD_LCD_D18__LCD_D18 | MXS_PAD_CTRL, MX28_PAD_LCD_D19__LCD_D19 | MXS_PAD_CTRL, MX28_PAD_LCD_D20__LCD_D20 | MXS_PAD_CTRL, MX28_PAD_LCD_D21__LCD_D21 | MXS_PAD_CTRL, MX28_PAD_LCD_D22__LCD_D22 | MXS_PAD_CTRL, MX28_PAD_LCD_D23__LCD_D23 | MXS_PAD_CTRL, MX28_PAD_LCD_RD_E__LCD_VSYNC | MXS_PAD_CTRL, MX28_PAD_LCD_WR_RWN__LCD_HSYNC | MXS_PAD_CTRL, MX28_PAD_LCD_RS__LCD_DOTCLK | MXS_PAD_CTRL, MX28_PAD_LCD_CS__LCD_ENABLE | MXS_PAD_CTRL, /* LCD panel enable */ MX28_PAD_LCD_RESET__GPIO_3_30 | MXS_PAD_CTRL, /* backlight control */ MX28_PAD_PWM2__GPIO_3_18 | MXS_PAD_CTRL, /* mmc0 */ MX28_PAD_SSP0_DATA0__SSP0_D0 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_SSP0_DATA1__SSP0_D1 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_SSP0_DATA2__SSP0_D2 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_SSP0_DATA3__SSP0_D3 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_SSP0_DATA4__SSP0_D4 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_SSP0_DATA5__SSP0_D5 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_SSP0_DATA6__SSP0_D6 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_SSP0_DATA7__SSP0_D7 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_SSP0_CMD__SSP0_CMD | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), MX28_PAD_SSP0_SCK__SSP0_SCK | (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), /* write protect */ MX28_PAD_SSP1_SCK__GPIO_2_12 | (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), /* slot power enable */ MX28_PAD_PWM3__GPIO_3_28 | (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), /* mmc1 */ MX28_PAD_GPMI_D00__SSP1_D0 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_GPMI_D01__SSP1_D1 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_GPMI_D02__SSP1_D2 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_GPMI_D03__SSP1_D3 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_GPMI_D04__SSP1_D4 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_GPMI_D05__SSP1_D5 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_GPMI_D06__SSP1_D6 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_GPMI_D07__SSP1_D7 | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_GPMI_RDY1__SSP1_CMD | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_GPMI_RDY0__SSP1_CARD_DETECT | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), MX28_PAD_GPMI_WRN__SSP1_SCK | (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), /* write protect */ MX28_PAD_GPMI_RESETN__GPIO_0_28 | (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), /* slot power enable */ MX28_PAD_PWM4__GPIO_3_29 | (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), /* led */ MX28_PAD_AUART1_TX__GPIO_3_5 | MXS_PAD_CTRL, /* I2C */ MX28_PAD_I2C0_SCL__I2C0_SCL | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_I2C0_SDA__I2C0_SDA | (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), /* saif0 & saif1 */ MX28_PAD_SAIF0_MCLK__SAIF0_MCLK | (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_SAIF0_LRCLK__SAIF0_LRCLK | (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_SAIF0_BITCLK__SAIF0_BITCLK | (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_SAIF0_SDATA0__SAIF0_SDATA0 | (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), MX28_PAD_SAIF1_SDATA0__SAIF1_SDATA0 | (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP), }; /* led */ static const struct gpio_led mx28evk_leds[] __initconst = { { .name = "GPIO-LED", .default_trigger = "heartbeat", .gpio = MX28EVK_GPIO_LED, }, }; static const struct gpio_led_platform_data mx28evk_led_data __initconst = { .leds = mx28evk_leds, .num_leds = ARRAY_SIZE(mx28evk_leds), }; /* fec */ static void __init mx28evk_fec_reset(void) { int ret; struct clk *clk; /* Enable fec phy clock */ clk = clk_get_sys("pll2", NULL); if (!IS_ERR(clk)) clk_prepare_enable(clk); /* Power up fec phy */ ret = gpio_request(MX28EVK_FEC_PHY_POWER, "fec-phy-power"); if (ret) { pr_err("Failed to request gpio fec-phy-%s: %d\n", "power", ret); return; } ret = gpio_direction_output(MX28EVK_FEC_PHY_POWER, 0); if (ret) { pr_err("Failed to drive gpio fec-phy-%s: %d\n", "power", ret); return; } /* Reset fec phy */ ret = gpio_request(MX28EVK_FEC_PHY_RESET, "fec-phy-reset"); if (ret) { pr_err("Failed to request gpio fec-phy-%s: %d\n", "reset", ret); return; } gpio_direction_output(MX28EVK_FEC_PHY_RESET, 0); if (ret) { pr_err("Failed to drive gpio fec-phy-%s: %d\n", "reset", ret); return; } mdelay(1); gpio_set_value(MX28EVK_FEC_PHY_RESET, 1); } static struct fec_platform_data mx28_fec_pdata[] __initdata = { { /* fec0 */ .phy = PHY_INTERFACE_MODE_RMII, }, { /* fec1 */ .phy = PHY_INTERFACE_MODE_RMII, }, }; static int __init mx28evk_fec_get_mac(void) { int i; u32 val; const u32 *ocotp = mxs_get_ocotp(); if (!ocotp) goto error; /* * OCOTP only stores the last 4 octets for each mac address, * so hard-code Freescale OUI (00:04:9f) here. */ for (i = 0; i < 2; i++) { val = ocotp[i * 4]; mx28_fec_pdata[i].mac[0] = 0x00; mx28_fec_pdata[i].mac[1] = 0x04; mx28_fec_pdata[i].mac[2] = 0x9f; mx28_fec_pdata[i].mac[3] = (val >> 16) & 0xff; mx28_fec_pdata[i].mac[4] = (val >> 8) & 0xff; mx28_fec_pdata[i].mac[5] = (val >> 0) & 0xff; } return 0; error: pr_err("%s: timeout when reading fec mac from OCOTP\n", __func__); return -ETIMEDOUT; } /* * MX28EVK_FLEXCAN_SWITCH is shared between both flexcan controllers */ static int flexcan0_en, flexcan1_en; static void mx28evk_flexcan_switch(void) { if (flexcan0_en || flexcan1_en) gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 1); else gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 0); } static void mx28evk_flexcan0_switch(int enable) { flexcan0_en = enable; mx28evk_flexcan_switch(); } static void mx28evk_flexcan1_switch(int enable) { flexcan1_en = enable; mx28evk_flexcan_switch(); } static const struct flexcan_platform_data mx28evk_flexcan_pdata[] __initconst = { { .transceiver_switch = mx28evk_flexcan0_switch, }, { .transceiver_switch = mx28evk_flexcan1_switch, } }; /* mxsfb (lcdif) */ static struct fb_videomode mx28evk_video_modes[] = { { .name = "Seiko-43WVF1G", .refresh = 60, .xres = 800, .yres = 480, .pixclock = 29851, /* picosecond (33.5 MHz) */ .left_margin = 89, .right_margin = 164, .upper_margin = 23, .lower_margin = 10, .hsync_len = 10, .vsync_len = 10, .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT | FB_SYNC_DOTCLK_FAILING_ACT, }, }; static const struct mxsfb_platform_data mx28evk_mxsfb_pdata __initconst = { .mode_list = mx28evk_video_modes, .mode_count = ARRAY_SIZE(mx28evk_video_modes), .default_bpp = 32, .ld_intf_width = STMLCDIF_24BIT, }; static struct mxs_mmc_platform_data mx28evk_mmc_pdata[] __initdata = { { /* mmc0 */ .wp_gpio = MX28EVK_MMC0_WRITE_PROTECT, .flags = SLOTF_8_BIT_CAPABLE, }, { /* mmc1 */ .wp_gpio = MX28EVK_MMC1_WRITE_PROTECT, .flags = SLOTF_8_BIT_CAPABLE, }, }; static struct i2c_board_info mxs_i2c0_board_info[] __initdata = { { I2C_BOARD_INFO("sgtl5000", 0x0a), }, }; #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE) static struct regulator_consumer_supply mx28evk_audio_consumer_supplies[] = { REGULATOR_SUPPLY("VDDA", "0-000a"), REGULATOR_SUPPLY("VDDIO", "0-000a"), }; static struct regulator_init_data mx28evk_vdd_reg_init_data = { .constraints = { .name = "3V3", .always_on = 1, }, .consumer_supplies = mx28evk_audio_consumer_supplies, .num_consumer_supplies = ARRAY_SIZE(mx28evk_audio_consumer_supplies), }; static struct fixed_voltage_config mx28evk_vdd_pdata = { .supply_name = "board-3V3", .microvolts = 3300000, .gpio = -EINVAL, .enabled_at_boot = 1, .init_data = &mx28evk_vdd_reg_init_data, }; static struct platform_device mx28evk_voltage_regulator = { .name = "reg-fixed-voltage", .id = -1, .num_resources = 0, .dev = { .platform_data = &mx28evk_vdd_pdata, }, }; static void __init mx28evk_add_regulators(void) { platform_device_register(&mx28evk_voltage_regulator); } #else static void __init mx28evk_add_regulators(void) {} #endif static struct gpio mx28evk_lcd_gpios[] = { { MX28EVK_LCD_ENABLE, GPIOF_OUT_INIT_HIGH, "lcd-enable" }, { MX28EVK_BL_ENABLE, GPIOF_OUT_INIT_HIGH, "bl-enable" }, }; static const struct mxs_saif_platform_data mx28evk_mxs_saif_pdata[] __initconst = { /* working on EXTMSTR0 mode (saif0 master, saif1 slave) */ { .master_mode = 1, .master_id = 0, }, { .master_mode = 0, .master_id = 0, }, }; static void __init mx28evk_init(void) { int ret; mxs_iomux_setup_multiple_pads(mx28evk_pads, ARRAY_SIZE(mx28evk_pads)); mx28_add_duart(); mx28_add_auart0(); mx28_add_auart3(); if (mx28evk_fec_get_mac()) pr_warn("%s: failed on fec mac setup\n", __func__); mx28evk_fec_reset(); mx28_add_fec(0, &mx28_fec_pdata[0]); mx28_add_fec(1, &mx28_fec_pdata[1]); ret = gpio_request_one(MX28EVK_FLEXCAN_SWITCH, GPIOF_DIR_OUT, "flexcan-switch"); if (ret) { pr_err("failed to request gpio flexcan-switch: %d\n", ret); } else { mx28_add_flexcan(0, &mx28evk_flexcan_pdata[0]); mx28_add_flexcan(1, &mx28evk_flexcan_pdata[1]); } ret = gpio_request_array(mx28evk_lcd_gpios, ARRAY_SIZE(mx28evk_lcd_gpios)); if (ret) pr_warn("failed to request gpio pins for lcd: %d\n", ret); else mx28_add_mxsfb(&mx28evk_mxsfb_pdata); mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0); mx28_add_saif(0, &mx28evk_mxs_saif_pdata[0]); mx28_add_saif(1, &mx28evk_mxs_saif_pdata[1]); mx28_add_mxs_i2c(0); i2c_register_board_info(0, mxs_i2c0_board_info, ARRAY_SIZE(mxs_i2c0_board_info)); mx28evk_add_regulators(); mxs_add_platform_device("mxs-sgtl5000", 0, NULL, 0, NULL, 0); /* power on mmc slot by writing 0 to the gpio */ ret = gpio_request_one(MX28EVK_MMC0_SLOT_POWER, GPIOF_OUT_INIT_LOW, "mmc0-slot-power"); if (ret) pr_warn("failed to request gpio mmc0-slot-power: %d\n", ret); else mx28_add_mxs_mmc(0, &mx28evk_mmc_pdata[0]); ret = gpio_request_one(MX28EVK_MMC1_SLOT_POWER, GPIOF_OUT_INIT_LOW, "mmc1-slot-power"); if (ret) pr_warn("failed to request gpio mmc1-slot-power: %d\n", ret); else mx28_add_mxs_mmc(1, &mx28evk_mmc_pdata[1]); mx28_add_rtc_stmp3xxx(); gpio_led_register_device(0, &mx28evk_led_data); } static void __init mx28evk_timer_init(void) { mx28_clocks_init(); } static struct sys_timer mx28evk_timer = { .init = mx28evk_timer_init, }; MACHINE_START(MX28EVK, "Freescale MX28 EVK") /* Maintainer: Freescale Semiconductor, Inc. */ .map_io = mx28_map_io, .init_irq = mx28_init_irq, .timer = &mx28evk_timer, .init_machine = mx28evk_init, .restart = mxs_restart, MACHINE_END