2 * LogicPD i.MX31 SOM-LV development board support
4 * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
6 * based on code for other MX31 boards,
8 * Copyright 2005-2007 Freescale Semiconductor
9 * Copyright (c) 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
10 * Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
23 #include <linux/kernel.h>
24 #include <linux/types.h>
25 #include <linux/init.h>
26 #include <linux/gpio.h>
27 #include <linux/leds.h>
28 #include <linux/platform_device.h>
30 #include <asm/mach-types.h>
31 #include <asm/mach/arch.h>
32 #include <asm/mach/map.h>
34 #include <mach/hardware.h>
35 #include <mach/common.h>
36 #include <mach/iomux-mx3.h>
37 #include <mach/board-mx31lite.h>
39 #include "devices-imx31.h"
43 * This file contains board-specific initialization routines for the
44 * LogicPD i.MX31 SOM-LV development board, aka 'LiteKit'.
45 * If you design an own baseboard for the module, use this file as base
49 static unsigned int litekit_db_board_pins[] __initdata = {
56 MX31_PIN_CSPI1_SCLK__SCLK,
57 MX31_PIN_CSPI1_MOSI__MOSI,
58 MX31_PIN_CSPI1_MISO__MISO,
59 MX31_PIN_CSPI1_SPI_RDY__SPI_RDY,
60 MX31_PIN_CSPI1_SS0__SS0,
61 MX31_PIN_CSPI1_SS1__SS1,
62 MX31_PIN_CSPI1_SS2__SS2,
64 MX31_PIN_SD1_DATA0__SD1_DATA0,
65 MX31_PIN_SD1_DATA1__SD1_DATA1,
66 MX31_PIN_SD1_DATA2__SD1_DATA2,
67 MX31_PIN_SD1_DATA3__SD1_DATA3,
68 MX31_PIN_SD1_CLK__SD1_CLK,
69 MX31_PIN_SD1_CMD__SD1_CMD,
73 static const struct imxuart_platform_data uart_pdata __initconst = {
74 .flags = IMXUART_HAVE_RTSCTS,
79 static int gpio_det, gpio_wp;
81 #define MMC_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
84 static int mxc_mmc1_get_ro(struct device *dev)
86 return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_GPIO1_6));
89 static int mxc_mmc1_init(struct device *dev,
90 irq_handler_t detect_irq, void *data)
94 gpio_det = IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1);
95 gpio_wp = IOMUX_TO_GPIO(MX31_PIN_GPIO1_6);
97 mxc_iomux_set_pad(MX31_PIN_SD1_DATA0,
98 MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
99 mxc_iomux_set_pad(MX31_PIN_SD1_DATA1,
100 MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
101 mxc_iomux_set_pad(MX31_PIN_SD1_DATA2,
102 MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
103 mxc_iomux_set_pad(MX31_PIN_SD1_DATA3,
104 MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
105 mxc_iomux_set_pad(MX31_PIN_SD1_CMD,
106 MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
107 mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG);
109 ret = gpio_request(gpio_det, "MMC detect");
113 ret = gpio_request(gpio_wp, "MMC w/p");
117 gpio_direction_input(gpio_det);
118 gpio_direction_input(gpio_wp);
120 ret = request_irq(IOMUX_TO_IRQ(MX31_PIN_DCD_DCE1), detect_irq,
121 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
137 static void mxc_mmc1_exit(struct device *dev, void *data)
141 free_irq(IOMUX_TO_IRQ(MX31_PIN_DCD_DCE1), data);
144 static const struct imxmmc_platform_data mmc_pdata __initconst = {
145 .get_ro = mxc_mmc1_get_ro,
146 .init = mxc_mmc1_init,
147 .exit = mxc_mmc1_exit,
152 static int spi_internal_chipselect[] = {
158 static const struct spi_imx_master spi0_pdata __initconst = {
159 .chipselect = spi_internal_chipselect,
160 .num_chipselect = ARRAY_SIZE(spi_internal_chipselect),
165 static struct gpio_led litekit_leds[] = {
168 .gpio = IOMUX_TO_GPIO(MX31_PIN_COMPARE),
170 .default_state = LEDS_GPIO_DEFSTATE_OFF,
174 .gpio = IOMUX_TO_GPIO(MX31_PIN_CAPTURE),
176 .default_state = LEDS_GPIO_DEFSTATE_OFF,
180 static struct gpio_led_platform_data litekit_led_platform_data = {
181 .leds = litekit_leds,
182 .num_leds = ARRAY_SIZE(litekit_leds),
185 static struct platform_device litekit_led_device = {
189 .platform_data = &litekit_led_platform_data,
193 void __init mx31lite_db_init(void)
195 mxc_iomux_setup_multiple_pins(litekit_db_board_pins,
196 ARRAY_SIZE(litekit_db_board_pins),
197 "development board pins");
198 imx31_add_imx_uart0(&uart_pdata);
199 imx31_add_mxc_mmc(0, &mmc_pdata);
200 imx31_add_spi_imx0(&spi0_pdata);
201 platform_device_register(&litekit_led_device);
202 imx31_add_imx2_wdt(NULL);
203 mxc_register_device(&imx_rtc_device0, NULL);