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.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include <linux/kernel.h>
28 #include <linux/types.h>
29 #include <linux/init.h>
30 #include <linux/gpio.h>
31 #include <linux/leds.h>
32 #include <linux/platform_device.h>
34 #include <asm/mach-types.h>
35 #include <asm/mach/arch.h>
36 #include <asm/mach/map.h>
38 #include <mach/hardware.h>
39 #include <mach/common.h>
40 #include <mach/imx-uart.h>
41 #include <mach/iomux-mx3.h>
42 #include <mach/board-mx31lite.h>
49 * This file contains board-specific initialization routines for the
50 * LogicPD i.MX31 SOM-LV development board, aka 'LiteKit'.
51 * If you design an own baseboard for the module, use this file as base
55 static unsigned int litekit_db_board_pins[] __initdata = {
62 MX31_PIN_CSPI1_SCLK__SCLK,
63 MX31_PIN_CSPI1_MOSI__MOSI,
64 MX31_PIN_CSPI1_MISO__MISO,
65 MX31_PIN_CSPI1_SPI_RDY__SPI_RDY,
66 MX31_PIN_CSPI1_SS0__SS0,
67 MX31_PIN_CSPI1_SS1__SS1,
68 MX31_PIN_CSPI1_SS2__SS2,
70 MX31_PIN_SD1_DATA0__SD1_DATA0,
71 MX31_PIN_SD1_DATA1__SD1_DATA1,
72 MX31_PIN_SD1_DATA2__SD1_DATA2,
73 MX31_PIN_SD1_DATA3__SD1_DATA3,
74 MX31_PIN_SD1_CLK__SD1_CLK,
75 MX31_PIN_SD1_CMD__SD1_CMD,
79 static struct imxuart_platform_data uart_pdata __initdata = {
80 .flags = IMXUART_HAVE_RTSCTS,
85 static int gpio_det, gpio_wp;
87 #define MMC_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
90 static int mxc_mmc1_get_ro(struct device *dev)
92 return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_GPIO1_6));
95 static int mxc_mmc1_init(struct device *dev,
96 irq_handler_t detect_irq, void *data)
100 gpio_det = IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1);
101 gpio_wp = IOMUX_TO_GPIO(MX31_PIN_GPIO1_6);
103 mxc_iomux_set_pad(MX31_PIN_SD1_DATA0,
104 MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
105 mxc_iomux_set_pad(MX31_PIN_SD1_DATA1,
106 MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
107 mxc_iomux_set_pad(MX31_PIN_SD1_DATA2,
108 MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
109 mxc_iomux_set_pad(MX31_PIN_SD1_DATA3,
110 MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
111 mxc_iomux_set_pad(MX31_PIN_SD1_CMD,
112 MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
113 mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG);
115 ret = gpio_request(gpio_det, "MMC detect");
119 ret = gpio_request(gpio_wp, "MMC w/p");
123 gpio_direction_input(gpio_det);
124 gpio_direction_input(gpio_wp);
126 ret = request_irq(IOMUX_TO_IRQ(MX31_PIN_DCD_DCE1), detect_irq,
127 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
143 static void mxc_mmc1_exit(struct device *dev, void *data)
147 free_irq(IOMUX_TO_IRQ(MX31_PIN_DCD_DCE1), data);
150 static struct imxmmc_platform_data mmc_pdata = {
151 .get_ro = mxc_mmc1_get_ro,
152 .init = mxc_mmc1_init,
153 .exit = mxc_mmc1_exit,
158 static int spi_internal_chipselect[] = {
164 static struct spi_imx_master spi0_pdata = {
165 .chipselect = spi_internal_chipselect,
166 .num_chipselect = ARRAY_SIZE(spi_internal_chipselect),
171 static struct gpio_led litekit_leds[] = {
174 .gpio = IOMUX_TO_GPIO(MX31_PIN_COMPARE),
176 .default_state = LEDS_GPIO_DEFSTATE_OFF,
180 .gpio = IOMUX_TO_GPIO(MX31_PIN_CAPTURE),
182 .default_state = LEDS_GPIO_DEFSTATE_OFF,
186 static struct gpio_led_platform_data litekit_led_platform_data = {
187 .leds = litekit_leds,
188 .num_leds = ARRAY_SIZE(litekit_leds),
191 static struct platform_device litekit_led_device = {
195 .platform_data = &litekit_led_platform_data,
199 void __init mx31lite_db_init(void)
201 mxc_iomux_setup_multiple_pins(litekit_db_board_pins,
202 ARRAY_SIZE(litekit_db_board_pins),
203 "development board pins");
204 mxc_register_device(&mxc_uart_device0, &uart_pdata);
205 mxc_register_device(&mxcsdhc_device0, &mmc_pdata);
206 mxc_register_device(&mxc_spi_device0, &spi0_pdata);
207 platform_device_register(&litekit_led_device);
208 mxc_register_device(&imx_wdt_device0, NULL);