1/* 2 * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved. 3 */ 4 5/* 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 16 * You should have received a copy of the GNU General Public License along 17 * with this program; if not, write to the Free Software Foundation, Inc., 18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 19 */ 20 21#include <linux/init.h> 22#include <linux/clk.h> 23#include <linux/delay.h> 24#include <linux/gpio.h> 25#include <linux/smsc911x.h> 26#include <linux/regulator/machine.h> 27#include <linux/regulator/fixed.h> 28 29#include <mach/common.h> 30#include <mach/hardware.h> 31#include <mach/iomux-mx53.h> 32 33#include <asm/mach-types.h> 34#include <asm/mach/arch.h> 35#include <asm/mach/time.h> 36 37#include "devices-imx53.h" 38 39#define ARD_ETHERNET_INT_B IMX_GPIO_NR(2, 31) 40#define ARD_SD1_CD IMX_GPIO_NR(1, 1) 41#define ARD_SD1_WP IMX_GPIO_NR(1, 9) 42#define ARD_I2CPORTEXP_B IMX_GPIO_NR(2, 3) 43#define ARD_VOLUMEDOWN IMX_GPIO_NR(4, 0) 44#define ARD_HOME IMX_GPIO_NR(5, 10) 45#define ARD_BACK IMX_GPIO_NR(5, 11) 46#define ARD_PROG IMX_GPIO_NR(5, 12) 47#define ARD_VOLUMEUP IMX_GPIO_NR(5, 13) 48 49static iomux_v3_cfg_t mx53_ard_pads[] = { 50 /* UART1 */ 51 MX53_PAD_PATA_DIOW__UART1_TXD_MUX, 52 MX53_PAD_PATA_DMACK__UART1_RXD_MUX, 53 /* WEIM for CS1 */ 54 MX53_PAD_EIM_EB3__GPIO2_31, /* ETHERNET_INT_B */ 55 MX53_PAD_EIM_D16__EMI_WEIM_D_16, 56 MX53_PAD_EIM_D17__EMI_WEIM_D_17, 57 MX53_PAD_EIM_D18__EMI_WEIM_D_18, 58 MX53_PAD_EIM_D19__EMI_WEIM_D_19, 59 MX53_PAD_EIM_D20__EMI_WEIM_D_20, 60 MX53_PAD_EIM_D21__EMI_WEIM_D_21, 61 MX53_PAD_EIM_D22__EMI_WEIM_D_22, 62 MX53_PAD_EIM_D23__EMI_WEIM_D_23, 63 MX53_PAD_EIM_D24__EMI_WEIM_D_24, 64 MX53_PAD_EIM_D25__EMI_WEIM_D_25, 65 MX53_PAD_EIM_D26__EMI_WEIM_D_26, 66 MX53_PAD_EIM_D27__EMI_WEIM_D_27, 67 MX53_PAD_EIM_D28__EMI_WEIM_D_28, 68 MX53_PAD_EIM_D29__EMI_WEIM_D_29, 69 MX53_PAD_EIM_D30__EMI_WEIM_D_30, 70 MX53_PAD_EIM_D31__EMI_WEIM_D_31, 71 MX53_PAD_EIM_DA0__EMI_NAND_WEIM_DA_0, 72 MX53_PAD_EIM_DA1__EMI_NAND_WEIM_DA_1, 73 MX53_PAD_EIM_DA2__EMI_NAND_WEIM_DA_2, 74 MX53_PAD_EIM_DA3__EMI_NAND_WEIM_DA_3, 75 MX53_PAD_EIM_DA4__EMI_NAND_WEIM_DA_4, 76 MX53_PAD_EIM_DA5__EMI_NAND_WEIM_DA_5, 77 MX53_PAD_EIM_DA6__EMI_NAND_WEIM_DA_6, 78 MX53_PAD_EIM_OE__EMI_WEIM_OE, 79 MX53_PAD_EIM_RW__EMI_WEIM_RW, 80 MX53_PAD_EIM_CS1__EMI_WEIM_CS_1, 81 /* SDHC1 */ 82 MX53_PAD_SD1_CMD__ESDHC1_CMD, 83 MX53_PAD_SD1_CLK__ESDHC1_CLK, 84 MX53_PAD_SD1_DATA0__ESDHC1_DAT0, 85 MX53_PAD_SD1_DATA1__ESDHC1_DAT1, 86 MX53_PAD_SD1_DATA2__ESDHC1_DAT2, 87 MX53_PAD_SD1_DATA3__ESDHC1_DAT3, 88 MX53_PAD_PATA_DATA8__ESDHC1_DAT4, 89 MX53_PAD_PATA_DATA9__ESDHC1_DAT5, 90 MX53_PAD_PATA_DATA10__ESDHC1_DAT6, 91 MX53_PAD_PATA_DATA11__ESDHC1_DAT7, 92 MX53_PAD_GPIO_1__GPIO1_1, 93 MX53_PAD_GPIO_9__GPIO1_9, 94 /* I2C2 */ 95 MX53_PAD_EIM_EB2__I2C2_SCL, 96 MX53_PAD_KEY_ROW3__I2C2_SDA, 97 /* I2C3 */ 98 MX53_PAD_GPIO_3__I2C3_SCL, 99 MX53_PAD_GPIO_16__I2C3_SDA, 100 /* GPIO */ 101 MX53_PAD_DISP0_DAT16__GPIO5_10, /* home */ 102 MX53_PAD_DISP0_DAT17__GPIO5_11, /* back */ 103 MX53_PAD_DISP0_DAT18__GPIO5_12, /* prog */ 104 MX53_PAD_DISP0_DAT19__GPIO5_13, /* vol up */ 105 MX53_PAD_GPIO_10__GPIO4_0, /* vol down */ 106}; 107 108#define GPIO_BUTTON(gpio_num, ev_code, act_low, descr, wake) \ 109{ \ 110 .gpio = gpio_num, \ 111 .type = EV_KEY, \ 112 .code = ev_code, \ 113 .active_low = act_low, \ 114 .desc = "btn " descr, \ 115 .wakeup = wake, \ 116} 117 118static struct gpio_keys_button ard_buttons[] = { 119 GPIO_BUTTON(ARD_HOME, KEY_HOME, 1, "home", 0), 120 GPIO_BUTTON(ARD_BACK, KEY_BACK, 1, "back", 0), 121 GPIO_BUTTON(ARD_PROG, KEY_PROGRAM, 1, "program", 0), 122 GPIO_BUTTON(ARD_VOLUMEUP, KEY_VOLUMEUP, 1, "volume-up", 0), 123 GPIO_BUTTON(ARD_VOLUMEDOWN, KEY_VOLUMEDOWN, 1, "volume-down", 0), 124}; 125 126static const struct gpio_keys_platform_data ard_button_data __initconst = { 127 .buttons = ard_buttons, 128 .nbuttons = ARRAY_SIZE(ard_buttons), 129}; 130 131static struct resource ard_smsc911x_resources[] = { 132 { 133 .start = MX53_CS1_64MB_BASE_ADDR, 134 .end = MX53_CS1_64MB_BASE_ADDR + SZ_32M - 1, 135 .flags = IORESOURCE_MEM, 136 }, 137 { 138 .start = IMX_GPIO_TO_IRQ(ARD_ETHERNET_INT_B), 139 .end = IMX_GPIO_TO_IRQ(ARD_ETHERNET_INT_B), 140 .flags = IORESOURCE_IRQ, 141 }, 142}; 143 144struct smsc911x_platform_config ard_smsc911x_config = { 145 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, 146 .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL, 147 .flags = SMSC911X_USE_32BIT, 148}; 149 150static struct platform_device ard_smsc_lan9220_device = { 151 .name = "smsc911x", 152 .id = -1, 153 .num_resources = ARRAY_SIZE(ard_smsc911x_resources), 154 .resource = ard_smsc911x_resources, 155 .dev = { 156 .platform_data = &ard_smsc911x_config, 157 }, 158}; 159 160static const struct esdhc_platform_data mx53_ard_sd1_data __initconst = { 161 .cd_gpio = ARD_SD1_CD, 162 .wp_gpio = ARD_SD1_WP, 163}; 164 165static struct imxi2c_platform_data mx53_ard_i2c2_data = { 166 .bitrate = 50000, 167}; 168 169static struct imxi2c_platform_data mx53_ard_i2c3_data = { 170 .bitrate = 400000, 171}; 172 173static void __init mx53_ard_io_init(void) 174{ 175 gpio_request(ARD_ETHERNET_INT_B, "eth-int-b"); 176 gpio_direction_input(ARD_ETHERNET_INT_B); 177 178 gpio_request(ARD_I2CPORTEXP_B, "i2cptexp-rst"); 179 gpio_direction_output(ARD_I2CPORTEXP_B, 1); 180} 181 182/* Config CS1 settings for ethernet controller */ 183static int weim_cs_config(void) 184{ 185 u32 reg; 186 void __iomem *weim_base, *iomuxc_base; 187 188 weim_base = ioremap(MX53_WEIM_BASE_ADDR, SZ_4K); 189 if (!weim_base) 190 return -ENOMEM; 191 192 iomuxc_base = ioremap(MX53_IOMUXC_BASE_ADDR, SZ_4K); 193 if (!iomuxc_base) { 194 iounmap(weim_base); 195 return -ENOMEM; 196 } 197 198 /* CS1 timings for LAN9220 */ 199 writel(0x20001, (weim_base + 0x18)); 200 writel(0x0, (weim_base + 0x1C)); 201 writel(0x16000202, (weim_base + 0x20)); 202 writel(0x00000002, (weim_base + 0x24)); 203 writel(0x16002082, (weim_base + 0x28)); 204 writel(0x00000000, (weim_base + 0x2C)); 205 writel(0x00000000, (weim_base + 0x90)); 206 207 /* specify 64 MB on CS1 and CS0 on GPR1 */ 208 reg = readl(iomuxc_base + 0x4); 209 reg &= ~0x3F; 210 reg |= 0x1B; 211 writel(reg, (iomuxc_base + 0x4)); 212 213 iounmap(iomuxc_base); 214 iounmap(weim_base); 215 216 return 0; 217} 218 219static struct regulator_consumer_supply dummy_supplies[] = { 220 REGULATOR_SUPPLY("vdd33a", "smsc911x"), 221 REGULATOR_SUPPLY("vddvario", "smsc911x"), 222}; 223 224void __init imx53_ard_common_init(void) 225{ 226 mxc_iomux_v3_setup_multiple_pads(mx53_ard_pads, 227 ARRAY_SIZE(mx53_ard_pads)); 228 weim_cs_config(); 229} 230 231static struct platform_device *devices[] __initdata = { 232 &ard_smsc_lan9220_device, 233}; 234 235static void __init mx53_ard_board_init(void) 236{ 237 imx53_soc_init(); 238 imx53_add_imx_uart(0, NULL); 239 240 imx53_ard_common_init(); 241 mx53_ard_io_init(); 242 regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies)); 243 platform_add_devices(devices, ARRAY_SIZE(devices)); 244 245 imx53_add_sdhci_esdhc_imx(0, &mx53_ard_sd1_data); 246 imx53_add_imx2_wdt(0, NULL); 247 imx53_add_imx_i2c(1, &mx53_ard_i2c2_data); 248 imx53_add_imx_i2c(2, &mx53_ard_i2c3_data); 249 imx_add_gpio_keys(&ard_button_data); 250 imx53_add_ahci_imx(); 251} 252 253static void __init mx53_ard_timer_init(void) 254{ 255 mx53_clocks_init(32768, 24000000, 22579200, 0); 256} 257 258static struct sys_timer mx53_ard_timer = { 259 .init = mx53_ard_timer_init, 260}; 261 262MACHINE_START(MX53_ARD, "Freescale MX53 ARD Board") 263 .map_io = mx53_map_io, 264 .init_early = imx53_init_early, 265 .init_irq = mx53_init_irq, 266 .handle_irq = imx53_handle_irq, 267 .timer = &mx53_ard_timer, 268 .init_machine = mx53_ard_board_init, 269 .restart = mxc_restart, 270MACHINE_END 271