arch/arm/mach-omap2/board-2430sdp.c

   1 /*
   2  * linux/arch/arm/mach-omap/omap2/board-2430sdp.c
   3  *
   4  * Copyright (C) 2006 Texas Instruments
   5  *
   6  * Modified from mach-omap2/board-generic.c
   7  *
   8  * Initial Code : Based on a patch from Komal Shah and Richard Woodruff
   9  * Updated the Code for 2430 SDP : Syed Mohammed Khasim
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/kernel.h>
  17 #include <linux/init.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/mtd/mtd.h>
  20 #include <linux/mtd/partitions.h>
  21 #include <linux/delay.h>
  22 #include <linux/workqueue.h>
  23 #include <linux/input.h>
  24 #include <linux/err.h>
  25 #include <linux/clk.h>
  26
  27 #include <asm/hardware.h>
  28 #include <asm/mach-types.h>
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/map.h>
  31 #include <asm/mach/flash.h>
  32
  33 #include <asm/arch/gpio.h>
  34 #include <asm/arch/gpioexpander.h>
  35 #include <asm/arch/mux.h>
  36 #include <asm/arch/usb.h>
  37 #include <asm/arch/irda.h>
  38 #include <asm/arch/board.h>
  39 #include <asm/arch/common.h>
  40 #include <asm/arch/keypad.h>
  41 #include <asm/arch/menelaus.h>
  42 #include <asm/arch/dma.h>
  43 #include <asm/arch/gpmc.h>
  44 #include "prcm-regs.h"
  45
  46 #include <asm/io.h>
  47
  48
  49 #define SDP2430_FLASH_CS        0
  50 #define SDP2430_SMC91X_CS       5
  51
  52 static struct mtd_partition sdp2430_partitions[] = {
  53         /* bootloader (U-Boot, etc) in first sector */
  54         {
  55                 .name           = "bootloader",
  56                 .offset         = 0,
  57                 .size           = SZ_256K,
  58                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  59          },
  60         /* bootloader params in the next sector */
  61         {
  62                 .name           = "params",
  63                 .offset         = MTDPART_OFS_APPEND,
  64                 .size           = SZ_128K,
  65                 .mask_flags     = 0,
  66          },
  67         /* kernel */
  68         {
  69                 .name           = "kernel",
  70                 .offset         = MTDPART_OFS_APPEND,
  71                 .size           = SZ_2M,
  72                 .mask_flags     = 0
  73         },
  74         /* file system */
  75         {
  76                 .name           = "filesystem",
  77                 .offset         = MTDPART_OFS_APPEND,
  78                 .size           = MTDPART_SIZ_FULL,
  79                 .mask_flags     = 0
  80         }
  81 };
  82
  83 static struct flash_platform_data sdp2430_flash_data = {
  84         .map_name       = "cfi_probe",
  85         .width          = 2,
  86         .parts          = sdp2430_partitions,
  87         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
  88 };
  89
  90 static struct resource sdp2430_flash_resource = {
  91         .start          = SDP2430_CS0_BASE,
  92         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
  93         .flags          = IORESOURCE_MEM,
  94 };
  95
  96 static struct platform_device sdp2430_flash_device = {
  97         .name           = "omapflash",
  98         .id             = 0,
  99         .dev = {
 100                 .platform_data  = &sdp2430_flash_data,
 101         },
 102         .num_resources  = 1,
 103         .resource       = &sdp2430_flash_resource,
 104 };
 105
 106 static struct resource sdp2430_smc91x_resources[] = {
 107         [0] = {
 108                 .start  = SDP2430_CS0_BASE,
 109                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
 110                 .flags  = IORESOURCE_MEM,
 111         },
 112         [1] = {
 113                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 114                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 115                 .flags  = IORESOURCE_IRQ,
 116         },
 117 };
 118
 119 static struct platform_device sdp2430_smc91x_device = {
 120         .name           = "smc91x",
 121         .id             = -1,
 122         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
 123         .resource       = sdp2430_smc91x_resources,
 124 };
 125
 126 static struct platform_device *sdp2430_devices[] __initdata = {
 127         &sdp2430_smc91x_device,
 128         &sdp2430_flash_device,
 129 };
 130
 131 static inline void __init sdp2430_init_smc91x(void)
 132 {
 133         int eth_cs;
 134         unsigned long cs_mem_base;
 135         unsigned int rate;
 136         struct clk *l3ck;
 137
 138         eth_cs = SDP2430_SMC91X_CS;
 139
 140         l3ck = clk_get(NULL, "core_l3_ck");
 141         if (IS_ERR(l3ck))
 142                 rate = 100000000;
 143         else
 144                 rate = clk_get_rate(l3ck);
 145
 146         /* Make sure CS1 timings are correct, for 2430 always muxed */
 147         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 148
 149         if (rate >= 160000000) {
 150                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 151                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 152                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 153                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 154                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 155         } else if (rate >= 130000000) {
 156                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 157                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 158                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 159                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 160                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 161         } else { /* rate = 100000000 */
 162                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 163                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 164                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 165                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 166                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 167         }
 168
 169         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 170                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 171                 return;
 172         }
 173
 174         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
 175         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
 176         udelay(100);
 177
 178         if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
 179                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 180                         OMAP24XX_ETHR_GPIO_IRQ);
 181                 gpmc_cs_free(eth_cs);
 182                 return;
 183         }
 184         omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
 185
 186 }
 187
 188 static void __init omap_2430sdp_init_irq(void)
 189 {
 190         omap2_init_common_hw();
 191         omap_init_irq();
 192         omap_gpio_init();
 193         sdp2430_init_smc91x();
 194 }
 195
 196 static struct omap_uart_config sdp2430_uart_config __initdata = {
 197         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 198 };
 199
 200 static struct omap_board_config_kernel sdp2430_config[] = {
 201         {OMAP_TAG_UART, &sdp2430_uart_config},
 202 };
 203
 204 static void __init omap_2430sdp_init(void)
 205 {
 206         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 207         omap_board_config = sdp2430_config;
 208         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 209         omap_serial_init();
 210 }
 211
 212 static void __init omap_2430sdp_map_io(void)
 213 {
 214         omap2_map_common_io();
 215 }
 216
 217 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
 218         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 219         .phys_io        = 0x48000000,
 220         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 221         .boot_params    = 0x80000100,
 222         .map_io         = omap_2430sdp_map_io,
 223         .init_irq       = omap_2430sdp_init_irq,
 224         .init_machine   = omap_2430sdp_init,
 225         .timer          = &omap_timer,
 226 MACHINE_END