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   1 /*
   2  * linux/arch/arm/mach-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/err.h>
  23 #include <linux/clk.h>
  24
  25 #include <asm/hardware.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/map.h>
  29 #include <asm/mach/flash.h>
  30
  31 #include <asm/arch/gpio.h>
  32 #include <asm/arch/mux.h>
  33 #include <asm/arch/board.h>
  34 #include <asm/arch/common.h>
  35 #include <asm/arch/gpmc.h>
  36
  37 #include <asm/io.h>
  38
  39
  40 #define SDP2430_FLASH_CS        0
  41 #define SDP2430_SMC91X_CS       5
  42
  43 static struct mtd_partition sdp2430_partitions[] = {
  44         /* bootloader (U-Boot, etc) in first sector */
  45         {
  46                 .name           = "bootloader",
  47                 .offset         = 0,
  48                 .size           = SZ_256K,
  49                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  50          },
  51         /* bootloader params in the next sector */
  52         {
  53                 .name           = "params",
  54                 .offset         = MTDPART_OFS_APPEND,
  55                 .size           = SZ_128K,
  56                 .mask_flags     = 0,
  57          },
  58         /* kernel */
  59         {
  60                 .name           = "kernel",
  61                 .offset         = MTDPART_OFS_APPEND,
  62                 .size           = SZ_2M,
  63                 .mask_flags     = 0
  64         },
  65         /* file system */
  66         {
  67                 .name           = "filesystem",
  68                 .offset         = MTDPART_OFS_APPEND,
  69                 .size           = MTDPART_SIZ_FULL,
  70                 .mask_flags     = 0
  71         }
  72 };
  73
  74 static struct flash_platform_data sdp2430_flash_data = {
  75         .map_name       = "cfi_probe",
  76         .width          = 2,
  77         .parts          = sdp2430_partitions,
  78         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
  79 };
  80
  81 static struct resource sdp2430_flash_resource = {
  82         .start          = SDP2430_CS0_BASE,
  83         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
  84         .flags          = IORESOURCE_MEM,
  85 };
  86
  87 static struct platform_device sdp2430_flash_device = {
  88         .name           = "omapflash",
  89         .id             = 0,
  90         .dev = {
  91                 .platform_data  = &sdp2430_flash_data,
  92         },
  93         .num_resources  = 1,
  94         .resource       = &sdp2430_flash_resource,
  95 };
  96
  97 static struct resource sdp2430_smc91x_resources[] = {
  98         [0] = {
  99                 .start  = SDP2430_CS0_BASE,
 100                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
 101                 .flags  = IORESOURCE_MEM,
 102         },
 103         [1] = {
 104                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 105                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 106                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 107         },
 108 };
 109
 110 static struct platform_device sdp2430_smc91x_device = {
 111         .name           = "smc91x",
 112         .id             = -1,
 113         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
 114         .resource       = sdp2430_smc91x_resources,
 115 };
 116
 117 static struct platform_device *sdp2430_devices[] __initdata = {
 118         &sdp2430_smc91x_device,
 119         &sdp2430_flash_device,
 120 };
 121
 122 static inline void __init sdp2430_init_smc91x(void)
 123 {
 124         int eth_cs;
 125         unsigned long cs_mem_base;
 126         unsigned int rate;
 127         struct clk *gpmc_fck;
 128
 129         eth_cs = SDP2430_SMC91X_CS;
 130
 131         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 132         if (IS_ERR(gpmc_fck)) {
 133                 WARN_ON(1);
 134                 return;
 135         }
 136
 137         clk_enable(gpmc_fck);
 138         rate = clk_get_rate(gpmc_fck);
 139
 140         /* Make sure CS1 timings are correct, for 2430 always muxed */
 141         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 142
 143         if (rate >= 160000000) {
 144                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 145                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 146                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 147                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 148                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 149         } else if (rate >= 130000000) {
 150                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 151                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 152                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 153                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 154                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 155         } else { /* rate = 100000000 */
 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, 0x031A1F1F);
 160                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 161         }
 162
 163         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 164                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 165                 goto out;
 166         }
 167
 168         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
 169         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
 170         udelay(100);
 171
 172         if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
 173                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 174                         OMAP24XX_ETHR_GPIO_IRQ);
 175                 gpmc_cs_free(eth_cs);
 176                 goto out;
 177         }
 178         omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
 179
 180 out:
 181         clk_disable(gpmc_fck);
 182         clk_put(gpmc_fck);
 183 }
 184
 185 static void __init omap_2430sdp_init_irq(void)
 186 {
 187         omap2_init_common_hw();
 188         omap_init_irq();
 189         omap_gpio_init();
 190         sdp2430_init_smc91x();
 191 }
 192
 193 static struct omap_uart_config sdp2430_uart_config __initdata = {
 194         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 195 };
 196
 197 static struct omap_board_config_kernel sdp2430_config[] = {
 198         {OMAP_TAG_UART, &sdp2430_uart_config},
 199 };
 200
 201 static void __init omap_2430sdp_init(void)
 202 {
 203         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 204         omap_board_config = sdp2430_config;
 205         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 206         omap_serial_init();
 207 }
 208
 209 static void __init omap_2430sdp_map_io(void)
 210 {
 211         omap2_set_globals_243x();
 212         omap2_map_common_io();
 213 }
 214
 215 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
 216         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 217         .phys_io        = 0x48000000,
 218         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 219         .boot_params    = 0x80000100,
 220         .map_io         = omap_2430sdp_map_io,
 221         .init_irq       = omap_2430sdp_init_irq,
 222         .init_machine   = omap_2430sdp_init,
 223         .timer          = &omap_timer,
 224 MACHINE_END