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