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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 #include "prcm-regs.h"
  37
  38 #include <asm/io.h>
  39
  40
  41 #define SDP2430_FLASH_CS        0
  42 #define SDP2430_SMC91X_CS       5
  43
  44 static struct mtd_partition sdp2430_partitions[] = {
  45         /* bootloader (U-Boot, etc) in first sector */
  46         {
  47                 .name           = "bootloader",
  48                 .offset         = 0,
  49                 .size           = SZ_256K,
  50                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  51          },
  52         /* bootloader params in the next sector */
  53         {
  54                 .name           = "params",
  55                 .offset         = MTDPART_OFS_APPEND,
  56                 .size           = SZ_128K,
  57                 .mask_flags     = 0,
  58          },
  59         /* kernel */
  60         {
  61                 .name           = "kernel",
  62                 .offset         = MTDPART_OFS_APPEND,
  63                 .size           = SZ_2M,
  64                 .mask_flags     = 0
  65         },
  66         /* file system */
  67         {
  68                 .name           = "filesystem",
  69                 .offset         = MTDPART_OFS_APPEND,
  70                 .size           = MTDPART_SIZ_FULL,
  71                 .mask_flags     = 0
  72         }
  73 };
  74
  75 static struct flash_platform_data sdp2430_flash_data = {
  76         .map_name       = "cfi_probe",
  77         .width          = 2,
  78         .parts          = sdp2430_partitions,
  79         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
  80 };
  81
  82 static struct resource sdp2430_flash_resource = {
  83         .start          = SDP2430_CS0_BASE,
  84         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
  85         .flags          = IORESOURCE_MEM,
  86 };
  87
  88 static struct platform_device sdp2430_flash_device = {
  89         .name           = "omapflash",
  90         .id             = 0,
  91         .dev = {
  92                 .platform_data  = &sdp2430_flash_data,
  93         },
  94         .num_resources  = 1,
  95         .resource       = &sdp2430_flash_resource,
  96 };
  97
  98 static struct resource sdp2430_smc91x_resources[] = {
  99         [0] = {
 100                 .start  = SDP2430_CS0_BASE,
 101                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
 102                 .flags  = IORESOURCE_MEM,
 103         },
 104         [1] = {
 105                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 106                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 107                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 108         },
 109 };
 110
 111 static struct platform_device sdp2430_smc91x_device = {
 112         .name           = "smc91x",
 113         .id             = -1,
 114         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
 115         .resource       = sdp2430_smc91x_resources,
 116 };
 117
 118 static struct platform_device *sdp2430_devices[] __initdata = {
 119         &sdp2430_smc91x_device,
 120         &sdp2430_flash_device,
 121 };
 122
 123 static inline void __init sdp2430_init_smc91x(void)
 124 {
 125         int eth_cs;
 126         unsigned long cs_mem_base;
 127         unsigned int rate;
 128         struct clk *l3ck;
 129
 130         eth_cs = SDP2430_SMC91X_CS;
 131
 132         l3ck = clk_get(NULL, "core_l3_ck");
 133         if (IS_ERR(l3ck))
 134                 rate = 100000000;
 135         else
 136                 rate = clk_get_rate(l3ck);
 137
 138         /* Make sure CS1 timings are correct, for 2430 always muxed */
 139         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 140
 141         if (rate >= 160000000) {
 142                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 143                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 144                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 145                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 146                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 147         } else if (rate >= 130000000) {
 148                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 149                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 150                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 151                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 152                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 153         } else { /* rate = 100000000 */
 154                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 155                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 156                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 157                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 158                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 159         }
 160
 161         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 162                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 163                 return;
 164         }
 165
 166         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
 167         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
 168         udelay(100);
 169
 170         if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
 171                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 172                         OMAP24XX_ETHR_GPIO_IRQ);
 173                 gpmc_cs_free(eth_cs);
 174                 return;
 175         }
 176         omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
 177
 178 }
 179
 180 static void __init omap_2430sdp_init_irq(void)
 181 {
 182         omap2_init_common_hw();
 183         omap_init_irq();
 184         omap_gpio_init();
 185         sdp2430_init_smc91x();
 186 }
 187
 188 static struct omap_uart_config sdp2430_uart_config __initdata = {
 189         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 190 };
 191
 192 static struct omap_board_config_kernel sdp2430_config[] = {
 193         {OMAP_TAG_UART, &sdp2430_uart_config},
 194 };
 195
 196 static void __init omap_2430sdp_init(void)
 197 {
 198         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 199         omap_board_config = sdp2430_config;
 200         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 201         omap_serial_init();
 202 }
 203
 204 static void __init omap_2430sdp_map_io(void)
 205 {
 206         omap2_map_common_io();
 207 }
 208
 209 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
 210         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 211         .phys_io        = 0x48000000,
 212         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 213         .boot_params    = 0x80000100,
 214         .map_io         = omap_2430sdp_map_io,
 215         .init_irq       = omap_2430sdp_init_irq,
 216         .init_machine   = omap_2430sdp_init,
 217         .timer          = &omap_timer,
 218 MACHINE_END