arch/arm/mach-omap2/board-3430sdp.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-3430sdp.c
   3  *
   4  * Copyright (C) 2007 Texas Instruments
   5  *
   6  * Modified from mach-omap2/board-generic.c
   7  *
   8  * Initial code: Syed Mohammed Khasim
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/mtd/mtd.h>
  19 #include <linux/mtd/partitions.h>
  20 #include <linux/delay.h>
  21 #include <linux/workqueue.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/dma.h>
  36 #include <asm/arch/gpmc.h>
  37
  38 #include <asm/io.h>
  39 #include <asm/delay.h>
  40
  41 #define SDP3430_FLASH_CS        0
  42 #define SDP3430_SMC91X_CS       3
  43
  44 static struct mtd_partition sdp3430_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 sdp3430_flash_data = {
  76         .map_name       = "cfi_probe",
  77         .width          = 2,
  78         .parts          = sdp3430_partitions,
  79         .nr_parts       = ARRAY_SIZE(sdp3430_partitions),
  80 };
  81
  82 static struct resource sdp3430_flash_resource = {
  83         .start          = FLASH_BASE,
  84         .end            = FLASH_BASE + SZ_64M - 1,
  85         .flags          = IORESOURCE_MEM,
  86 };
  87
  88 static struct platform_device sdp3430_flash_device = {
  89         .name           = "omapflash",
  90         .id             = 0,
  91         .dev            = {
  92                 .platform_data  = &sdp3430_flash_data,
  93         },
  94         .num_resources  = 1,
  95         .resource       = &sdp3430_flash_resource,
  96 };
  97
  98 static struct resource sdp3430_smc91x_resources[] = {
  99         [0] = {
 100                 .start  = OMAP34XX_ETHR_START,
 101                 .end    = OMAP34XX_ETHR_START + SZ_4K,
 102                 .flags          = IORESOURCE_MEM,
 103         },
 104         [1] = {
 105                 .start          = OMAP_GPIO_IRQ(OMAP34XX_ETHR_GPIO_IRQ),
 106                 .end    = 0,
 107                 .flags          = IORESOURCE_IRQ,
 108         },
 109 };
 110
 111 static struct platform_device sdp3430_smc91x_device = {
 112         .name           = "smc91x",
 113         .id             = -1,
 114         .num_resources  = ARRAY_SIZE(sdp3430_smc91x_resources),
 115         .resource       = sdp3430_smc91x_resources,
 116 };
 117
 118 static struct platform_device *sdp3430_devices[] __initdata = {
 119         &sdp3430_smc91x_device,
 120         &sdp3430_flash_device,
 121 };
 122
 123 static inline void __init sdp3430_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  = SDP3430_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         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 139                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 140                 return;
 141         }
 142
 143         sdp3430_smc91x_resources[0].start = cs_mem_base + 0x0;
 144         sdp3430_smc91x_resources[0].end   = cs_mem_base + 0xf;
 145         udelay(100);
 146
 147         if (omap_request_gpio(OMAP34XX_ETHR_GPIO_IRQ) < 0) {
 148                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 149                         OMAP34XX_ETHR_GPIO_IRQ);
 150                 return;
 151         }
 152         omap_set_gpio_direction(OMAP34XX_ETHR_GPIO_IRQ, 1);
 153 }
 154
 155 static void __init omap_3430sdp_init_irq(void)
 156 {
 157         omap2_init_common_hw();
 158         omap_init_irq();
 159         omap_gpio_init();
 160         sdp3430_init_smc91x();
 161 }
 162
 163 static struct omap_uart_config sdp3430_uart_config __initdata = {
 164         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 165 };
 166
 167 static struct omap_board_config_kernel sdp3430_config[] = {
 168         { OMAP_TAG_UART,        &sdp3430_uart_config },
 169 };
 170
 171 static void __init omap_3430sdp_init(void)
 172 {
 173         platform_add_devices(sdp3430_devices, ARRAY_SIZE(sdp3430_devices));
 174         omap_board_config = sdp3430_config;
 175         omap_board_config_size = ARRAY_SIZE(sdp3430_config);
 176         omap_serial_init();
 177 }
 178
 179 static void __init omap_3430sdp_map_io(void)
 180 {
 181         omap2_map_common_io();
 182 }
 183
 184 MACHINE_START(OMAP_3430SDP, "OMAP3430 3430SDP board")
 185         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 186         .phys_io        = 0x48000000,
 187         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 188         .boot_params    = 0x80000100,
 189         .map_io         = omap_3430sdp_map_io,
 190         .init_irq       = omap_3430sdp_init_irq,
 191         .init_machine   = omap_3430sdp_init,
 192         .timer          = &omap_timer,
 193 MACHINE_END