arch/arm/mach-mx2/pcm038.c

   1 /*
   2  * Copyright 2007 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix
   3  * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  17  * MA 02110-1301, USA.
  18  */
  19
  20 #include <linux/platform_device.h>
  21 #include <linux/mtd/physmap.h>
  22 #include <linux/mtd/plat-ram.h>
  23 #include <linux/io.h>
  24 #include <asm/mach/arch.h>
  25 #include <asm/mach-types.h>
  26 #include <mach/common.h>
  27 #include <mach/hardware.h>
  28 #include <mach/iomux.h>
  29 #include <asm/mach/time.h>
  30 #include <mach/imx-uart.h>
  31 #include <mach/board-pcm038.h>
  32 #include <mach/mxc_nand.h>
  33
  34 #include "devices.h"
  35
  36 /*
  37  * Phytec's PCM038 comes with 2MiB battery buffered SRAM,
  38  * 16 bit width
  39  */
  40
  41 static struct platdata_mtd_ram pcm038_sram_data = {
  42         .bankwidth = 2,
  43 };
  44
  45 static struct resource pcm038_sram_resource = {
  46         .start = CS1_BASE_ADDR,
  47         .end   = CS1_BASE_ADDR + 512 * 1024 - 1,
  48         .flags = IORESOURCE_MEM,
  49 };
  50
  51 static struct platform_device pcm038_sram_mtd_device = {
  52         .name = "mtd-ram",
  53         .id = 0,
  54         .dev = {
  55                 .platform_data = &pcm038_sram_data,
  56         },
  57         .num_resources = 1,
  58         .resource = &pcm038_sram_resource,
  59 };
  60
  61 /*
  62  * Phytec's phyCORE-i.MX27 comes with 32MiB flash,
  63  * 16 bit width
  64  */
  65 static struct physmap_flash_data pcm038_flash_data = {
  66         .width = 2,
  67 };
  68
  69 static struct resource pcm038_flash_resource = {
  70         .start = 0xc0000000,
  71         .end   = 0xc1ffffff,
  72         .flags = IORESOURCE_MEM,
  73 };
  74
  75 static struct platform_device pcm038_nor_mtd_device = {
  76         .name = "physmap-flash",
  77         .id = 0,
  78         .dev = {
  79                 .platform_data = &pcm038_flash_data,
  80         },
  81         .num_resources = 1,
  82         .resource = &pcm038_flash_resource,
  83 };
  84
  85 static int mxc_uart0_pins[] = {
  86         PE12_PF_UART1_TXD,
  87         PE13_PF_UART1_RXD,
  88         PE14_PF_UART1_CTS,
  89         PE15_PF_UART1_RTS
  90 };
  91
  92 static int uart_mxc_port0_init(struct platform_device *pdev)
  93 {
  94         return mxc_gpio_setup_multiple_pins(mxc_uart0_pins,
  95                         ARRAY_SIZE(mxc_uart0_pins), "UART0");
  96 }
  97
  98 static int uart_mxc_port0_exit(struct platform_device *pdev)
  99 {
 100         mxc_gpio_release_multiple_pins(mxc_uart0_pins,
 101                         ARRAY_SIZE(mxc_uart0_pins));
 102         return 0;
 103 }
 104
 105 static int mxc_uart1_pins[] = {
 106         PE3_PF_UART2_CTS,
 107         PE4_PF_UART2_RTS,
 108         PE6_PF_UART2_TXD,
 109         PE7_PF_UART2_RXD
 110 };
 111
 112 static int uart_mxc_port1_init(struct platform_device *pdev)
 113 {
 114         return mxc_gpio_setup_multiple_pins(mxc_uart1_pins,
 115                         ARRAY_SIZE(mxc_uart1_pins), "UART1");
 116 }
 117
 118 static int uart_mxc_port1_exit(struct platform_device *pdev)
 119 {
 120         mxc_gpio_release_multiple_pins(mxc_uart1_pins,
 121                         ARRAY_SIZE(mxc_uart1_pins));
 122         return 0;
 123 }
 124
 125 static int mxc_uart2_pins[] = { PE10_PF_UART3_CTS,
 126                                 PE9_PF_UART3_RXD,
 127                                 PE10_PF_UART3_CTS,
 128                                 PE9_PF_UART3_RXD };
 129
 130 static int uart_mxc_port2_init(struct platform_device *pdev)
 131 {
 132         return mxc_gpio_setup_multiple_pins(mxc_uart2_pins,
 133                         ARRAY_SIZE(mxc_uart2_pins), "UART2");
 134 }
 135
 136 static int uart_mxc_port2_exit(struct platform_device *pdev)
 137 {
 138         mxc_gpio_release_multiple_pins(mxc_uart2_pins,
 139                         ARRAY_SIZE(mxc_uart2_pins));
 140         return 0;
 141 }
 142
 143 static struct imxuart_platform_data uart_pdata[] = {
 144         {
 145                 .init = uart_mxc_port0_init,
 146                 .exit = uart_mxc_port0_exit,
 147                 .flags = IMXUART_HAVE_RTSCTS,
 148         }, {
 149                 .init = uart_mxc_port1_init,
 150                 .exit = uart_mxc_port1_exit,
 151                 .flags = IMXUART_HAVE_RTSCTS,
 152         }, {
 153                 .init = uart_mxc_port2_init,
 154                 .exit = uart_mxc_port2_exit,
 155                 .flags = IMXUART_HAVE_RTSCTS,
 156         },
 157 };
 158
 159 static int mxc_fec_pins[] = {
 160         PD0_AIN_FEC_TXD0,
 161         PD1_AIN_FEC_TXD1,
 162         PD2_AIN_FEC_TXD2,
 163         PD3_AIN_FEC_TXD3,
 164         PD4_AOUT_FEC_RX_ER,
 165         PD5_AOUT_FEC_RXD1,
 166         PD6_AOUT_FEC_RXD2,
 167         PD7_AOUT_FEC_RXD3,
 168         PD8_AF_FEC_MDIO,
 169         PD9_AIN_FEC_MDC,
 170         PD10_AOUT_FEC_CRS,
 171         PD11_AOUT_FEC_TX_CLK,
 172         PD12_AOUT_FEC_RXD0,
 173         PD13_AOUT_FEC_RX_DV,
 174         PD14_AOUT_FEC_RX_CLK,
 175         PD15_AOUT_FEC_COL,
 176         PD16_AIN_FEC_TX_ER,
 177         PF23_AIN_FEC_TX_EN
 178 };
 179
 180 static void gpio_fec_active(void)
 181 {
 182         mxc_gpio_setup_multiple_pins(mxc_fec_pins,
 183                         ARRAY_SIZE(mxc_fec_pins), "FEC");
 184 }
 185
 186 static void gpio_fec_inactive(void)
 187 {
 188         mxc_gpio_release_multiple_pins(mxc_fec_pins,
 189                         ARRAY_SIZE(mxc_fec_pins));
 190 }
 191
 192 static struct mxc_nand_platform_data pcm038_nand_board_info = {
 193         .width = 1,
 194         .hw_ecc = 1,
 195 };
 196
 197 static struct platform_device *platform_devices[] __initdata = {
 198         &pcm038_nor_mtd_device,
 199         &mxc_w1_master_device,
 200         &pcm038_sram_mtd_device,
 201 };
 202
 203 /* On pcm038 there's a sram attached to CS1, we enable the chipselect here and
 204  * setup other stuffs to access the sram. */
 205 static void __init pcm038_init_sram(void)
 206 {
 207         __raw_writel(0x0000d843, CSCR_U(1));
 208         __raw_writel(0x22252521, CSCR_L(1));
 209         __raw_writel(0x22220a00, CSCR_A(1));
 210 }
 211
 212 static void __init pcm038_init(void)
 213 {
 214         gpio_fec_active();
 215         pcm038_init_sram();
 216
 217         mxc_register_device(&mxc_uart_device0, &uart_pdata[0]);
 218         mxc_register_device(&mxc_uart_device1, &uart_pdata[1]);
 219         mxc_register_device(&mxc_uart_device2, &uart_pdata[2]);
 220
 221         mxc_gpio_mode(PE16_AF_OWIRE);
 222         mxc_register_device(&mxc_nand_device, &pcm038_nand_board_info);
 223
 224         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 225
 226 #ifdef CONFIG_MACH_PCM970_BASEBOARD
 227         pcm970_baseboard_init();
 228 #endif
 229 }
 230
 231 static void __init pcm038_timer_init(void)
 232 {
 233         mx27_clocks_init(26000000);
 234 }
 235
 236 static struct sys_timer pcm038_timer = {
 237         .init = pcm038_timer_init,
 238 };
 239
 240 MACHINE_START(PCM038, "phyCORE-i.MX27")
 241         .phys_io        = AIPI_BASE_ADDR,
 242         .io_pg_offst    = ((AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 243         .boot_params    = PHYS_OFFSET + 0x100,
 244         .map_io         = mxc_map_io,
 245         .init_irq       = mxc_init_irq,
 246         .init_machine   = pcm038_init,
 247         .timer          = &pcm038_timer,
 248 MACHINE_END