arch/arm/mach-ixp4xx/vulcan-setup.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * arch/arm/mach-ixp4xx/vulcan-setup.c
   4  *
   5  * Arcom/Eurotech Vulcan board-setup
   6  *
   7  * Copyright (C) 2010 Marc Zyngier <maz@misterjones.org>
   8  *
   9  * based on fsg-setup.c:
  10  *      Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
  11  */
  12
  13 #include <linux/if_ether.h>
  14 #include <linux/irq.h>
  15 #include <linux/serial.h>
  16 #include <linux/serial_8250.h>
  17 #include <linux/io.h>
  18 #include <linux/w1-gpio.h>
  19 #include <linux/gpio/machine.h>
  20 #include <linux/mtd/plat-ram.h>
  21 #include <asm/mach-types.h>
  22 #include <asm/mach/arch.h>
  23 #include <asm/mach/flash.h>
  24
  25 static struct flash_platform_data vulcan_flash_data = {
  26         .map_name       = "cfi_probe",
  27         .width          = 2,
  28 };
  29
  30 static struct resource vulcan_flash_resource = {
  31         .flags                  = IORESOURCE_MEM,
  32 };
  33
  34 static struct platform_device vulcan_flash = {
  35         .name                   = "IXP4XX-Flash",
  36         .id                     = 0,
  37         .dev = {
  38                 .platform_data  = &vulcan_flash_data,
  39         },
  40         .resource               = &vulcan_flash_resource,
  41         .num_resources          = 1,
  42 };
  43
  44 static struct platdata_mtd_ram vulcan_sram_data = {
  45         .mapname        = "Vulcan SRAM",
  46         .bankwidth      = 1,
  47 };
  48
  49 static struct resource vulcan_sram_resource = {
  50         .flags                  = IORESOURCE_MEM,
  51 };
  52
  53 static struct platform_device vulcan_sram = {
  54         .name                   = "mtd-ram",
  55         .id                     = 0,
  56         .dev = {
  57                 .platform_data  = &vulcan_sram_data,
  58         },
  59         .resource               = &vulcan_sram_resource,
  60         .num_resources          = 1,
  61 };
  62
  63 static struct resource vulcan_uart_resources[] = {
  64         [0] = {
  65                 .start          = IXP4XX_UART1_BASE_PHYS,
  66                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
  67                 .flags          = IORESOURCE_MEM,
  68         },
  69         [1] = {
  70                 .start          = IXP4XX_UART2_BASE_PHYS,
  71                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
  72                 .flags          = IORESOURCE_MEM,
  73         },
  74         [2] = {
  75                 .flags          = IORESOURCE_MEM,
  76         },
  77 };
  78
  79 static struct plat_serial8250_port vulcan_uart_data[] = {
  80         [0] = {
  81                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
  82                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
  83                 .irq            = IRQ_IXP4XX_UART1,
  84                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
  85                 .iotype         = UPIO_MEM,
  86                 .regshift       = 2,
  87                 .uartclk        = IXP4XX_UART_XTAL,
  88         },
  89         [1] = {
  90                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
  91                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
  92                 .irq            = IRQ_IXP4XX_UART2,
  93                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
  94                 .iotype         = UPIO_MEM,
  95                 .regshift       = 2,
  96                 .uartclk        = IXP4XX_UART_XTAL,
  97         },
  98         [2] = {
  99                 .irq            = IXP4XX_GPIO_IRQ(4),
 100                 .irqflags       = IRQF_TRIGGER_LOW,
 101                 .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 102                 .iotype         = UPIO_MEM,
 103                 .uartclk        = 1843200,
 104         },
 105         [3] = {
 106                 .irq            = IXP4XX_GPIO_IRQ(4),
 107                 .irqflags       = IRQF_TRIGGER_LOW,
 108                 .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
 109                 .iotype         = UPIO_MEM,
 110                 .uartclk        = 1843200,
 111         },
 112         { }
 113 };
 114
 115 static struct platform_device vulcan_uart = {
 116         .name                   = "serial8250",
 117         .id                     = PLAT8250_DEV_PLATFORM,
 118         .dev = {
 119                 .platform_data  = vulcan_uart_data,
 120         },
 121         .resource               = vulcan_uart_resources,
 122         .num_resources          = ARRAY_SIZE(vulcan_uart_resources),
 123 };
 124
 125 static struct eth_plat_info vulcan_plat_eth[] = {
 126         [0] = {
 127                 .phy            = 0,
 128                 .rxq            = 3,
 129                 .txreadyq       = 20,
 130         },
 131         [1] = {
 132                 .phy            = 1,
 133                 .rxq            = 4,
 134                 .txreadyq       = 21,
 135         },
 136 };
 137
 138 static struct platform_device vulcan_eth[] = {
 139         [0] = {
 140                 .name                   = "ixp4xx_eth",
 141                 .id                     = IXP4XX_ETH_NPEB,
 142                 .dev = {
 143                         .platform_data  = &vulcan_plat_eth[0],
 144                 },
 145         },
 146         [1] = {
 147                 .name                   = "ixp4xx_eth",
 148                 .id                     = IXP4XX_ETH_NPEC,
 149                 .dev = {
 150                         .platform_data  = &vulcan_plat_eth[1],
 151                 },
 152         },
 153 };
 154
 155 static struct resource vulcan_max6369_resource = {
 156         .flags                  = IORESOURCE_MEM,
 157 };
 158
 159 static struct platform_device vulcan_max6369 = {
 160         .name                   = "max6369_wdt",
 161         .id                     = -1,
 162         .resource               = &vulcan_max6369_resource,
 163         .num_resources          = 1,
 164 };
 165
 166 static struct gpiod_lookup_table vulcan_w1_gpiod_table = {
 167         .dev_id = "w1-gpio",
 168         .table = {
 169                 GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", 14, NULL, 0,
 170                                 GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 171         },
 172 };
 173
 174 static struct w1_gpio_platform_data vulcan_w1_gpio_pdata = {
 175         /* Intentionally left blank */
 176 };
 177
 178 static struct platform_device vulcan_w1_gpio = {
 179         .name                   = "w1-gpio",
 180         .id                     = 0,
 181         .dev                    = {
 182                 .platform_data  = &vulcan_w1_gpio_pdata,
 183         },
 184 };
 185
 186 static struct platform_device *vulcan_devices[] __initdata = {
 187         &vulcan_uart,
 188         &vulcan_flash,
 189         &vulcan_sram,
 190         &vulcan_max6369,
 191         &vulcan_eth[0],
 192         &vulcan_eth[1],
 193         &vulcan_w1_gpio,
 194 };
 195
 196 static void __init vulcan_init(void)
 197 {
 198         ixp4xx_sys_init();
 199
 200         /* Flash is spread over both CS0 and CS1 */
 201         vulcan_flash_resource.start      = IXP4XX_EXP_BUS_BASE(0);
 202         vulcan_flash_resource.end        = IXP4XX_EXP_BUS_BASE(0) + SZ_32M - 1;
 203         *IXP4XX_EXP_CS0 = IXP4XX_EXP_BUS_CS_EN          |
 204                           IXP4XX_EXP_BUS_STROBE_T(3)    |
 205                           IXP4XX_EXP_BUS_SIZE(0xF)      |
 206                           IXP4XX_EXP_BUS_BYTE_RD16      |
 207                           IXP4XX_EXP_BUS_WR_EN;
 208         *IXP4XX_EXP_CS1 = *IXP4XX_EXP_CS0;
 209
 210         /* SRAM on CS2, (256kB, 8bit, writable) */
 211         vulcan_sram_resource.start      = IXP4XX_EXP_BUS_BASE(2);
 212         vulcan_sram_resource.end        = IXP4XX_EXP_BUS_BASE(2) + SZ_256K - 1;
 213         *IXP4XX_EXP_CS2 = IXP4XX_EXP_BUS_CS_EN          |
 214                           IXP4XX_EXP_BUS_STROBE_T(1)    |
 215                           IXP4XX_EXP_BUS_HOLD_T(2)      |
 216                           IXP4XX_EXP_BUS_SIZE(9)        |
 217                           IXP4XX_EXP_BUS_SPLT_EN        |
 218                           IXP4XX_EXP_BUS_WR_EN          |
 219                           IXP4XX_EXP_BUS_BYTE_EN;
 220
 221         /* XR16L2551 on CS3 (Moto style, 512 bytes, 8bits, writable) */
 222         vulcan_uart_resources[2].start  = IXP4XX_EXP_BUS_BASE(3);
 223         vulcan_uart_resources[2].end    = IXP4XX_EXP_BUS_BASE(3) + 16 - 1;
 224         vulcan_uart_data[2].mapbase     = vulcan_uart_resources[2].start;
 225         vulcan_uart_data[3].mapbase     = vulcan_uart_data[2].mapbase + 8;
 226         *IXP4XX_EXP_CS3 = IXP4XX_EXP_BUS_CS_EN          |
 227                           IXP4XX_EXP_BUS_STROBE_T(3)    |
 228                           IXP4XX_EXP_BUS_CYCLES(IXP4XX_EXP_BUS_CYCLES_MOTOROLA)|
 229                           IXP4XX_EXP_BUS_WR_EN          |
 230                           IXP4XX_EXP_BUS_BYTE_EN;
 231
 232         /* GPIOS on CS4 (512 bytes, 8bits, writable) */
 233         *IXP4XX_EXP_CS4 = IXP4XX_EXP_BUS_CS_EN          |
 234                           IXP4XX_EXP_BUS_WR_EN          |
 235                           IXP4XX_EXP_BUS_BYTE_EN;
 236
 237         /* max6369 on CS5 (512 bytes, 8bits, writable) */
 238         vulcan_max6369_resource.start   = IXP4XX_EXP_BUS_BASE(5);
 239         vulcan_max6369_resource.end     = IXP4XX_EXP_BUS_BASE(5);
 240         *IXP4XX_EXP_CS5 = IXP4XX_EXP_BUS_CS_EN          |
 241                           IXP4XX_EXP_BUS_WR_EN          |
 242                           IXP4XX_EXP_BUS_BYTE_EN;
 243
 244         gpiod_add_lookup_table(&vulcan_w1_gpiod_table);
 245         platform_add_devices(vulcan_devices, ARRAY_SIZE(vulcan_devices));
 246 }
 247
 248 MACHINE_START(ARCOM_VULCAN, "Arcom/Eurotech Vulcan")
 249         /* Maintainer: Marc Zyngier <maz@misterjones.org> */
 250         .map_io         = ixp4xx_map_io,
 251         .init_early     = ixp4xx_init_early,
 252         .init_irq       = ixp4xx_init_irq,
 253         .init_time      = ixp4xx_timer_init,
 254         .atag_offset    = 0x100,
 255         .init_machine   = vulcan_init,
 256 #if defined(CONFIG_PCI)
 257         .dma_zone_size  = SZ_64M,
 258 #endif
 259         .restart        = ixp4xx_restart,
 260 MACHINE_END