arch/arm/mach-pxa/pcm027.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  linux/arch/arm/mach-pxa/pcm027.c
   4  *  Support for the Phytec phyCORE-PXA270 CPU card (aka PCM-027).
   5  *
   6  *  Refer
   7  *   http://www.phytec.com/products/sbc/ARM-XScale/phyCORE-XScale-PXA270.html
   8  *  for additional hardware info
   9  *
  10  *  Author:     Juergen Kilb
  11  *  Created:    April 05, 2005
  12  *  Copyright:  Phytec Messtechnik GmbH
  13  *  e-Mail:     armlinux@phytec.de
  14  *
  15  *  based on Intel Mainstone Board
  16  *
  17  *  Copyright 2007 Juergen Beisert @ Pengutronix (j.beisert@pengutronix.de)
  18  */
  19
  20 #include <linux/irq.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/mtd/physmap.h>
  23 #include <linux/spi/spi.h>
  24 #include <linux/spi/max7301.h>
  25 #include <linux/spi/pxa2xx_spi.h>
  26 #include <linux/leds.h>
  27
  28 #include <asm/mach-types.h>
  29 #include <asm/mach/arch.h>
  30 #include "pxa27x.h"
  31 #include "pcm027.h"
  32 #include "generic.h"
  33
  34 /*
  35  * ABSTRACT:
  36  *
  37  * The PXA270 processor comes with a bunch of hardware on its silicon.
  38  * Not all of this hardware can be used at the same time and not all
  39  * is routed to module's connectors. Also it depends on the baseboard, what
  40  * kind of hardware can be used in which way.
  41  * -> So this file supports the main devices on the CPU card only!
  42  * Refer pcm990-baseboard.c how to extend this features to get a full
  43  * blown system with many common interfaces.
  44  *
  45  * The PCM-027 supports the following interfaces through its connectors and
  46  * will be used in pcm990-baseboard.c:
  47  *
  48  * - LCD support
  49  * - MMC support
  50  * - IDE/CF card
  51  * - FFUART
  52  * - BTUART
  53  * - IRUART
  54  * - AC97
  55  * - SSP
  56  * - SSP3
  57  *
  58  * Claimed GPIOs:
  59  * GPIO0 -> IRQ input from RTC
  60  * GPIO2 -> SYS_ENA*)
  61  * GPIO3 -> PWR_SCL
  62  * GPIO4 -> PWR_SDA
  63  * GPIO5 -> PowerCap0*)
  64  * GPIO6 -> PowerCap1*)
  65  * GPIO7 -> PowerCap2*)
  66  * GPIO8 -> PowerCap3*)
  67  * GPIO15 -> /CS1
  68  * GPIO20 -> /CS2
  69  * GPIO21 -> /CS3
  70  * GPIO33 -> /CS5 network controller select
  71  * GPIO52 -> IRQ from network controller
  72  * GPIO78 -> /CS2
  73  * GPIO80 -> /CS4
  74  * GPIO90 -> LED0
  75  * GPIO91 -> LED1
  76  * GPIO114 -> IRQ from CAN controller
  77  * GPIO117 -> SCL
  78  * GPIO118 -> SDA
  79  *
  80  * *) CPU internal use only
  81  */
  82
  83 static unsigned long pcm027_pin_config[] __initdata = {
  84         /* Chip Selects */
  85         GPIO20_nSDCS_2,
  86         GPIO21_nSDCS_3,
  87         GPIO15_nCS_1,
  88         GPIO78_nCS_2,
  89         GPIO80_nCS_4,
  90         GPIO33_nCS_5,   /* Ethernet */
  91
  92         /* I2C */
  93         GPIO117_I2C_SCL,
  94         GPIO118_I2C_SDA,
  95
  96         /* GPIO */
  97         GPIO52_GPIO,    /* IRQ from network controller */
  98 #ifdef CONFIG_LEDS_GPIO
  99         GPIO90_GPIO,    /* PCM027_LED_CPU */
 100         GPIO91_GPIO,    /* PCM027_LED_HEART_BEAT */
 101 #endif
 102         GPIO114_GPIO,   /* IRQ from CAN controller */
 103 };
 104
 105 /*
 106  * SMC91x network controller specific stuff
 107  */
 108 static struct resource smc91x_resources[] = {
 109         [0] = {
 110                 .start  = PCM027_ETH_PHYS + 0x300,
 111                 .end    = PCM027_ETH_PHYS + PCM027_ETH_SIZE,
 112                 .flags  = IORESOURCE_MEM,
 113         },
 114         [1] = {
 115                 .start  = PCM027_ETH_IRQ,
 116                 .end    = PCM027_ETH_IRQ,
 117                 /* note: smc91x's driver doesn't use the trigger bits yet */
 118                 .flags  = IORESOURCE_IRQ | PCM027_ETH_IRQ_EDGE,
 119         }
 120 };
 121
 122 static struct platform_device smc91x_device = {
 123         .name           = "smc91x",
 124         .id             = 0,
 125         .num_resources  = ARRAY_SIZE(smc91x_resources),
 126         .resource       = smc91x_resources,
 127 };
 128
 129 /*
 130  * SPI host and devices
 131  */
 132 static struct pxa2xx_spi_controller pxa_ssp_master_info = {
 133         .num_chipselect = 1,
 134 };
 135
 136 static struct max7301_platform_data max7301_info = {
 137         .base = -1,
 138 };
 139
 140 /* bus_num must match id in pxa2xx_set_spi_info() call */
 141 static struct spi_board_info spi_board_info[] __initdata = {
 142         {
 143                 .modalias       = "max7301",
 144                 .platform_data  = &max7301_info,
 145                 .max_speed_hz   = 13000000,
 146                 .bus_num        = 1,
 147                 .chip_select    = 0,
 148                 .mode           = SPI_MODE_0,
 149         },
 150 };
 151
 152 /*
 153  * NOR flash
 154  */
 155 static struct physmap_flash_data pcm027_flash_data = {
 156         .width  = 4,
 157 };
 158
 159 static struct resource pcm027_flash_resource = {
 160         .start          = PCM027_FLASH_PHYS,
 161         .end            = PCM027_FLASH_PHYS + PCM027_FLASH_SIZE - 1 ,
 162         .flags          = IORESOURCE_MEM,
 163 };
 164
 165 static struct platform_device pcm027_flash = {
 166         .name           = "physmap-flash",
 167         .id             = 0,
 168         .dev            = {
 169                 .platform_data  = &pcm027_flash_data,
 170         },
 171         .resource       = &pcm027_flash_resource,
 172         .num_resources  = 1,
 173 };
 174
 175 #ifdef CONFIG_LEDS_GPIO
 176
 177 static struct gpio_led pcm027_led[] = {
 178         {
 179                 .name = "led0:red",     /* FIXME */
 180                 .gpio = PCM027_LED_CPU
 181         },
 182         {
 183                 .name = "led1:green",   /* FIXME */
 184                 .gpio = PCM027_LED_HEARD_BEAT
 185         },
 186 };
 187
 188 static struct gpio_led_platform_data pcm027_led_data = {
 189         .num_leds       = ARRAY_SIZE(pcm027_led),
 190         .leds           = pcm027_led
 191 };
 192
 193 static struct platform_device pcm027_led_dev = {
 194         .name           = "leds-gpio",
 195         .id             = 0,
 196         .dev            = {
 197                 .platform_data  = &pcm027_led_data,
 198         },
 199 };
 200
 201 #endif /* CONFIG_LEDS_GPIO */
 202
 203 /*
 204  * declare the available device resources on this board
 205  */
 206 static struct platform_device *devices[] __initdata = {
 207         &smc91x_device,
 208         &pcm027_flash,
 209 #ifdef CONFIG_LEDS_GPIO
 210         &pcm027_led_dev
 211 #endif
 212 };
 213
 214 /*
 215  * pcm027_init - breath some life into the board
 216  */
 217 static void __init pcm027_init(void)
 218 {
 219         /* system bus arbiter setting
 220          * - Core_Park
 221          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
 222          */
 223         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 224
 225         pxa2xx_mfp_config(pcm027_pin_config, ARRAY_SIZE(pcm027_pin_config));
 226
 227         pxa_set_ffuart_info(NULL);
 228         pxa_set_btuart_info(NULL);
 229         pxa_set_stuart_info(NULL);
 230
 231         platform_add_devices(devices, ARRAY_SIZE(devices));
 232
 233         /* at last call the baseboard to initialize itself */
 234 #ifdef CONFIG_MACH_PCM990_BASEBOARD
 235         pcm990_baseboard_init();
 236 #endif
 237
 238         pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
 239         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 240 }
 241
 242 static void __init pcm027_map_io(void)
 243 {
 244         pxa27x_map_io();
 245
 246         /* initialize sleep mode regs (wake-up sources, etc) */
 247         PGSR0 = 0x01308000;
 248         PGSR1 = 0x00CF0002;
 249         PGSR2 = 0x0E294000;
 250         PGSR3 = 0x0000C000;
 251         PWER  = 0x40000000 | PWER_GPIO0 | PWER_GPIO1;
 252         PRER  = 0x00000000;
 253         PFER  = 0x00000003;
 254 }
 255
 256 MACHINE_START(PCM027, "Phytec Messtechnik GmbH phyCORE-PXA270")
 257         /* Maintainer: Pengutronix */
 258         .atag_offset    = 0x100,
 259         .map_io         = pcm027_map_io,
 260         .nr_irqs        = PCM027_NR_IRQS,
 261         .init_irq       = pxa27x_init_irq,
 262         .handle_irq     = pxa27x_handle_irq,
 263         .init_time      = pxa_timer_init,
 264         .init_machine   = pcm027_init,
 265         .restart        = pxa_restart,
 266 MACHINE_END