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266 lines
5.9 KiB
266 lines
5.9 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* linux/arch/arm/mach-pxa/pcm027.c |
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* Support for the Phytec phyCORE-PXA270 CPU card (aka PCM-027). |
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* |
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* Refer |
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* http://www.phytec.com/products/sbc/ARM-XScale/phyCORE-XScale-PXA270.html |
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* for additional hardware info |
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* |
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* Author: Juergen Kilb |
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* Created: April 05, 2005 |
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* Copyright: Phytec Messtechnik GmbH |
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* e-Mail: [email protected] |
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* |
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* based on Intel Mainstone Board |
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* |
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* Copyright 2007 Juergen Beisert @ Pengutronix ([email protected]) |
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*/ |
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#include <linux/irq.h> |
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#include <linux/platform_device.h> |
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#include <linux/mtd/physmap.h> |
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#include <linux/spi/spi.h> |
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#include <linux/spi/max7301.h> |
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#include <linux/spi/pxa2xx_spi.h> |
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#include <linux/leds.h> |
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#include <asm/mach-types.h> |
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#include <asm/mach/arch.h> |
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#include "pxa27x.h" |
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#include "pcm027.h" |
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#include "generic.h" |
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/* |
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* ABSTRACT: |
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* |
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* The PXA270 processor comes with a bunch of hardware on its silicon. |
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* Not all of this hardware can be used at the same time and not all |
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* is routed to module's connectors. Also it depends on the baseboard, what |
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* kind of hardware can be used in which way. |
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* -> So this file supports the main devices on the CPU card only! |
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* Refer pcm990-baseboard.c how to extend this features to get a full |
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* blown system with many common interfaces. |
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* |
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* The PCM-027 supports the following interfaces through its connectors and |
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* will be used in pcm990-baseboard.c: |
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* |
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* - LCD support |
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* - MMC support |
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* - IDE/CF card |
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* - FFUART |
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* - BTUART |
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* - IRUART |
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* - AC97 |
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* - SSP |
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* - SSP3 |
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* |
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* Claimed GPIOs: |
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* GPIO0 -> IRQ input from RTC |
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* GPIO2 -> SYS_ENA*) |
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* GPIO3 -> PWR_SCL |
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* GPIO4 -> PWR_SDA |
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* GPIO5 -> PowerCap0*) |
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* GPIO6 -> PowerCap1*) |
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* GPIO7 -> PowerCap2*) |
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* GPIO8 -> PowerCap3*) |
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* GPIO15 -> /CS1 |
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* GPIO20 -> /CS2 |
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* GPIO21 -> /CS3 |
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* GPIO33 -> /CS5 network controller select |
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* GPIO52 -> IRQ from network controller |
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* GPIO78 -> /CS2 |
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* GPIO80 -> /CS4 |
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* GPIO90 -> LED0 |
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* GPIO91 -> LED1 |
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* GPIO114 -> IRQ from CAN controller |
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* GPIO117 -> SCL |
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* GPIO118 -> SDA |
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* |
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* *) CPU internal use only |
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*/ |
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static unsigned long pcm027_pin_config[] __initdata = { |
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/* Chip Selects */ |
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GPIO20_nSDCS_2, |
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GPIO21_nSDCS_3, |
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GPIO15_nCS_1, |
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GPIO78_nCS_2, |
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GPIO80_nCS_4, |
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GPIO33_nCS_5, /* Ethernet */ |
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/* I2C */ |
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GPIO117_I2C_SCL, |
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GPIO118_I2C_SDA, |
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/* GPIO */ |
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GPIO52_GPIO, /* IRQ from network controller */ |
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#ifdef CONFIG_LEDS_GPIO |
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GPIO90_GPIO, /* PCM027_LED_CPU */ |
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GPIO91_GPIO, /* PCM027_LED_HEART_BEAT */ |
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#endif |
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GPIO114_GPIO, /* IRQ from CAN controller */ |
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}; |
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/* |
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* SMC91x network controller specific stuff |
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*/ |
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static struct resource smc91x_resources[] = { |
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[0] = { |
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.start = PCM027_ETH_PHYS + 0x300, |
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.end = PCM027_ETH_PHYS + PCM027_ETH_SIZE, |
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.flags = IORESOURCE_MEM, |
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}, |
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[1] = { |
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.start = PCM027_ETH_IRQ, |
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.end = PCM027_ETH_IRQ, |
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/* note: smc91x's driver doesn't use the trigger bits yet */ |
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.flags = IORESOURCE_IRQ | PCM027_ETH_IRQ_EDGE, |
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} |
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}; |
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static struct platform_device smc91x_device = { |
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.name = "smc91x", |
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.id = 0, |
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.num_resources = ARRAY_SIZE(smc91x_resources), |
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.resource = smc91x_resources, |
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}; |
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/* |
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* SPI host and devices |
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*/ |
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static struct pxa2xx_spi_controller pxa_ssp_master_info = { |
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.num_chipselect = 1, |
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}; |
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static struct max7301_platform_data max7301_info = { |
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.base = -1, |
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}; |
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/* bus_num must match id in pxa2xx_set_spi_info() call */ |
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static struct spi_board_info spi_board_info[] __initdata = { |
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{ |
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.modalias = "max7301", |
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.platform_data = &max7301_info, |
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.max_speed_hz = 13000000, |
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.bus_num = 1, |
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.chip_select = 0, |
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.mode = SPI_MODE_0, |
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}, |
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}; |
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/* |
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* NOR flash |
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*/ |
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static struct physmap_flash_data pcm027_flash_data = { |
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.width = 4, |
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}; |
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static struct resource pcm027_flash_resource = { |
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.start = PCM027_FLASH_PHYS, |
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.end = PCM027_FLASH_PHYS + PCM027_FLASH_SIZE - 1 , |
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.flags = IORESOURCE_MEM, |
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}; |
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static struct platform_device pcm027_flash = { |
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.name = "physmap-flash", |
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.id = 0, |
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.dev = { |
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.platform_data = &pcm027_flash_data, |
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}, |
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.resource = &pcm027_flash_resource, |
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.num_resources = 1, |
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}; |
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#ifdef CONFIG_LEDS_GPIO |
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static struct gpio_led pcm027_led[] = { |
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{ |
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.name = "led0:red", /* FIXME */ |
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.gpio = PCM027_LED_CPU |
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}, |
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{ |
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.name = "led1:green", /* FIXME */ |
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.gpio = PCM027_LED_HEARD_BEAT |
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}, |
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}; |
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static struct gpio_led_platform_data pcm027_led_data = { |
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.num_leds = ARRAY_SIZE(pcm027_led), |
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.leds = pcm027_led |
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}; |
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static struct platform_device pcm027_led_dev = { |
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.name = "leds-gpio", |
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.id = 0, |
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.dev = { |
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.platform_data = &pcm027_led_data, |
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}, |
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}; |
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#endif /* CONFIG_LEDS_GPIO */ |
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/* |
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* declare the available device resources on this board |
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*/ |
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static struct platform_device *devices[] __initdata = { |
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&smc91x_device, |
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&pcm027_flash, |
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#ifdef CONFIG_LEDS_GPIO |
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&pcm027_led_dev |
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#endif |
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}; |
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/* |
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* pcm027_init - breath some life into the board |
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*/ |
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static void __init pcm027_init(void) |
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{ |
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/* system bus arbiter setting |
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* - Core_Park |
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* - LCD_wt:DMA_wt:CORE_Wt = 2:3:4 |
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*/ |
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ARB_CNTRL = ARB_CORE_PARK | 0x234; |
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pxa2xx_mfp_config(pcm027_pin_config, ARRAY_SIZE(pcm027_pin_config)); |
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pxa_set_ffuart_info(NULL); |
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pxa_set_btuart_info(NULL); |
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pxa_set_stuart_info(NULL); |
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platform_add_devices(devices, ARRAY_SIZE(devices)); |
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/* at last call the baseboard to initialize itself */ |
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#ifdef CONFIG_MACH_PCM990_BASEBOARD |
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pcm990_baseboard_init(); |
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#endif |
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pxa2xx_set_spi_info(1, &pxa_ssp_master_info); |
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spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info)); |
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} |
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static void __init pcm027_map_io(void) |
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{ |
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pxa27x_map_io(); |
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/* initialize sleep mode regs (wake-up sources, etc) */ |
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PGSR0 = 0x01308000; |
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PGSR1 = 0x00CF0002; |
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PGSR2 = 0x0E294000; |
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PGSR3 = 0x0000C000; |
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PWER = 0x40000000 | PWER_GPIO0 | PWER_GPIO1; |
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PRER = 0x00000000; |
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PFER = 0x00000003; |
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} |
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MACHINE_START(PCM027, "Phytec Messtechnik GmbH phyCORE-PXA270") |
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/* Maintainer: Pengutronix */ |
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.atag_offset = 0x100, |
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.map_io = pcm027_map_io, |
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.nr_irqs = PCM027_NR_IRQS, |
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.init_irq = pxa27x_init_irq, |
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.handle_irq = pxa27x_handle_irq, |
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.init_time = pxa_timer_init, |
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.init_machine = pcm027_init, |
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.restart = pxa_restart, |
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MACHINE_END
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