forked from luck/tmp_suning_uos_patched
34e31d871e
This patch adds main support for the generic phyCORE-PXA270 CPU module (aka PCM-027). Its as generic as possible to support any kind of baseboard. Note: Neither the CPU module nor the pcm027.c implementation can work without a baseboard support. Baseboard support can be added by the PCM-990 or any custom variant. V2: After comments by Eric Miao: - Currently unsupported devices moved into separate patch - direct call of baseboard initialisation V3: After comments by Russell King - sort include files - setting RTC bit for power control removed - style problems fixed (discovered by checkpatch.pl) Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
217 lines
5.1 KiB
C
217 lines
5.1 KiB
C
/*
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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: armlinux@phytec.de
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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 (j.beisert@pengutronix.de)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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/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 <asm/arch/hardware.h>
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#include <asm/arch/pxa-regs.h>
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#include <asm/arch/pxa2xx_spi.h>
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#include <asm/arch/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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/*
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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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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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platform_add_devices(devices, ARRAY_SIZE(devices));
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/* LEDs (on demand only) */
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#ifdef CONFIG_LEDS_GPIO
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pxa_gpio_mode(PCM027_LED_CPU | GPIO_OUT);
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pxa_gpio_mode(PCM027_LED_HEARD_BEAT | GPIO_OUT);
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#endif /* CONFIG_LEDS_GPIO */
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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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}
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static void __init pcm027_map_io(void)
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{
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pxa_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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.boot_params = 0xa0000100,
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.phys_io = 0x40000000,
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.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
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.map_io = pcm027_map_io,
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.init_irq = pxa27x_init_irq,
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.timer = &pxa_timer,
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.init_machine = pcm027_init,
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MACHINE_END
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