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167 lines
4.0 KiB
167 lines
4.0 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* arch/arm/mach-ixp4xx/gtwx5715-setup.c |
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* |
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* Gemtek GTWX5715 (Linksys WRV54G) board setup |
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* |
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* Copyright (C) 2004 George T. Joseph |
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* Derived from Coyote |
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*/ |
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#include <linux/init.h> |
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#include <linux/device.h> |
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#include <linux/serial.h> |
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#include <linux/tty.h> |
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#include <linux/serial_8250.h> |
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#include <asm/types.h> |
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#include <asm/setup.h> |
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#include <asm/memory.h> |
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#include <mach/hardware.h> |
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#include <asm/irq.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/mach/flash.h> |
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#include "irqs.h" |
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/* GPIO 5,6,7 and 12 are hard wired to the Kendin KS8995M Switch |
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and operate as an SPI type interface. The details of the interface |
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are available on Kendin/Micrel's web site. */ |
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#define GTWX5715_KSSPI_SELECT 5 |
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#define GTWX5715_KSSPI_TXD 6 |
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#define GTWX5715_KSSPI_CLOCK 7 |
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#define GTWX5715_KSSPI_RXD 12 |
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/* The "reset" button is wired to GPIO 3. |
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The GPIO is brought "low" when the button is pushed. */ |
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#define GTWX5715_BUTTON_GPIO 3 |
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/* Board Label Front Label |
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LED1 Power |
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LED2 Wireless-G |
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LED3 not populated but could be |
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LED4 Internet |
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LED5 - LED8 Controlled by KS8995M Switch |
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LED9 DMZ */ |
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#define GTWX5715_LED1_GPIO 2 |
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#define GTWX5715_LED2_GPIO 9 |
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#define GTWX5715_LED3_GPIO 8 |
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#define GTWX5715_LED4_GPIO 1 |
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#define GTWX5715_LED9_GPIO 4 |
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/* |
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* Xscale UART registers are 32 bits wide with only the least |
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* significant 8 bits having any meaning. From a configuration |
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* perspective, this means 2 things... |
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* |
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* Setting .regshift = 2 so that the standard 16550 registers |
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* line up on every 4th byte. |
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* |
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* Shifting the register start virtual address +3 bytes when |
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* compiled big-endian. Since register writes are done on a |
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* single byte basis, if the shift isn't done the driver will |
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* write the value into the most significant byte of the register, |
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* which is ignored, instead of the least significant. |
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*/ |
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#ifdef __ARMEB__ |
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#define REG_OFFSET 3 |
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#else |
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#define REG_OFFSET 0 |
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#endif |
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/* |
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* Only the second or "console" uart is connected on the gtwx5715. |
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*/ |
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static struct resource gtwx5715_uart_resources[] = { |
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{ |
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.start = IXP4XX_UART2_BASE_PHYS, |
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.end = IXP4XX_UART2_BASE_PHYS + 0x0fff, |
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.flags = IORESOURCE_MEM, |
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}, |
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{ |
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.start = IRQ_IXP4XX_UART2, |
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.end = IRQ_IXP4XX_UART2, |
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.flags = IORESOURCE_IRQ, |
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}, |
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{ }, |
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}; |
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static struct plat_serial8250_port gtwx5715_uart_platform_data[] = { |
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{ |
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.mapbase = IXP4XX_UART2_BASE_PHYS, |
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.membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET, |
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.irq = IRQ_IXP4XX_UART2, |
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.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, |
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.iotype = UPIO_MEM, |
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.regshift = 2, |
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.uartclk = IXP4XX_UART_XTAL, |
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}, |
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{ }, |
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}; |
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static struct platform_device gtwx5715_uart_device = { |
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.name = "serial8250", |
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.id = PLAT8250_DEV_PLATFORM, |
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.dev = { |
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.platform_data = gtwx5715_uart_platform_data, |
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}, |
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.num_resources = 2, |
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.resource = gtwx5715_uart_resources, |
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}; |
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static struct flash_platform_data gtwx5715_flash_data = { |
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.map_name = "cfi_probe", |
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.width = 2, |
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}; |
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static struct resource gtwx5715_flash_resource = { |
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.flags = IORESOURCE_MEM, |
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}; |
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static struct platform_device gtwx5715_flash = { |
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.name = "IXP4XX-Flash", |
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.id = 0, |
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.dev = { |
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.platform_data = >wx5715_flash_data, |
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}, |
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.num_resources = 1, |
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.resource = >wx5715_flash_resource, |
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}; |
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static struct platform_device *gtwx5715_devices[] __initdata = { |
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>wx5715_uart_device, |
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>wx5715_flash, |
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}; |
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static void __init gtwx5715_init(void) |
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{ |
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ixp4xx_sys_init(); |
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gtwx5715_flash_resource.start = IXP4XX_EXP_BUS_BASE(0); |
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gtwx5715_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_8M - 1; |
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platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices)); |
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} |
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MACHINE_START(GTWX5715, "Gemtek GTWX5715 (Linksys WRV54G)") |
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/* Maintainer: George Joseph */ |
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.map_io = ixp4xx_map_io, |
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.init_early = ixp4xx_init_early, |
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.init_irq = ixp4xx_init_irq, |
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.init_time = ixp4xx_timer_init, |
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.atag_offset = 0x100, |
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.init_machine = gtwx5715_init, |
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#if defined(CONFIG_PCI) |
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.dma_zone_size = SZ_64M, |
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#endif |
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.restart = ixp4xx_restart, |
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MACHINE_END |
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