diff options
Diffstat (limited to 'arch/arm/mach-ixp4xx/gtwx5715-setup.c')
| -rw-r--r-- | arch/arm/mach-ixp4xx/gtwx5715-setup.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp4xx/gtwx5715-setup.c b/arch/arm/mach-ixp4xx/gtwx5715-setup.c new file mode 100644 index 000000000..28f0d2a8a --- /dev/null +++ b/arch/arm/mach-ixp4xx/gtwx5715-setup.c @@ -0,0 +1,167 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * arch/arm/mach-ixp4xx/gtwx5715-setup.c + * + * Gemtek GTWX5715 (Linksys WRV54G) board setup + * + * Copyright (C) 2004 George T. Joseph + * Derived from Coyote + */ + +#include <linux/init.h> +#include <linux/device.h> +#include <linux/serial.h> +#include <linux/tty.h> +#include <linux/serial_8250.h> +#include <asm/types.h> +#include <asm/setup.h> +#include <asm/memory.h> +#include <mach/hardware.h> +#include <asm/irq.h> +#include <asm/mach-types.h> +#include <asm/mach/arch.h> +#include <asm/mach/flash.h> + +#include "irqs.h" + +/* GPIO 5,6,7 and 12 are hard wired to the Kendin KS8995M Switch + and operate as an SPI type interface. The details of the interface + are available on Kendin/Micrel's web site. */ + +#define GTWX5715_KSSPI_SELECT 5 +#define GTWX5715_KSSPI_TXD 6 +#define GTWX5715_KSSPI_CLOCK 7 +#define GTWX5715_KSSPI_RXD 12 + +/* The "reset" button is wired to GPIO 3. + The GPIO is brought "low" when the button is pushed. */ + +#define GTWX5715_BUTTON_GPIO 3 + +/* Board Label Front Label + LED1 Power + LED2 Wireless-G + LED3 not populated but could be + LED4 Internet + LED5 - LED8 Controlled by KS8995M Switch + LED9 DMZ */ + +#define GTWX5715_LED1_GPIO 2 +#define GTWX5715_LED2_GPIO 9 +#define GTWX5715_LED3_GPIO 8 +#define GTWX5715_LED4_GPIO 1 +#define GTWX5715_LED9_GPIO 4 + +/* + * Xscale UART registers are 32 bits wide with only the least + * significant 8 bits having any meaning. From a configuration + * perspective, this means 2 things... + * + * Setting .regshift = 2 so that the standard 16550 registers + * line up on every 4th byte. + * + * Shifting the register start virtual address +3 bytes when + * compiled big-endian. Since register writes are done on a + * single byte basis, if the shift isn't done the driver will + * write the value into the most significant byte of the register, + * which is ignored, instead of the least significant. + */ + +#ifdef __ARMEB__ +#define REG_OFFSET 3 +#else +#define REG_OFFSET 0 +#endif + +/* + * Only the second or "console" uart is connected on the gtwx5715. + */ + +static struct resource gtwx5715_uart_resources[] = { + { + .start = IXP4XX_UART2_BASE_PHYS, + .end = IXP4XX_UART2_BASE_PHYS + 0x0fff, + .flags = IORESOURCE_MEM, + }, + { + .start = IRQ_IXP4XX_UART2, + .end = IRQ_IXP4XX_UART2, + .flags = IORESOURCE_IRQ, + }, + { }, +}; + + +static struct plat_serial8250_port gtwx5715_uart_platform_data[] = { + { + .mapbase = IXP4XX_UART2_BASE_PHYS, + .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET, + .irq = IRQ_IXP4XX_UART2, + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, + .iotype = UPIO_MEM, + .regshift = 2, + .uartclk = IXP4XX_UART_XTAL, + }, + { }, +}; + +static struct platform_device gtwx5715_uart_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .dev = { + .platform_data = gtwx5715_uart_platform_data, + }, + .num_resources = 2, + .resource = gtwx5715_uart_resources, +}; + +static struct flash_platform_data gtwx5715_flash_data = { + .map_name = "cfi_probe", + .width = 2, +}; + +static struct resource gtwx5715_flash_resource = { + .flags = IORESOURCE_MEM, +}; + +static struct platform_device gtwx5715_flash = { + .name = "IXP4XX-Flash", + .id = 0, + .dev = { + .platform_data = >wx5715_flash_data, + }, + .num_resources = 1, + .resource = >wx5715_flash_resource, +}; + +static struct platform_device *gtwx5715_devices[] __initdata = { + >wx5715_uart_device, + >wx5715_flash, +}; + +static void __init gtwx5715_init(void) +{ + ixp4xx_sys_init(); + + gtwx5715_flash_resource.start = IXP4XX_EXP_BUS_BASE(0); + gtwx5715_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_8M - 1; + + platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices)); +} + + +MACHINE_START(GTWX5715, "Gemtek GTWX5715 (Linksys WRV54G)") + /* Maintainer: George Joseph */ + .map_io = ixp4xx_map_io, + .init_early = ixp4xx_init_early, + .init_irq = ixp4xx_init_irq, + .init_time = ixp4xx_timer_init, + .atag_offset = 0x100, + .init_machine = gtwx5715_init, +#if defined(CONFIG_PCI) + .dma_zone_size = SZ_64M, +#endif + .restart = ixp4xx_restart, +MACHINE_END + + |