2 * arch/arm/mach-ixp4xx/gtwx5715-setup.c
4 * Gemtek GTWX5715 (Linksys WRV54G) board setup
6 * Copyright (C) 2004 George T. Joseph
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 #include <linux/init.h>
26 #include <linux/device.h>
27 #include <linux/serial.h>
28 #include <linux/tty.h>
29 #include <linux/serial_8250.h>
30 #include <asm/types.h>
31 #include <asm/setup.h>
32 #include <asm/memory.h>
33 #include <mach/hardware.h>
35 #include <asm/mach-types.h>
36 #include <asm/mach/arch.h>
37 #include <asm/mach/flash.h>
41 /* GPIO 5,6,7 and 12 are hard wired to the Kendin KS8995M Switch
42 and operate as an SPI type interface. The details of the interface
43 are available on Kendin/Micrel's web site. */
45 #define GTWX5715_KSSPI_SELECT 5
46 #define GTWX5715_KSSPI_TXD 6
47 #define GTWX5715_KSSPI_CLOCK 7
48 #define GTWX5715_KSSPI_RXD 12
50 /* The "reset" button is wired to GPIO 3.
51 The GPIO is brought "low" when the button is pushed. */
53 #define GTWX5715_BUTTON_GPIO 3
55 /* Board Label Front Label
58 LED3 not populated but could be
60 LED5 - LED8 Controlled by KS8995M Switch
63 #define GTWX5715_LED1_GPIO 2
64 #define GTWX5715_LED2_GPIO 9
65 #define GTWX5715_LED3_GPIO 8
66 #define GTWX5715_LED4_GPIO 1
67 #define GTWX5715_LED9_GPIO 4
70 * Xscale UART registers are 32 bits wide with only the least
71 * significant 8 bits having any meaning. From a configuration
72 * perspective, this means 2 things...
74 * Setting .regshift = 2 so that the standard 16550 registers
75 * line up on every 4th byte.
77 * Shifting the register start virtual address +3 bytes when
78 * compiled big-endian. Since register writes are done on a
79 * single byte basis, if the shift isn't done the driver will
80 * write the value into the most significant byte of the register,
81 * which is ignored, instead of the least significant.
91 * Only the second or "console" uart is connected on the gtwx5715.
94 static struct resource gtwx5715_uart_resources[] = {
96 .start = IXP4XX_UART2_BASE_PHYS,
97 .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
98 .flags = IORESOURCE_MEM,
101 .start = IRQ_IXP4XX_UART2,
102 .end = IRQ_IXP4XX_UART2,
103 .flags = IORESOURCE_IRQ,
109 static struct plat_serial8250_port gtwx5715_uart_platform_data[] = {
111 .mapbase = IXP4XX_UART2_BASE_PHYS,
112 .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
113 .irq = IRQ_IXP4XX_UART2,
114 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
117 .uartclk = IXP4XX_UART_XTAL,
122 static struct platform_device gtwx5715_uart_device = {
123 .name = "serial8250",
124 .id = PLAT8250_DEV_PLATFORM,
126 .platform_data = gtwx5715_uart_platform_data,
129 .resource = gtwx5715_uart_resources,
132 static struct flash_platform_data gtwx5715_flash_data = {
133 .map_name = "cfi_probe",
137 static struct resource gtwx5715_flash_resource = {
138 .flags = IORESOURCE_MEM,
141 static struct platform_device gtwx5715_flash = {
142 .name = "IXP4XX-Flash",
145 .platform_data = >wx5715_flash_data,
148 .resource = >wx5715_flash_resource,
151 static struct platform_device *gtwx5715_devices[] __initdata = {
152 >wx5715_uart_device,
156 static void __init gtwx5715_init(void)
160 gtwx5715_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
161 gtwx5715_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_8M - 1;
163 platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices));
167 MACHINE_START(GTWX5715, "Gemtek GTWX5715 (Linksys WRV54G)")
168 /* Maintainer: George Joseph */
169 .map_io = ixp4xx_map_io,
170 .init_early = ixp4xx_init_early,
171 .init_irq = ixp4xx_init_irq,
172 .init_time = ixp4xx_timer_init,
173 .atag_offset = 0x100,
174 .init_machine = gtwx5715_init,
175 #if defined(CONFIG_PCI)
176 .dma_zone_size = SZ_64M,
178 .restart = ixp4xx_restart,