2 * Board-specific setup code for the ATNGW100 Network Gateway
4 * Copyright (C) 2005-2006 Atmel Corporation
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 #include <linux/clk.h>
11 #include <linux/etherdevice.h>
12 #include <linux/irq.h>
13 #include <linux/i2c.h>
14 #include <linux/i2c-gpio.h>
15 #include <linux/init.h>
16 #include <linux/linkage.h>
17 #include <linux/platform_device.h>
18 #include <linux/types.h>
19 #include <linux/leds.h>
20 #include <linux/spi/spi.h>
22 #include <asm/atmel-mci.h>
24 #include <asm/setup.h>
26 #include <mach/at32ap700x.h>
27 #include <mach/board.h>
28 #include <mach/init.h>
29 #include <mach/portmux.h>
31 /* Oscillator frequencies. These are board-specific */
32 unsigned long at32_board_osc_rates[3] = {
33 [0] = 32768, /* 32.768 kHz on RTC osc */
34 [1] = 20000000, /* 20 MHz on osc0 */
35 [2] = 12000000, /* 12 MHz on osc1 */
38 /* Initialized by bootloader-specific startup code. */
39 struct tag *bootloader_tags __initdata;
44 static struct eth_addr __initdata hw_addr[2];
45 static struct eth_platform_data __initdata eth_data[2];
47 static struct spi_board_info spi0_board_info[] __initdata = {
49 .modalias = "mtd_dataflash",
50 .max_speed_hz = 8000000,
55 static struct mci_platform_data __initdata mci0_data = {
58 .detect_pin = GPIO_PIN_PC(25),
59 .wp_pin = GPIO_PIN_PE(0),
64 * The next two functions should go away as the boot loader is
65 * supposed to initialize the macb address registers with a valid
66 * ethernet address. But we need to keep it around for a while until
67 * we can be reasonably sure the boot loader does this.
69 * The phy_id is ignored as the driver will probe for it.
71 static int __init parse_tag_ethernet(struct tag *tag)
75 i = tag->u.ethernet.mac_index;
76 if (i < ARRAY_SIZE(hw_addr))
77 memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
78 sizeof(hw_addr[i].addr));
82 __tagtable(ATAG_ETHERNET, parse_tag_ethernet);
84 static void __init set_hw_addr(struct platform_device *pdev)
86 struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
93 if (pdev->id >= ARRAY_SIZE(hw_addr))
96 addr = hw_addr[pdev->id].addr;
97 if (!is_valid_ether_addr(addr))
101 * Since this is board-specific code, we'll cheat and use the
102 * physical address directly as we happen to know that it's
103 * the same as the virtual address.
105 regs = (void __iomem __force *)res->start;
106 pclk = clk_get(&pdev->dev, "pclk");
111 __raw_writel((addr[3] << 24) | (addr[2] << 16)
112 | (addr[1] << 8) | addr[0], regs + 0x98);
113 __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
118 void __init setup_board(void)
120 at32_map_usart(1, 0); /* USART 1: /dev/ttyS0, DB9 */
121 at32_setup_serial_console(0);
124 static const struct gpio_led ngw_leds[] = {
125 { .name = "sys", .gpio = GPIO_PIN_PA(16), .active_low = 1,
126 .default_trigger = "heartbeat",
128 { .name = "a", .gpio = GPIO_PIN_PA(19), .active_low = 1, },
129 { .name = "b", .gpio = GPIO_PIN_PE(19), .active_low = 1, },
132 static const struct gpio_led_platform_data ngw_led_data = {
133 .num_leds = ARRAY_SIZE(ngw_leds),
134 .leds = (void *) ngw_leds,
137 static struct platform_device ngw_gpio_leds = {
141 .platform_data = (void *) &ngw_led_data,
145 static struct i2c_gpio_platform_data i2c_gpio_data = {
146 .sda_pin = GPIO_PIN_PA(6),
147 .scl_pin = GPIO_PIN_PA(7),
148 .sda_is_open_drain = 1,
149 .scl_is_open_drain = 1,
150 .udelay = 2, /* close to 100 kHz */
153 static struct platform_device i2c_gpio_device = {
157 .platform_data = &i2c_gpio_data,
161 static struct i2c_board_info __initdata i2c_info[] = {
162 /* NOTE: original ATtiny24 firmware is at address 0x0b */
165 static int __init atngw100_init(void)
170 * ATNGW100 uses 16-bit SDRAM interface, so we don't need to
171 * reserve any pins for it.
174 at32_add_system_devices();
176 at32_add_device_usart(0);
178 set_hw_addr(at32_add_device_eth(0, ð_data[0]));
179 set_hw_addr(at32_add_device_eth(1, ð_data[1]));
181 at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
182 at32_add_device_mci(0, &mci0_data);
183 at32_add_device_usba(0, NULL);
185 for (i = 0; i < ARRAY_SIZE(ngw_leds); i++) {
186 at32_select_gpio(ngw_leds[i].gpio,
187 AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
189 platform_device_register(&ngw_gpio_leds);
191 /* all these i2c/smbus pins should have external pullups for
192 * open-drain sharing among all I2C devices. SDA and SCL do;
193 * PB28/EXTINT3 doesn't; it should be SMBALERT# (for PMBus),
194 * but it's not available off-board.
196 at32_select_periph(GPIO_PIN_PB(28), 0, AT32_GPIOF_PULLUP);
197 at32_select_gpio(i2c_gpio_data.sda_pin,
198 AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
199 at32_select_gpio(i2c_gpio_data.scl_pin,
200 AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
201 platform_device_register(&i2c_gpio_device);
202 i2c_register_board_info(0, i2c_info, ARRAY_SIZE(i2c_info));
206 postcore_initcall(atngw100_init);
208 static int __init atngw100_arch_init(void)
210 /* set_irq_type() after the arch_initcall for EIC has run, and
211 * before the I2C subsystem could try using this IRQ.
213 return set_irq_type(AT32_EXTINT(3), IRQ_TYPE_EDGE_FALLING);
215 arch_initcall(atngw100_arch_init);