166 lines
3.5 KiB
C
166 lines
3.5 KiB
C
#include <common.h>
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#include <console.h>
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#include <init.h>
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#include <driver.h>
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#include <io.h>
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#include <gpio.h>
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#include <ns16550.h>
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#include <asm/armlinux.h>
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#include <generated/mach-types.h>
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#include <mach/omap4-silicon.h>
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#include <mach/omap4-devices.h>
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#include <mach/sdrc.h>
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#include <mach/sys_info.h>
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#include <mach/syslib.h>
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#include <mach/control.h>
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#include <usb/ehci.h>
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#include <linux/err.h>
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#include <sizes.h>
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#include <asm/mmu.h>
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#include <envfs.h>
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#include <i2c/i2c.h>
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#include <gpio.h>
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#include <led.h>
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static int board_revision;
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#define GPIO_HUB_POWER 1
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#define GPIO_HUB_NRESET_39 39
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#define GPIO_HUB_NRESET_62 62
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#define GPIO_BOARD_ID0 182
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#define GPIO_BOARD_ID1 101
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#define GPIO_BOARD_ID2 171
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static int panda_console_init(void)
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{
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barebox_set_model("Texas Instruments panda");
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barebox_set_hostname("panda");
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omap44xx_add_uart3();
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return 0;
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}
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console_initcall(panda_console_init);
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static int panda_mem_init(void)
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{
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omap_add_ram0(SZ_1G);
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return 0;
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}
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mem_initcall(panda_mem_init);
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#ifdef CONFIG_USB_EHCI
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static struct ehci_platform_data ehci_pdata = {
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.flags = 0,
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};
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static void panda_ehci_init(void)
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{
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u32 val;
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int hub_nreset;
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if (board_revision)
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hub_nreset = GPIO_HUB_NRESET_62;
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else
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hub_nreset = GPIO_HUB_NRESET_39;
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/* disable the power to the usb hub prior to init */
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gpio_direction_output(GPIO_HUB_POWER, 0);
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gpio_set_value(GPIO_HUB_POWER, 0);
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/* reset phy+hub */
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gpio_direction_output(hub_nreset, 0);
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gpio_set_value(hub_nreset, 0);
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gpio_set_value(hub_nreset, 1);
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val = readl(0x4a009358);
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val |= (1 << 24);
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val |= 0x2;
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writel(val, 0x4a009358);
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writel(0x7, 0x4a008180);
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mdelay(10);
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writel(0x00000014, 0x4a064010);
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writel(0x8000001c, 0x4a064040);
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/* enable power to hub */
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gpio_set_value(GPIO_HUB_POWER, 1);
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omap44xx_add_ehci(&ehci_pdata);
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}
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#else
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static void panda_ehci_init(void)
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{}
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#endif
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static void __init panda_boardrev_init(void)
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{
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board_revision = gpio_get_value(GPIO_BOARD_ID0);
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board_revision |= (gpio_get_value(GPIO_BOARD_ID1)<<1);
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board_revision |= (gpio_get_value(GPIO_BOARD_ID2)<<2);
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pr_info("PandaBoard Revision: %03d\n", board_revision);
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}
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static struct i2c_board_info i2c_devices[] = {
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{
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I2C_BOARD_INFO("twl6030", 0x48),
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},
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};
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struct gpio_led panda_leds[] = {
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{
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.gpio = 7,
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.led = {
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.name = "heartbeat",
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},
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},
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};
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static void panda_led_init(void)
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{
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led_gpio_register(&panda_leds[0]);
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led_set_trigger(LED_TRIGGER_HEARTBEAT, &panda_leds[0].led);
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}
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static int panda_devices_init(void)
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{
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panda_boardrev_init();
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if (gpio_get_value(182)) {
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/* enable software ioreq */
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sr32(OMAP44XX_SCRM_AUXCLK3, 8, 1, 0x1);
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/* set for sys_clk (38.4MHz) */
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sr32(OMAP44XX_SCRM_AUXCLK3, 1, 2, 0x0);
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/* set divisor to 2 */
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sr32(OMAP44XX_SCRM_AUXCLK3, 16, 4, 0x1);
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/* set the clock source to active */
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sr32(OMAP44XX_SCRM_ALTCLKSRC, 0, 1, 0x1);
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/* enable clocks */
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sr32(OMAP44XX_SCRM_ALTCLKSRC, 2, 2, 0x3);
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} else {
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/* enable software ioreq */
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sr32(OMAP44XX_SCRM_AUXCLK1, 8, 1, 0x1);
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/* set for PER_DPLL */
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sr32(OMAP44XX_SCRM_AUXCLK1, 1, 2, 0x2);
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/* set divisor to 16 */
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sr32(OMAP44XX_SCRM_AUXCLK1, 16, 4, 0xf);
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/* set the clock source to active */
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sr32(OMAP44XX_SCRM_ALTCLKSRC, 0, 1, 0x1);
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/* enable clocks */
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sr32(OMAP44XX_SCRM_ALTCLKSRC, 2, 2, 0x3);
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}
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i2c_register_board_info(0, i2c_devices, ARRAY_SIZE(i2c_devices));
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omap44xx_add_i2c1(NULL);
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omap44xx_add_mmc1(NULL);
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panda_ehci_init();
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panda_led_init();
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armlinux_set_architecture(MACH_TYPE_OMAP4_PANDA);
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return 0;
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}
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device_initcall(panda_devices_init);
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