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ARM: Tegra: Seaboard: Add USB devices

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Seaboard has a couple of external USB ports. Add the platform devices and
GPIO infra-structure to enable these.

I tested both ports with a mouse on Seaboard non-clamshell.

This change is extracted from code in the ChromeOS 2.6.38 kernel.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Stephen Warren 2011-08-08 14:35:15 -06:00 committed by Olof Johansson
parent a697e694ae
commit bc24ed4f21
2 changed files with 28 additions and 0 deletions
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1
arch/arm/mach-tegra/board-seaboard-pinmux.c
View File

@ -168,6 +168,7 @@ static struct tegra_gpio_table gpio_table[] = {
{ .gpio = TEGRA_GPIO_POWERKEY, .enable = true },
{ .gpio = TEGRA_GPIO_ISL29018_IRQ, .enable = true },
{ .gpio = TEGRA_GPIO_CDC_IRQ, .enable = true },
{ .gpio = TEGRA_GPIO_USB1, .enable = true },
};
void __init seaboard_pinmux_init(void)

27
arch/arm/mach-tegra/board-seaboard.c
View File

@ -69,6 +69,8 @@ static __initdata struct tegra_clk_init_table seaboard_clk_init_table[] = {
{ "pll_a_out0", "pll_a", 11289600, true },
{ "cdev1", NULL, 0, true },
{ "i2s1", "pll_a_out0", 11289600, false},
{ "usbd", "clk_m", 12000000, true},
{ "usb3", "clk_m", 12000000, true},
{ NULL, NULL, 0, 0},
};
@ -182,6 +184,29 @@ static struct i2c_board_info __initdata wm8903_device = {
.irq = TEGRA_GPIO_TO_IRQ(TEGRA_GPIO_CDC_IRQ),
};
static int seaboard_ehci_init(void)
{
int gpio_status;
gpio_status = gpio_request(TEGRA_GPIO_USB1, "VBUS_USB1");
if (gpio_status < 0) {
pr_err("VBUS_USB1 request GPIO FAILED\n");
WARN_ON(1);
}
gpio_status = gpio_direction_output(TEGRA_GPIO_USB1, 1);
if (gpio_status < 0) {
pr_err("VBUS_USB1 request GPIO DIRECTION FAILED\n");
WARN_ON(1);
}
gpio_set_value(TEGRA_GPIO_USB1, 1);
platform_device_register(&tegra_ehci1_device);
platform_device_register(&tegra_ehci3_device);
return 0;
}
static void __init seaboard_i2c_init(void)
{
gpio_request(TEGRA_GPIO_ISL29018_IRQ, "isl29018");
@ -209,6 +234,8 @@ static void __init seaboard_common_init(void)
tegra_sdhci_device4.dev.platform_data = &sdhci_pdata4;
platform_add_devices(seaboard_devices, ARRAY_SIZE(seaboard_devices));
seaboard_ehci_init();
}
static void __init tegra_seaboard_init(void)