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x86: minnowmax: Configure GPIO pins to turn on USB ports VBUS

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GPIO bank E pin 8 & 9 are used to control the on-board two USB ports
VBUS on/off. Let's configure them in the misc_init_r().

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Bin Meng
2017-06-16 06:31:46 -07:00
parent 235c5b8315
commit 70b95ded03
2 changed files with 54 additions and 0 deletions
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53
board/intel/minnowmax/minnowmax.c
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@@ -5,9 +5,62 @@
*/
#include <common.h>
#include <dm.h>
#include <asm/gpio.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>
#define GPIO_BANKE_NAME "gpioe"
int arch_early_init_r(void)
{
return 0;
}
int misc_init_r(void)
{
struct udevice *dev;
struct gpio_desc desc;
int ret;
/*
* Turn on USB VBUS for the two USB ports on the board.
* Each port's VBUS is controlled by a GPIO pin.
*/
ret = uclass_find_device_by_name(UCLASS_GPIO, GPIO_BANKE_NAME, &dev);
if (ret) {
debug("%s: GPIO %s device cannot be not found (ret=%d)\n",
__func__, GPIO_BANKE_NAME, ret);
return ret;
}
ret = device_probe(dev);
if (ret) {
debug("%s: GPIO %s device probe failed (ret=%d)\n",
__func__, GPIO_BANKE_NAME, ret);
return ret;
}
desc.dev = dev;
desc.flags = GPIOD_IS_OUT;
/* GPIO E8 controls the bottom port */
desc.offset = 8;
ret = dm_gpio_request(&desc, "usb_host_en0");
if (ret)
return ret;
dm_gpio_set_value(&desc, 1);
/* GPIO E9 controls the upper port */
desc.offset = 9;
ret = dm_gpio_request(&desc, "usb_host_en1");
if (ret)
return ret;
dm_gpio_set_value(&desc, 1);
return 0;
}