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board: qcs404-evb: Enable USB3 specific PMIC GPIO

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For USB3 host controller to detect devices on the bus it is required to
enable a PMIC GPIO: usb_vbus_boost_pin. So enable that during board
specific initialization.

And since this PMIC GPIO parsing is quite u-boot specific, so add a
DT override to qcs404-evb-uboot.dtsi to represent usb_vbus_boost_pin.

Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
This commit is contained in:
Sumit Garg 2022-08-04 19:57:20 +05:30 committed by Tom Rini
parent 9c96a0c62a
commit 106822de5e
2 changed files with 35 additions and 0 deletions
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6
arch/arm/dts/qcs404-evb-uboot.dtsi
View file

@ -22,3 +22,9 @@
};
};
};
&pms405_gpios {
usb_vbus_boost_pin {
gpios = <&pms405_gpios 2 0>;
};
};

29
board/qualcomm/qcs404-evb/qcs404-evb.c
View file

@ -11,6 +11,7 @@
#include <env.h>
#include <init.h>
#include <asm/cache.h>
#include <asm/gpio.h>
#include <asm/global_data.h>
#include <fdt_support.h>
#include <asm/arch/dram.h>
@ -24,6 +25,34 @@ int dram_init(void)
int board_init(void)
{
struct udevice *pmic_gpio;
struct gpio_desc usb_vbus_boost_pin;
int ret, node;
ret = uclass_get_device_by_name(UCLASS_GPIO,
"pms405_gpios@c000",
&pmic_gpio);
if (ret < 0) {
printf("Failed to find pms405_gpios@c000 node.\n");
return ret;
}
node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pmic_gpio),
"usb_vbus_boost_pin");
if (node < 0) {
printf("Failed to find usb_hub_reset_pm dt node.\n");
return node;
}
ret = gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
&usb_vbus_boost_pin, 0);
if (ret < 0) {
printf("Failed to request usb_hub_reset_pm gpio.\n");
return ret;
}
dm_gpio_set_dir_flags(&usb_vbus_boost_pin,
GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
return 0;
}