diff options
| author | Andrejs Cainikovs <andrejs.cainikovs@toradex.com> | 2023-10-17 13:31:52 +0200 |
|---|---|---|
| committer | Andrejs Cainikovs <andrejs.cainikovs@toradex.com> | 2023-10-20 17:35:27 +0200 |
| commit | 2007c45f10e0b017aebd268d9fed3352be599f4f (patch) | |
| tree | 2983af332b80a86575fcf49ece8981522caaf05d | |
| parent | ef0fe41d1aa79966c8ebae2b7c93e3b8d721a066 (diff) | |
apalis-imx8: add USBH_EN gpio hog
USB host interface is not working on some Apalis Toradex carrier
boards with Apalis iMX8 SoM. This is due to USBH_EN pin, which
powers USB peripherals, having a strong pull-down on some boards,
and a weak pull-down on the others. This USBH_EN pin is left
unconfigured, which means it is in its default state at cold boot:
input with a strong pull-up. As a result, carrier boards with a
weak pull-down have this signal high enough to trigger power
delivery to USB peripherals, and opposite - boards with strong
pull-down on USBH_EN have this signal below the threshold needed
to trigger USB power delivery.
This change configures the USBH_EN pin as gpio hog, fixing this
issue for all Apalis carrier boards regardless of pull-down
resistor value.
Also, update apalis-imx8_defconfig via savedefconfig.
Upstream-Status: Submitted [https://lore.kernel.org/all/20231020152516.57338-1-andrejs.cainikovs@gmail.com/]
Signed-off-by: Andrejs Cainikovs <andrejs.cainikovs@toradex.com>
| -rw-r--r-- | arch/arm/dts/fsl-imx8qm-apalis-u-boot.dtsi | 6 | ||||
| -rw-r--r-- | configs/apalis-imx8_defconfig | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/dts/fsl-imx8qm-apalis-u-boot.dtsi b/arch/arm/dts/fsl-imx8qm-apalis-u-boot.dtsi index e0ee0ec694..155879dd75 100644 --- a/arch/arm/dts/fsl-imx8qm-apalis-u-boot.dtsi +++ b/arch/arm/dts/fsl-imx8qm-apalis-u-boot.dtsi @@ -139,6 +139,12 @@ &gpio4 { u-boot,dm-pre-proper; + + usbh_en { + gpio-hog; + gpios = <4 GPIO_ACTIVE_HIGH>; + output-high; + }; }; &gpio5 { diff --git a/configs/apalis-imx8_defconfig b/configs/apalis-imx8_defconfig index 42700e4571..0ff9b7218b 100644 --- a/configs/apalis-imx8_defconfig +++ b/configs/apalis-imx8_defconfig @@ -57,6 +57,7 @@ CONFIG_USB_FUNCTION_FASTBOOT=y CONFIG_FASTBOOT_BUF_ADDR=0x82800000 CONFIG_FASTBOOT_BUF_SIZE=0x08000000 CONFIG_FASTBOOT_FLASH=y +CONFIG_GPIO_HOG=y CONFIG_MXC_GPIO=y CONFIG_DM_I2C=y CONFIG_SYS_I2C_IMX_LPI2C=y |