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 17:37:51 +0200 |
| commit | e5b76f7d318e1b08c843fca206908c88af53603b (patch) | |
| tree | f79ba135b5be4c8ef1383c649c860cdf6698c033 | |
| parent | 7234fc0743e32292de68a384c3d9880cba51d4c5 (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 29dd040240..2dad590d85 100644 --- a/arch/arm/dts/fsl-imx8qm-apalis-u-boot.dtsi +++ b/arch/arm/dts/fsl-imx8qm-apalis-u-boot.dtsi @@ -135,6 +135,12 @@ &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 1e34fee578..8ff0792ccc 100644 --- a/configs/apalis-imx8_defconfig +++ b/configs/apalis-imx8_defconfig @@ -61,6 +61,7 @@ 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 |