From: Marek Szyprowski Date: Fri, 22 Jan 2021 05:52:18 +0000 (+0100) Subject: arm64: dts: meson: switch TFLASH_VDD_EN pin to open drain on Odroid-C4 X-Git-Tag: accepted/tizen/unified/20230118.172025~7896^2~13^2~15 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=daf12bee07b9e2f38216f58aca7ac4e4e66a7146;p=platform%2Fkernel%2Flinux-rpi.git arm64: dts: meson: switch TFLASH_VDD_EN pin to open drain on Odroid-C4 For the proper reboot Odroid-C4 board requires to switch TFLASH_VDD_EN pin to the high impedance mode, otherwise the board is stuck in the middle of loading early stages of the bootloader from SD card. This can be achieved by using the OPEN_DRAIN flag instead of the ACTIVE_HIGH, what will leave the pin in input mode to achieve high state (pin has the pull-up) and solve the issue. Suggested-by: Neil Armstrong Fixes: 326e57518b0d ("arm64: dts: meson-sm1: add support for Hardkernel ODROID-C4") Signed-off-by: Marek Szyprowski Acked-by: Martin Blumenstingl Signed-off-by: Kevin Hilman Link: https://lore.kernel.org/r/20210122055218.27241-1-m.szyprowski@samsung.com --- diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts index cf5a98f..a712273 100644 --- a/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts +++ b/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts @@ -52,7 +52,7 @@ regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; - gpio = <&gpio_ao GPIOAO_3 GPIO_ACTIVE_HIGH>; + gpio = <&gpio_ao GPIOAO_3 GPIO_OPEN_DRAIN>; enable-active-high; regulator-always-on; };