From: Marek Szyprowski Date: Fri, 18 Dec 2020 10:43:45 +0000 (+0100) Subject: ARM: dts: meson: switch TFLASH_VDD_EN pin to open drain on Odroid-C4 X-Git-Url: http://git.dujemihanovic.xyz/img/sics.gif?a=commitdiff_plain;h=21a1bc6a900c33efe4da4cc1b33efcfa543fd9d0;p=u-boot.git ARM: 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 if the ACTIVE_HIGH, what will leave the pin in input to achieve high state (pin has the pull-up) and solve the issue. Suggested-by: Neil Armstrong Signed-off-by: Marek Szyprowski Acked-by: Neil Armstrong Signed-off-by: Neil Armstrong --- diff --git a/arch/arm/dts/meson-sm1-odroid-c4-u-boot.dtsi b/arch/arm/dts/meson-sm1-odroid-c4-u-boot.dtsi index c431988075..fbcc8287c5 100644 --- a/arch/arm/dts/meson-sm1-odroid-c4-u-boot.dtsi +++ b/arch/arm/dts/meson-sm1-odroid-c4-u-boot.dtsi @@ -11,3 +11,7 @@ snps,reset-delays-us = <0 10000 1000000>; snps,reset-active-low; }; + +&tflash_vdd { + gpio = <&gpio_ao GPIOAO_3 GPIO_OPEN_DRAIN>; +};