arm64: dts: meson: switch TFLASH_VDD_EN pin to open drain on Odroid-C4
authorMarek Szyprowski <m.szyprowski@samsung.com>
Fri, 22 Jan 2021 05:52:18 +0000 (06:52 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 10 Feb 2021 08:29:13 +0000 (09:29 +0100)
commitee1709a311cd0a1d21e53724c38db78eb5cffe6e
tree26247083b56e85d184156afd7af5b9d0ad6c445f
parent6f5ee57a68c7d38a9f692a8ba99fc23dbbf1840a
arm64: dts: meson: switch TFLASH_VDD_EN pin to open drain on Odroid-C4

[ Upstream commit daf12bee07b9e2f38216f58aca7ac4e4e66a7146 ]

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 <narmstrong@baylibre.com>
Fixes: 326e57518b0d ("arm64: dts: meson-sm1: add support for Hardkernel ODROID-C4")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20210122055218.27241-1-m.szyprowski@samsung.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts