The px30-evb exposes uart2 through a uart-to-usb converter on the board but these pins are shared with the sdmmc controller. With both activated this results in a race condition depending in the probe order. Whichever of the two probes first will break the other peripheral.
The px30-evb also exposes uart5 through pin its pin headers, so it's way saner to use these pins for serial output and keep the sdmmc working in all cases. Signed-off-by: Heiko Stuebner <[email protected]> --- arch/arm64/boot/dts/rockchip/px30-evb.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/rockchip/px30-evb.dts b/arch/arm64/boot/dts/rockchip/px30-evb.dts index 6d50f6abcb48..80524afe94da 100644 --- a/arch/arm64/boot/dts/rockchip/px30-evb.dts +++ b/arch/arm64/boot/dts/rockchip/px30-evb.dts @@ -14,7 +14,7 @@ compatible = "rockchip,px30-evb", "rockchip,px30"; chosen { - stdout-path = "serial2:1500000n8"; + stdout-path = "serial5:115200n8"; }; adc-keys { @@ -454,7 +454,7 @@ status = "okay"; }; -&uart2 { +&uart5 { status = "okay"; }; -- 2.20.1
