linux-kernel - [PATCH 07/13] arm64: dts: rockchip: move px30-evb console output to uart 5

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Date:   Tue, 17 Sep 2019 10:26:53 +0200
From:   Heiko Stuebner <heiko@...ech.de>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        robh+dt@...nel.org, mark.rutland@....com,
        linux-rockchip@...ts.infradead.org,
        christoph.muellner@...obroma-systems.com,
        Heiko Stuebner <heiko@...ech.de>
Subject: [PATCH 07/13] arm64: dts: rockchip: move px30-evb console output to uart 5

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 <heiko@...ech.de>
---
 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