linux-kernel - [PATCH 1/5] arm64: dts: qcom: qrb2210-rb1: Swap UART index

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Date:   Wed, 06 Sep 2023 11:24:55 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH 1/5] arm64: dts: qcom: qrb2210-rb1: Swap UART index

Newer RB1 board revisions have a debug UART on QUP0. Sadly, it looks
like even when ordering one in retail, customers receive prototype
boards with "Enginering Sample" written on them.

Use QUP4 for UART to make all known RB1 boards boot.

Fixes: e18771961336 ("arm64: dts: qcom: Add initial QTI RB1 device tree")
Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 arch/arm64/boot/dts/qcom/qrb2210-rb1.dts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts b/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts
index eadba066972e..5cda5b761455 100644
--- a/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts
+++ b/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts
@@ -13,7 +13,7 @@ / {
 	compatible = "qcom,qrb2210-rb1", "qcom,qrb2210", "qcom,qcm2290";
 
 	aliases {
-		serial0 = &uart0;
+		serial0 = &uart4;
 		sdhc1 = &sdhc_1;
 		sdhc2 = &sdhc_2;
 	};
@@ -357,7 +357,7 @@ key_volp_n: key-volp-n-state {
 };
 
 /* UART connected to the Micro-USB port via a FTDI chip */
-&uart0 {
+&uart4 {
 	compatible = "qcom,geni-debug-uart";
 	status = "okay";
 };

-- 
2.42.0