linux-kernel - [PATCH 1/2] arm64: dts: qcom: msm8994: override nodes by label

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Date:   Sat,  2 Apr 2022 21:28:58 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 1/2] arm64: dts: qcom: msm8994: override nodes by label

Using node paths to extend or override a device tree node is error
prone.  If there was a typo error, a new node will be created instead of
extending the existing node.  This will lead to run-time errors that
could be hard to detect.

A mistyped label on the other hand, will cause a dtc compile error
(during build time).  This also reduces the indentation making the code
easier to read.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 .../dts/qcom/msm8994-huawei-angler-rev-101.dts     | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/msm8994-huawei-angler-rev-101.dts b/arch/arm64/boot/dts/qcom/msm8994-huawei-angler-rev-101.dts
index 0e3dd48f0dbf..c1fb9a7d6fa4 100644
--- a/arch/arm64/boot/dts/qcom/msm8994-huawei-angler-rev-101.dts
+++ b/arch/arm64/boot/dts/qcom/msm8994-huawei-angler-rev-101.dts
@@ -27,15 +27,13 @@ aliases {
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};
+};
 
-	soc {
-		serial@...1e000 {
-			status = "okay";
-			pinctrl-names = "default", "sleep";
-			pinctrl-0 = <&blsp1_uart2_default>;
-			pinctrl-1 = <&blsp1_uart2_sleep>;
-		};
-	};
+&blsp1_uart2 {
+	status = "okay";
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&blsp1_uart2_default>;
+	pinctrl-1 = <&blsp1_uart2_sleep>;
 };
 
 &tlmm {
-- 
2.32.0