linux-kernel - [PATCH 2/2] arm64: dts: ti: k3-am64: Use phandle to stdout UART node

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Message-ID: <20230601184933.358731-2-afd@ti.com>
Date:   Thu, 1 Jun 2023 13:49:33 -0500
From:   Andrew Davis <afd@...com>
To:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Wadim Egorov <w.egorov@...tec.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Andrew Davis <afd@...com>
Subject: [PATCH 2/2] arm64: dts: ti: k3-am64: Use phandle to stdout UART node

Using a phandle makes it clear which UART we are choosing without needing
to resolve through an alias first.

Especially useful for boards like the TI J721s2-EVM where the alias is
"serial2" but it actually resolves to the 8th UART instance(main_uart8).

Signed-off-by: Andrew Davis <afd@...com>
---
 arch/arm64/boot/dts/ti/k3-am642-evm.dts | 2 +-
 arch/arm64/boot/dts/ti/k3-am642-sk.dts  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index 2b7373207cb71..2760e2b5d6481 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -17,7 +17,7 @@ / {
 	model = "Texas Instruments AM642 EVM";
 
 	chosen {
-		stdout-path = "serial2:115200n8";
+		stdout-path = &main_uart0;
 	};
 
 	aliases {
diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index cab5fe9e7a784..7e67dcf66539e 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -17,7 +17,7 @@ / {
 	model = "Texas Instruments AM642 SK";
 
 	chosen {
-		stdout-path = "serial2:115200n8";
+		stdout-path = &main_uart0;
 	};
 
 	aliases {
-- 
2.39.2