From ff578db7b69374fb632ed76e8fd5406f9466c5bd Mon Sep 17 00:00:00 2001
From: kartik <kkartik@nvidia.com>
Date: Thu, 20 Jan 2022 15:41:51 +0530
Subject: [PATCH] arm64: tegra: Enable UART instance on 40-pin header

On P3737 board, UART-A is available on 40-pin header. Enable UART-A for
P3737 and change the compatible string to "nvidia,tegra194-hsuart". This
allows supporting HW flow control and is the preferred choice for higher
baud rates.

Signed-off-by: kartik <kkartik@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 .../boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts      | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
index 85335c57c820..34d6a01ee1c6 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
@@ -14,6 +14,7 @@
 	aliases {
 		mmc3 = "/bus@0/mmc@3460000";
 		serial0 = &tcu;
+		serial1 = &uarta;
 	};
 
 	bus@0 {
@@ -1743,6 +1744,11 @@
 			};
 		};
 
+		serial@3100000 {
+			compatible = "nvidia,tegra194-hsuart";
+			status = "okay";
+		};
+
 		hda@3510000 {
 			nvidia,model = "NVIDIA Jetson AGX Orin HDA";
 		};