From 283e3a58f7b847976061d41c6cac75f2fd772d60 Mon Sep 17 00:00:00 2001
From: Jon Hunter <jonathanh@nvidia.com>
Date: Fri, 11 Nov 2022 21:33:53 +0000
Subject: [PATCH] arm64: tegra: Add more DT overlays

Add a new DT overlay for Tegra194 Jetson boards that populates the
necessary device-tree nodes for devices that use out-of-tree
drivers.

Add the DT overlays for OPTEE and the Tegra234 SBSA UART that have
been copied from the linux-stable branch. By adding them to this
repository we can remove from linux-stable branch because this branch
should only include changes from upstream.

Bug 3733730

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2770883
Reviewed-by: Bibek Basu <bbasu@nvidia.com>

Change-Id: Id7997557bb0dd8e95a0f9c0089c0fe131f1abe8a
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/device/hardware/nvidia/platform/t23x/concord-generic-dts/+/2807816
Reviewed-by: svcacv <svcacv@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
---
 Makefile                       |  1 +
 tegra234-sbsa-uart-overlay.dts | 42 ++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 tegra234-sbsa-uart-overlay.dts

diff --git a/Makefile b/Makefile
index 6d8f043..fc39150 100644
--- a/Makefile
+++ b/Makefile
@@ -7,6 +7,7 @@ makefile-path := platform/t23x/concord/dts/generic-dts
 dtbo-y += tegra234-p3737-0000+p3701-0000-overlay.dtbo
 dtbo-y += tegra234-jetson-overlay.dtbo
 dtbo-y += tegra234-carveouts-overlay.dtbo
+dtbo-y += tegra234-sbsa-uart-overlay.dtbo
 
 ifneq ($(dtb-y),)
 dtb-y := $(addprefix $(makefile-path)/,$(dtb-y))
diff --git a/tegra234-sbsa-uart-overlay.dts b/tegra234-sbsa-uart-overlay.dts
new file mode 100644
index 0000000..8e85dd4
--- /dev/null
+++ b/tegra234-sbsa-uart-overlay.dts
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2022, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Tegra234 Device-tree overlay for SBSA UART
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	overlay-name = "Tegra234 SBSA UART overlay";
+	compatible = "nvidia,tegra234";
+
+	fragment@0 {
+		target-path = "/bus@0/";
+		__overlay__ {
+			serial@31d0000 {
+				compatible = "arm,sbsa-uart";
+				reg = <0x31d0000 0x10000>;
+				interrupts = <GIC_SPI 285 IRQ_TYPE_LEVEL_HIGH>;
+				current-speed = <115200>;
+				status = "okay";
+			};
+		};
+	};
+};