linux-kernel - [PATCH 13/14] ARM: dts: Add devicetree for Supermicro X9SCi-LN4F based on WPCM450

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Date:   Sat, 20 Mar 2021 19:16:09 +0100
From:   Jonathan Neuschäfer <j.neuschaefer@....net>
To:     openbmc@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Jonathan Neuschäfer <j.neuschaefer@....net>,
        Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        soc@...nel.org, Rob Herring <robh+dt@...nel.org>,
        Avi Fishman <avifishman70@...il.com>,
        Tomer Maimon <tmaimon77@...il.com>,
        Tali Perry <tali.perry1@...il.com>,
        Patrick Venture <venture@...gle.com>,
        Nancy Yuen <yuenn@...gle.com>,
        Benjamin Fair <benjaminfair@...gle.com>
Subject: [PATCH 13/14] ARM: dts: Add devicetree for Supermicro X9SCi-LN4F based on WPCM450

The Supermicro X9SCi-LN4F is a server mainboard featuring the WPCM450
BMC. This patch adds a minimal devicetree for Linux running on the BMC.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@....net>
---
 arch/arm/boot/dts/Makefile                    |  2 +
 .../nuvoton-wpcm450-supermicro-x9sci-ln4f.dts | 40 +++++++++++++++++++
 2 files changed, 42 insertions(+)
 create mode 100644 arch/arm/boot/dts/nuvoton-wpcm450-supermicro-x9sci-ln4f.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 8e5d4ab4e75e6..cab5b3c906f83 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1305,6 +1305,8 @@ dtb-$(CONFIG_ARCH_VT8500) += \
 	wm8650-mid.dtb \
 	wm8750-apc8750.dtb \
 	wm8850-w70v2.dtb
+dtb-$(CONFIG_ARCH_WPCM450) += \
+	nuvoton-wpcm450-supermicro-x9sci-ln4f.dtb
 dtb-$(CONFIG_ARCH_ZYNQ) += \
 	zynq-cc108.dtb \
 	zynq-ebaz4205.dtb \
diff --git a/arch/arm/boot/dts/nuvoton-wpcm450-supermicro-x9sci-ln4f.dts b/arch/arm/boot/dts/nuvoton-wpcm450-supermicro-x9sci-ln4f.dts
new file mode 100644
index 0000000000000..83f27fbf4e939
--- /dev/null
+++ b/arch/arm/boot/dts/nuvoton-wpcm450-supermicro-x9sci-ln4f.dts
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+// Copyright 2021 Jonathan Neuschäfer
+
+/dts-v1/;
+
+/* The last 16 MiB are dedicated to the GPU */
+/memreserve/ 0x07000000 0x01000000;
+
+#include "nuvoton-wpcm450.dtsi"
+
+/ {
+	model = "Supermicro X9SCi-LN4F BMC";
+	compatible = "supermicro,x9sci-ln4f-bmc", "nuvoton,wpcm450";
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0 0x08000000>; /* 128 MiB */
+	};
+};
+
+&serial0 {
+	/*
+	 * Debug serial port. TX is exposed on the right pad of unpopulated
+	 * resistor R1247, RX on the right pad of R1162.
+	 */
+	status = "okay";
+};
+
+&serial1 {
+	/* "Serial over LAN" port. Connected to ttyS2 of the host system. */
+	status = "okay";
+};
+
+&watchdog0 {
+	status = "okay";
+};
--
2.30.2