arm64: dts: qcom: Add base SM8450 QRD DTS

Add DTS for Qualcomm QRD platform which uses SM8450 SoC and mark the
reserved nodes.
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211215043440.605624-6-vkoul@kernel.org

arch/arm64/boot/dts/qcom/Makefile

@@ -121,3 +121,4 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sm8350-microsoft-surface-duo2.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm8350-mtp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm8350-sony-xperia-sagami-pdx214.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm8350-sony-xperia-sagami-pdx215.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= sm8450-qrd.dtb

arch/arm64/boot/dts/qcom/sm8450-qrd.dts

+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) 2021, Linaro Limited
+ */
+
+/dts-v1/;
+
+#include "sm8450.dtsi"
+
+/ {
+	model = "Qualcomm Technologies, Inc. SM8450 QRD";
+	compatible = "qcom,sm8450-qrd", "qcom,sm8450";
+
+	aliases {
+		serial0 = &uart7;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&qupv3_id_0 {
+	status = "okay";
+};
+
+&tlmm {
+	gpio-reserved-ranges = <28 4>, <36 4>;
+};
+
+&uart7 {
+	status = "okay";
+};