linux-kernel - [PATCH 3/3] arm64: dts: qcom: Add initial support for Xiaomi Redmi Note 8T

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Date:   Sun, 17 May 2020 04:54:08 -0700
From:   Eli Riggs <eli@....li>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, Eli Riggs <eli@....li>
Subject: [PATCH 3/3] arm64: dts: qcom: Add initial support for Xiaomi Redmi Note 8T

Adds initial device tree for Xiaomi Redmi Note 8T, codename xiaomi-willow.
It uses the sm6125 SoC. Currently only boots into initrd shell over UART.
Requires appended DTB with qcom,board-id = <0x22 0x0> and
qcom,msm-id = <0x18a 0x10000> to actually boot.

Signed-off-by: Eli Riggs <eli@....li>
---
 arch/arm64/boot/dts/qcom/Makefile             |  1 +
 .../boot/dts/qcom/sm6125-xiaomi-willow.dts    | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/sm6125-xiaomi-willow.dts

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index cc103f7020fd6..060aa98200e47 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -22,6 +22,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-cheza-r3.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-db845c.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-mtp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sdm850-lenovo-yoga-c630.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= sm6125-xiaomi-willow.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm8150-mtp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm8250-mtp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= qcs404-evb-1000.dtb
diff --git a/arch/arm64/boot/dts/qcom/sm6125-xiaomi-willow.dts b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-willow.dts
new file mode 100644
index 0000000000000..444b32ccb9d48
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-willow.dts
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright (c) 2020, Eli Riggs <eli@....li>
+
+/dts-v1/;
+
+#include "sm6125.dtsi"
+
+/ {
+	model = "Xiaomi Redmi Note 8T";
+	compatible = "xiaomi,willow", "qcom,sm6125";
+
+	aliases {
+		serial0 = &qupv3_se4_2uart;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
-- 
2.20.1