linux-kernel - [PATCH v2 08/10] arm64: dts: qcom: Add SDM632 device tree

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Date:   Sun, 20 Feb 2022 21:19:01 +0100
From:   Luca Weiss <luca@...tu.xyz>
To:     linux-arm-msm@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        Vladimir Lypak <vladimir.lypak@...il.com>,
        Gabriel David <ultracoolguy@...root.org>,
        Luca Weiss <luca@...tu.xyz>, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 08/10] arm64: dts: qcom: Add SDM632 device tree

From: Vladimir Lypak <vladimir.lypak@...il.com>

Snapdragon 632 is based on msm8953 with some minor differences, mostly
in the CPUs.

SDM632 is using Kryo 250 instead of ARM Cortex A53 and has some
differences in the thermal zones, mainly there being only one thermal
zones for the first 4 cores (efficiency cores) but keeps one thermal
zone per core for the remaining 4 cores (performance cores).

Co-developed-by: Gabriel David <ultracoolguy@...root.org>
Signed-off-by: Gabriel David <ultracoolguy@...root.org>
Signed-off-by: Vladimir Lypak <vladimir.lypak@...il.com>
Signed-off-by: Luca Weiss <luca@...tu.xyz>
---
Changes in v2:
- add missing thermal zone for cpu0-3 (and add details to commit msg)
- improve style of overriding other thermal zones
- override compatible for CPUs to qcom,kryo250

 arch/arm64/boot/dts/qcom/sdm632.dtsi | 81 ++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/sdm632.dtsi

diff --git a/arch/arm64/boot/dts/qcom/sdm632.dtsi b/arch/arm64/boot/dts/qcom/sdm632.dtsi
new file mode 100644
index 000000000000..645b9f6a801f
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/sdm632.dtsi
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/* Copyright (c) 2022, The Linux Foundation. All rights reserved. */
+
+#include "msm8953.dtsi"
+
+/ {
+	thermal-zones {
+		/delete-node/cpu1-thermal;
+		/delete-node/cpu2-thermal;
+		/delete-node/cpu3-thermal;
+
+		cpu0-thermal {
+			thermal-sensors = <&tsens0 13>;
+
+			cooling-maps {
+				map0 {
+					cooling-device = <&CPU0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+							 <&CPU1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+							 <&CPU2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+							 <&CPU3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+		};
+
+		cpu4-thermal {
+			thermal-sensors = <&tsens0 5>;
+		};
+
+		cpu5-thermal {
+			thermal-sensors = <&tsens0 6>;
+		};
+
+		cpu6-thermal {
+			thermal-sensors = <&tsens0 7>;
+		};
+
+		cpu7-thermal {
+			thermal-sensors = <&tsens0 8>;
+		};
+	};
+};
+
+/*
+ * SDM632 uses Kryo 250 instead of Cortex A53
+ * CPU0-3 are efficiency cores, CPU4-7 are performance cores
+ */
+&CPU0 {
+	compatible = "qcom,kryo250";
+};
+
+&CPU1 {
+	compatible = "qcom,kryo250";
+};
+
+&CPU2 {
+	compatible = "qcom,kryo250";
+};
+
+&CPU3 {
+	compatible = "qcom,kryo250";
+};
+
+&CPU4 {
+	compatible = "qcom,kryo250";
+	capacity-dmips-mhz = <1980>;
+};
+
+&CPU5 {
+	compatible = "qcom,kryo250";
+	capacity-dmips-mhz = <1980>;
+};
+
+&CPU6 {
+	compatible = "qcom,kryo250";
+	capacity-dmips-mhz = <1980>;
+};
+
+&CPU7 {
+	compatible = "qcom,kryo250";
+	capacity-dmips-mhz = <1980>;
+};
-- 
2.35.1