linux-kernel - [PATCH 2/2] riscv: sophgo: dts: add cooling maps for Milk-V Pioneer

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Message-Id: <5a36a2784d97ed7b1e06777cb0c3c14fe9185e99.1739351437.git.unicorn_wang@outlook.com>
Date: Wed, 12 Feb 2025 17:42:23 +0800
From: Chen Wang <unicornxw@...il.com>
To: aou@...s.berkeley.edu,
	unicorn_wang@...look.com,
	conor+dt@...nel.org,
	guoren@...nel.org,
	inochiama@...look.com,
	krzk+dt@...nel.org,
	palmer@...belt.com,
	paul.walmsley@...ive.com,
	robh@...nel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	chao.wei@...hgo.com,
	xiaoguang.xing@...hgo.com,
	chunzhi.lin@...hgo.com,
	inochiama@...il.com,
	sophgo@...ts.linux.dev
Subject: [PATCH 2/2] riscv: sophgo: dts: add cooling maps for Milk-V Pioneer

From: Chen Wang <unicorn_wang@...look.com>

The normal operating temperature range of SG2042 is -20 degrees
Celsius ~ 85 degrees Celsius.

Simultaneously monitor soc temperature and board temperature to
improve redundancy and safety.

Signed-off-by: Chen Wang <unicorn_wang@...look.com>
---
 .../boot/dts/sophgo/sg2042-milkv-pioneer.dts  | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
index 74c997ed8283..34645a5f6038 100644
--- a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
+++ b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
@@ -111,6 +111,28 @@ soc_hot: soc-hot {
 					type = "hot";
 				};
 			};
+
+			cooling-maps {
+				map0 {
+					trip = <&soc_active1>;
+					cooling-device = <&pwmfan 0 1>;
+				};
+
+				map1 {
+					trip = <&soc_active2>;
+					cooling-device = <&pwmfan 1 2>;
+				};
+
+				map2 {
+					trip = <&soc_active3>;
+					cooling-device = <&pwmfan 2 3>;
+				};
+
+				map3 {
+					trip = <&soc_hot>;
+					cooling-device = <&pwmfan 3 4>;
+				};
+			};
 		};
 
 		board-thermal {
@@ -125,6 +147,13 @@ board_active: board-active {
 					type = "active";
 				};
 			};
+
+			cooling-maps {
+				map4 {
+					trip = <&board_active>;
+					cooling-device = <&pwmfan 3 4>;
+				};
+			};
 		};
 	};
 };
-- 
2.34.1