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Message-ID: <20250816093209.2600355-3-uwu@icenowy.me>
Date: Sat, 16 Aug 2025 17:32:08 +0800
From: Icenowy Zheng <uwu@...nowy.me>
To: Drew Fustini <fustini@...nel.org>,
Guo Ren <guoren@...nel.org>,
Fu Wei <wefu@...hat.com>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: Han Gao <rabenda.cn@...il.com>,
Yao Zi <ziyao@...root.org>,
linux-riscv@...ts.infradead.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
Icenowy Zheng <uwu@...nowy.me>
Subject: [PATCH 2/3] riscv: dts: thead: th1520: add initial thermal zones
As the PVT sensors's "T" means thermal, add thermal zones for the
thermal sensors.
Because of the current lack of DVFS, only a critical trip point is added
now.
Signed-off-by: Icenowy Zheng <uwu@...nowy.me>
---
arch/riscv/boot/dts/thead/th1520.dtsi | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dts/thead/th1520.dtsi
index e9c81bdabed8a..a48eca5def606 100644
--- a/arch/riscv/boot/dts/thead/th1520.dtsi
+++ b/arch/riscv/boot/dts/thead/th1520.dtsi
@@ -701,4 +701,29 @@ gpio4: gpio-controller@0 {
};
};
};
+
+ thermal-zones {
+ cpu-thermal {
+ polling-delay-passive = <250>;
+ polling-delay = <15000>;
+
+ thermal-sensors = <&pvt 0>;
+
+ trips {
+ cpu_crit: crit-trip {
+ /* milliCelsius */
+ temperature = <110000>;
+ hysteresis = <2000>;
+ type = "critical";
+ };
+ };
+ };
+
+ ddrc-thermal {
+ polling-delay-passive = <250>;
+ polling-delay = <15000>;
+
+ thermal-sensors = <&pvt 1>;
+ };
+ };
};
--
2.50.1
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