linux-kernel - [PATCH 4/4] arm64: dts: uniphier: add nodes of thermal monitor and thermal zone for LD20

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Message-Id: <1496049345-14649-5-git-send-email-hayashi.kunihiko@socionext.com>
Date:   Mon, 29 May 2017 18:15:45 +0900
From:   Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
To:     rui.zhang@...el.com, edubezval@...il.com
Cc:     linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, robh+dt@...nel.org,
        mark.rutland@....com, devicetree@...r.kernel.org,
        yamada.masahiro@...ionext.com, masami.hiramatsu@...aro.org,
        jaswinder.singh@...aro.org,
        Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
Subject: [PATCH 4/4] arm64: dts: uniphier: add nodes of thermal monitor and thermal zone for LD20

Add nodes of thermal monitor and thermal zone for UniPhier LD20 SoC.
The thermal monitor is included in sysctrl.

Furthermore, since SoC installed in the reference board doesn't have a
calibrated value of thermal monitor, this patch gives the default value
for LD20 Reference board via device-tree property.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
---
 .../arm64/boot/dts/socionext/uniphier-ld20-ref.dts | 25 ++++++++++++++++++++++
 arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi   |  6 ++++++
 2 files changed, 31 insertions(+)

diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts b/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts
index 609162a..79e1363 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts
@@ -73,6 +73,27 @@
 		i2c4 = &i2c4;
 		i2c5 = &i2c5;
 	};
+
+	thermal-zones {
+		cpu_thermal {
+			polling-delay-passive = <250>;	/* 250ms */
+			polling-delay = <1000>;		/* 1000ms */
+			thermal-sensors = <&pvtctl>;
+
+			trips {
+				cpu_crit: cpu_crit {
+					temperature = <95000>;	/* 95C */
+					hysteresis = <2000>;
+					type = "critical";
+				};
+				cpu_alert: cpu_alert {
+					temperature = <85000>;	/* 85C */
+					hysteresis = <2000>;
+					type = "passive";
+				};
+			};
+		};
+	};
 };
 
 &ethsc {
@@ -86,3 +107,7 @@
 &i2c0 {
 	status = "okay";
 };
+
+&pvtctl {
+	socionext,tmod-calibration = <0x0f22 0x68ee>;
+};
diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
index a6b3a70..effa2e3 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
@@ -417,6 +417,12 @@
 				compatible = "socionext,uniphier-ld20-reset";
 				#reset-cells = <1>;
 			};
+
+			pvtctl: pvtctl {
+				compatible = "socionext,uniphier-ld20-thermal";
+				interrupts = <0 3 1>;
+				#thermal-sensor-cells = <0>;
+			};
 		};
 	};
 };
-- 
2.7.4