From: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
To: rui.zhang@intel.com, edubezval@gmail.com
Cc: linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, robh+dt@kernel.org,
mark.rutland@arm.com, yamada.masahiro@socionext.com,
masami.hiramatsu@linaro.org, jaswinder.singh@linaro.org,
Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Subject: [PATCH v6 1/2] dt-bindings: thermal: add binding documentation for UniPhier thermal monitor
Date: Tue, 1 Aug 2017 17:04:50 +0900 [thread overview]
Message-ID: <1501574691-8961-2-git-send-email-hayashi.kunihiko@socionext.com> (raw)
In-Reply-To: <1501574691-8961-1-git-send-email-hayashi.kunihiko@socionext.com>
Add devicetree binding documentation for thermal monitor implemented on
Socionext UniPhier SoCs.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: Rob Herring <robh@kernel.org>
---
.../bindings/thermal/uniphier-thermal.txt | 64 ++++++++++++++++++++++
1 file changed, 64 insertions(+)
create mode 100644 Documentation/devicetree/bindings/thermal/uniphier-thermal.txt
diff --git a/Documentation/devicetree/bindings/thermal/uniphier-thermal.txt b/Documentation/devicetree/bindings/thermal/uniphier-thermal.txt
new file mode 100644
index 0000000..686c0b4
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/uniphier-thermal.txt
@@ -0,0 +1,64 @@
+* UniPhier Thermal bindings
+
+This describes the devicetree bindings for thermal monitor supported by
+PVT(Process, Voltage and Temperature) monitoring unit implemented on Socionext
+UniPhier SoCs.
+
+Required properties:
+- compatible :
+ - "socionext,uniphier-pxs2-thermal" : For UniPhier PXs2 SoC
+ - "socionext,uniphier-ld20-thermal" : For UniPhier LD20 SoC
+- interrupts : IRQ for the temperature alarm
+- #thermal-sensor-cells : Should be 0. See ./thermal.txt for details.
+
+Optional properties:
+- socionext,tmod-calibration: A pair of calibrated values referred from PVT,
+ in case that the values aren't set on SoC,
+ like a reference board.
+
+Example:
+
+ sysctrl@61840000 {
+ compatible = "socionext,uniphier-ld20-sysctrl",
+ "simple-mfd", "syscon";
+ reg = <0x61840000 0x10000>;
+ ...
+ pvtctl: pvtctl {
+ compatible = "socionext,uniphier-ld20-thermal";
+ interrupts = <0 3 1>;
+ #thermal-sensor-cells = <0>;
+ };
+ ...
+ };
+
+ thermal-zones {
+ cpu_thermal {
+ polling-delay-passive = <250>; /* 250ms */
+ polling-delay = <1000>; /* 1000ms */
+ thermal-sensors = <&pvtctl>;
+
+ trips {
+ cpu_crit: cpu_crit {
+ temperature = <110000>; /* 110C */
+ hysteresis = <2000>;
+ type = "critical";
+ };
+ cpu_alert: cpu_alert {
+ temperature = <100000>; /* 100C */
+ hysteresis = <2000>;
+ type = "passive";
+ };
+ };
+
+ cooling-maps {
+ map0 {
+ trip = <&cpu_alert>;
+ cooling-device = <&cpu0 (-1) (-1)>;
+ };
+ map1 {
+ trip = <&cpu_alert>;
+ cooling-device = <&cpu2 (-1) (-1)>;
+ };
+ };
+ };
+ };
--
2.7.4
next prev parent reply other threads:[~2017-08-01 8:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-01 8:04 [PATCH v6 0/2] add UniPhier thermal support Kunihiko Hayashi
2017-08-01 8:04 ` Kunihiko Hayashi [this message]
2017-08-01 8:04 ` [PATCH v6 2/2] thermal: uniphier: add UniPhier thermal driver Kunihiko Hayashi
2017-08-08 13:29 ` Zhang Rui
2017-08-10 13:15 ` Kunihiko Hayashi
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