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Subject[PATCH v4 1/2] ARM: dts: uniphier: add nodes of thermal monitor and thermal zone for PXs2
Date
Add nodes of thermal monitor and thermal zone for UniPhier PXs2 SoC.
The thermal monitor is included in sysctrl.
Furthermore, add cpuN labels for reference in cooling-device property.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
---
arch/arm/boot/dts/uniphier-pxs2.dtsi | 43 ++++++++++++++++++++++++++++++++----
1 file changed, 39 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/uniphier-pxs2.dtsi b/arch/arm/boot/dts/uniphier-pxs2.dtsi
index 90b020c..c89e0d5 100644
--- a/arch/arm/boot/dts/uniphier-pxs2.dtsi
+++ b/arch/arm/boot/dts/uniphier-pxs2.dtsi
@@ -16,7 +16,7 @@
#address-cells = <1>;
#size-cells = <0>;

- cpu@0 {
+ cpu0: cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <0>;
@@ -24,9 +24,10 @@
enable-method = "psci";
next-level-cache = <&l2>;
operating-points-v2 = <&cpu_opp>;
+ #cooling-cells = <2>;
};

- cpu@1 {
+ cpu1: cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <1>;
@@ -36,7 +37,7 @@
operating-points-v2 = <&cpu_opp>;
};

- cpu@2 {
+ cpu2: cpu@2 {
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <2>;
@@ -46,7 +47,7 @@
operating-points-v2 = <&cpu_opp>;
};

- cpu@3 {
+ cpu3: cpu@3 {
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <3>;
@@ -114,6 +115,34 @@
};
};

+ 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";
+ };
+ };
+
+ cooling-maps {
+ map {
+ trip = <&cpu_alert>;
+ cooling-device = <&cpu0 (-1) (-1)>;
+ };
+ };
+ };
+ };
+
soc {
compatible = "simple-bus";
#address-cells = <1>;
@@ -358,6 +387,12 @@
compatible = "socionext,uniphier-pxs2-reset";
#reset-cells = <1>;
};
+
+ pvtctl: pvtctl {
+ compatible = "socionext,uniphier-pxs2-thermal";
+ interrupts = <0 3 4>;
+ #thermal-sensor-cells = <0>;
+ };
};

nand: nand@68000000 {
--
2.7.4
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