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[PATCH v2 10/11] ARM: dtsi: sun8i: a33: add CPU thermal throttling

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This adds CPU thermal throttling for the Allwinner A33. It uses the
thermal sensor present in the SoC's GPADC.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
---

v2:
  - updated cooling-max-level to reflect newly added OPPs,

 arch/arm/boot/dts/sun8i-a33.dtsi | 47 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-a33.dtsi b/arch/arm/boot/dts/sun8i-a33.dtsi
index 704f2b0..df6e77f 100644
--- a/arch/arm/boot/dts/sun8i-a33.dtsi
+++ b/arch/arm/boot/dts/sun8i-a33.dtsi
@@ -43,6 +43,7 @@
  */
 
 #include "sun8i-a23-a33.dtsi"
+#include <dt-bindings/thermal/thermal.h>
 
 / {
 	cpu0_opp_table: opp_table0 {
@@ -139,6 +140,9 @@
 			clocks = <&ccu CLK_CPUX>;
 			clock-names = "cpu";
 			operating-points-v2 = <&cpu0_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <13>;
+			#cooling-cells = <2>;
 		};
 
 		cpu@1 {
@@ -182,6 +186,49 @@
 		};
 	};
 
+	thermal-zones {
+		cpu_thermal {
+			/* milliseconds */
+			polling-delay-passive = <250>;
+			polling-delay = <1000>;
+			thermal-sensors = <&rtp>;
+
+			cooling-maps {
+				map0 {
+					trip = <&cpu_alert0>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+				map1 {
+					trip = <&cpu_alert1>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
+			trips {
+				cpu_alert0: cpu_alert0 {
+					/* milliCelsius */
+					temperature = <75000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				cpu_alert1: cpu_alert1 {
+					/* milliCelsius */
+					temperature = <90000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+
+				cpu_crit: cpu_crit {
+					/* milliCelsius */
+					temperature = <110000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+		};
+	};
+
 	memory {
 		reg = <0x40000000 0x80000000>;
 	};
-- 
2.9.3

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[PATCH v2 00/11] add thermal throttling to Allwinner A33 SoC Quentin Schulz <quentin.schulz@free-electrons.com> - 2017-03-10 11:50 +0100
  [PATCH v2 03/11] ARM: dts: sun8i: sina33: add cpu-supply Quentin Schulz <quentin.schulz@free-electrons.com> - 2017-03-10 11:50 +0100
  [PATCH v2 07/11] iio: adc: sun4i-gpadc-iio: move code used in MFD probing to new function Quentin Schulz <quentin.schulz@free-electrons.com> - 2017-03-10 11:50 +0100
    Re: [PATCH v2 07/11] iio: adc: sun4i-gpadc-iio: move code used in MFD  probing to new function Quentin Schulz <quentin.schulz@free-electrons.com> - 2017-03-11 15:20 +0100
    Re: [PATCH v2 07/11] iio: adc: sun4i-gpadc-iio: move code used in MFD  probing to new function Jonathan Cameron <jic23@kernel.org> - 2017-03-13 22:00 +0100
  [PATCH v2 10/11] ARM: dtsi: sun8i: a33: add CPU thermal throttling Quentin Schulz <quentin.schulz@free-electrons.com> - 2017-03-10 11:50 +0100
  [PATCH v2 06/11] Documentation: DT: bindings: input: touschcreen: remove sun4i documentation Quentin Schulz <quentin.schulz@free-electrons.com> - 2017-03-10 11:50 +0100
  [PATCH v2 02/11] ARM: sun8i: a33: add all operating points Quentin Schulz <quentin.schulz@free-electrons.com> - 2017-03-10 11:50 +0100
  [PATCH v2 09/11] ARM: dtsi: sun8i: a33: add thermal sensor Quentin Schulz <quentin.schulz@free-electrons.com> - 2017-03-10 11:50 +0100
  [PATCH v2 01/11] ARM: sun8i: a33: add operating-points-v2 property to all nodes Quentin Schulz <quentin.schulz@free-electrons.com> - 2017-03-10 11:50 +0100

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