arm64: dts: renesas: r8a77961: Add thermal nodes

Add a device node for the Thermal Sensor/Chip Internal Voltage Monitor
in the R-Car M3-W+ (R8A77961) SoC, and describe the thermal zones.

According to the R-Car Gen3 Hardware Manual Errata for Revision 2.00 of
Jan 31, 2020, the thermal parameters for R-Car M3-W+ are the same as for
R-Car M3-W.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20200306110025.24747-1-geert+renesas@glider.be

diff --git a/arch/arm64/boot/dts/renesas/r8a77961.dtsi b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
index b691531..f710a7f 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a77961.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
@@ -474,6 +474,20 @@
                        #power-domain-cells = <1>;
                };
 
+               tsc: thermal@e6198000 {
+                       compatible = "renesas,r8a77961-thermal";
+                       reg = <0 0xe6198000 0 0x100>,
+                             <0 0xe61a0000 0 0x100>,
+                             <0 0xe61a8000 0 0x100>;
+                       interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>,
+                                    <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>,
+                                    <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&cpg CPG_MOD 522>;
+                       power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
+                       resets = <&cpg 522>;
+                       #thermal-sensor-cells = <1>;
+               };
+
                intc_ex: interrupt-controller@e61c0000 {
                        #interrupt-cells = <2>;
                        interrupt-controller;
@@ -1073,6 +1087,71 @@
                };
        };
 
+       thermal-zones {
+               sensor_thermal1: sensor-thermal1 {
+                       polling-delay-passive = <250>;
+                       polling-delay = <1000>;
+                       thermal-sensors = <&tsc 0>;
+                       sustainable-power = <3874>;
+
+                       trips {
+                               sensor1_crit: sensor1-crit {
+                                       temperature = <120000>;
+                                       hysteresis = <1000>;
+                                       type = "critical";
+                               };
+                       };
+               };
+
+               sensor_thermal2: sensor-thermal2 {
+                       polling-delay-passive = <250>;
+                       polling-delay = <1000>;
+                       thermal-sensors = <&tsc 1>;
+                       sustainable-power = <3874>;
+
+                       trips {
+                               sensor2_crit: sensor2-crit {
+                                       temperature = <120000>;
+                                       hysteresis = <1000>;
+                                       type = "critical";
+                               };
+                       };
+               };
+
+               sensor_thermal3: sensor-thermal3 {
+                       polling-delay-passive = <250>;
+                       polling-delay = <1000>;
+                       thermal-sensors = <&tsc 2>;
+                       sustainable-power = <3874>;
+
+                       cooling-maps {
+                               map0 {
+                                       trip = <&target>;
+                                       cooling-device = <&a57_0 2 4>;
+                                       contribution = <1024>;
+                               };
+                               map1 {
+                                       trip = <&target>;
+                                       cooling-device = <&a53_0 0 2>;
+                                       contribution = <1024>;
+                               };
+                       };
+                       trips {
+                               target: trip-point1 {
+                                       temperature = <100000>;
+                                       hysteresis = <1000>;
+                                       type = "passive";
+                               };
+
+                               sensor3_crit: sensor3-crit {
+                                       temperature = <120000>;
+                                       hysteresis = <1000>;
+                                       type = "critical";
+                               };
+                       };
+               };
+       };
+
        timer {
                compatible = "arm,armv8-timer";
                interrupts-extended = <&gic GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,