ARM: dts: uniphier: add nodes of thermal monitor and thermal zone for PXs2

Add nodes of thermal monitor and thermal zone for UniPhier PXs2 SoC.
The thermal monitor node is included in sysctrl. Since the efuse might not
have a calibrated value of thermal monitor, this patch gives the default
value for PXs2.

Furthermore, add cpuN labels for reference in cooling-device property.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

diff --git a/arch/arm/boot/dts/uniphier-pxs2.dtsi b/arch/arm/boot/dts/uniphier-pxs2.dtsi
index 90b020c950837d5d0c9d2a43d74d4a2c208b7463..995d2756dccc0e589226dd474140f0c0ae4d037e 100644 (file)
--- a/arch/arm/boot/dts/uniphier-pxs2.dtsi
+++ b/arch/arm/boot/dts/uniphier-pxs2.dtsi
@@ -7,6 +7,8 @@
  * SPDX-License-Identifier: (GPL-2.0+ OR MIT)
  */
 
+#include <dt-bindings/thermal/thermal.h>
+
 / {
        compatible = "socionext,uniphier-pxs2";
        #address-cells = <1>;
@@ -16,7 +18,7 @@
                #address-cells = <1>;
                #size-cells = <0>;
 
-               cpu@0 {
+               cpu0: cpu@0 {
                        device_type = "cpu";
                        compatible = "arm,cortex-a9";
                        reg = <0>;
@@ -24,9 +26,10 @@
                        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 +39,7 @@
                        operating-points-v2 = <&cpu_opp>;
                };
 
-               cpu@2 {
+               cpu2: cpu@2 {
                        device_type = "cpu";
                        compatible = "arm,cortex-a9";
                        reg = <2>;
@@ -46,7 +49,7 @@
                        operating-points-v2 = <&cpu_opp>;
                };
 
-               cpu@3 {
+               cpu3: cpu@3 {
                        device_type = "cpu";
                        compatible = "arm,cortex-a9";
                        reg = <3>;
@@ -114,6 +117,35 @@
                };
        };
 
+       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
+                                           THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+                               };
+                       };
+               };
+       };
+
        soc {
                compatible = "simple-bus";
                #address-cells = <1>;
@@ -358,6 +390,13 @@
                                compatible = "socionext,uniphier-pxs2-reset";
                                #reset-cells = <1>;
                        };
+
+                       pvtctl: pvtctl {
+                               compatible = "socionext,uniphier-pxs2-thermal";
+                               interrupts = <0 3 4>;
+                               #thermal-sensor-cells = <0>;
+                               socionext,tmod-calibration = <0x0f86 0x6844>;
+                       };
                };
 
                nand: nand@68000000 {