Add nodes of thermal monitor and thermal zone for UniPhier LD20 SoC.
The thermal monitor is included in sysctrl.

Furthermore, since SoC installed in the reference board doesn't have a
calibrated value of thermal monitor, this patch gives the default value
for LD20 Reference board via device-tree property.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
---
 .../arm64/boot/dts/socionext/uniphier-ld20-ref.dts | 25 ++++++++++++++++++++++
 arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi   |  6 ++++++
 2 files changed, 31 insertions(+)

diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts b/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts
index 609162a..79e1363 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts

@@ -73,6 +73,27 @@
                i2c4 = &i2c4;
                i2c5 = &i2c5;
        };
+
+       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";
+                               };
+                       };
+               };
+       };
 };

 &ethsc {

@@ -86,3 +107,7 @@
 &i2c0 {
        status = "okay";
 };
+
+&pvtctl {
+       socionext,tmod-calibration = <0x0f22 0x68ee>;
+};

diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
index a6b3a70..effa2e3 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi

@@ -417,6 +417,12 @@
                                compatible = "socionext,uniphier-ld20-reset";
                                #reset-cells = <1>;
                        };
+
+                       pvtctl: pvtctl {
+                               compatible = "socionext,uniphier-ld20-thermal";
+                               interrupts = <0 3 1>;
+                               #thermal-sensor-cells = <0>;
+                       };