arm64: dts: uniphier: add nodes of thermal monitor and thermal zone for LD20

Add nodes of thermal monitor and thermal zone for UniPhier LD20 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 LD20.

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

diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
index a29c279b6e8e4c484b14c77047d1b8436103f6b3..bc8fe5529f6805349fc4428ce97a4a6815628858 100644 (file)
--- a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
@@ -7,6 +7,8 @@
  * SPDX-License-Identifier: (GPL-2.0+ OR MIT)
  */
 
+#include <dt-bindings/thermal/thermal.h>
+
 /memreserve/ 0x80000000 0x02000000;
 
 / {
@@ -46,6 +48,7 @@ cpu0: cpu@0 {
                        clocks = <&sys_clk 32>;
                        enable-method = "psci";
                        operating-points-v2 = <&cluster0_opp>;
+                       #cooling-cells = <2>;
                };
 
                cpu1: cpu@1 {
@@ -64,6 +67,7 @@ cpu2: cpu@100 {
                        clocks = <&sys_clk 33>;
                        enable-method = "psci";
                        operating-points-v2 = <&cluster1_opp>;
+                       #cooling-cells = <2>;
                };
 
                cpu3: cpu@101 {
@@ -173,6 +177,40 @@ timer {
                             <1 10 4>;
        };
 
+       thermal-zones {
+               cpu-thermal {
+                       polling-delay-passive = <250>;  /* 250ms */
+                       polling-delay = <1000>;         /* 1000ms */
+                       thermal-sensors = <&pvtctl>;
+
+                       trips {
+                               cpu_crit: cpu-crit {
+                                       temperature = <110000>; /* 110C */
+                                       hysteresis = <2000>;
+                                       type = "critical";
+                               };
+                               cpu_alert: cpu-alert {
+                                       temperature = <100000>; /* 100C */
+                                       hysteresis = <2000>;
+                                       type = "passive";
+                               };
+                       };
+
+                       cooling-maps {
+                               map0 {
+                                       trip = <&cpu_alert>;
+                                       cooling-device = <&cpu0
+                                           THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+                               };
+                               map1 {
+                                       trip = <&cpu_alert>;
+                                       cooling-device = <&cpu2
+                                           THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+                               };
+                       };
+               };
+       };
+
        soc@0 {
                compatible = "simple-bus";
                #address-cells = <1>;
@@ -410,6 +448,13 @@ sys_rst: reset {
                        watchdog {
                                compatible = "socionext,uniphier-wdt";
                        };
+
+                       pvtctl: pvtctl {
+                               compatible = "socionext,uniphier-ld20-thermal";
+                               interrupts = <0 3 4>;
+                               #thermal-sensor-cells = <0>;
+                               socionext,tmod-calibration = <0x0f22 0x68ee>;
+                       };
                };
 
                nand: nand@68000000 {