arm: tegra: set hot trips for Tegra124

Enable throttle function for SOC_THERM.
Set "hot" trips for cpu and gpu thermal zones, which
can trigger the SOC_THERM hardware throttle.

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

diff --git a/arch/arm/boot/dts/tegra124.dtsi b/arch/arm/boot/dts/tegra124.dtsi
index 61c36a3..187a36c 100644 (file)
--- a/arch/arm/boot/dts/tegra124.dtsi
+++ b/arch/arm/boot/dts/tegra124.dtsi
@@ -851,7 +851,9 @@
 
        soctherm: thermal-sensor@700e2000 {
                compatible = "nvidia,tegra124-soctherm";
-               reg = <0x0 0x700e2000 0x0 0x1000>;
+               reg = <0x0 0x700e2000 0x0 0x600 /* SOC_THERM reg_base */
+                       0x0 0x60006000 0x0 0x400>; /* CAR reg_base */
+               reg-names = "soctherm-reg", "car-reg";
                interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
                clocks = <&tegra_car TEGRA124_CLK_TSENSOR>,
                        <&tegra_car TEGRA124_CLK_SOC_THERM>;
@@ -859,6 +861,15 @@
                resets = <&tegra_car 78>;
                reset-names = "soctherm";
                #thermal-sensor-cells = <1>;
+
+               throttle-cfgs {
+                       throttle_heavy: heavy {
+                               nvidia,priority = <100>;
+                               nvidia,cpu-throt-percent = <85>;
+
+                               #cooling-cells = <2>;
+                       };
+               };
        };
 
        dfll: clock@70110000 {
@@ -1161,13 +1172,18 @@
                                        hysteresis = <0>;
                                        type = "critical";
                                };
+                               cpu_throttle_trip: throttle-trip {
+                                       temperature = <100000>;
+                                       hysteresis = <1000>;
+                                       type = "hot";
+                               };
                        };
 
                        cooling-maps {
-                               /*
-                                * There are currently no cooling maps,
-                                * because there are no cooling devices.
-                                */
+                               map0 {
+                                       trip = <&cpu_throttle_trip>;
+                                       cooling-device = <&throttle_heavy 1 1>;
+                               };
                        };
                };
 
@@ -1207,13 +1223,18 @@
                                        hysteresis = <0>;
                                        type = "critical";
                                };
+                               gpu_throttle_trip: throttle-trip {
+                                       temperature = <99000>;
+                                       hysteresis = <1000>;
+                                       type = "hot";
+                               };
                        };
 
                        cooling-maps {
-                               /*
-                                * There are currently no cooling maps,
-                                * because there are no cooling devices.
-                                */
+                               map0 {
+                                       trip = <&gpu_throttle_trip>;
+                                       cooling-device = <&throttle_heavy 1 1>;
+                               };
                        };
                };