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>

1 files changed, 30 insertions, 9 deletions

diff --git a/arch/arm/boot/dts/tegra124.dtsi b/arch/arm/boot/dts/tegra124.dtsi
index 61c36a36f0c9..187a36c6d0fc 100644
--- 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>;
+                                };
                         };
                 };