dt-bindings: thermal: tegra: Convert to json-schema

Convert the Tegra thermal bindings from the free-form text format to
json-schema.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>

Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt

-Tegra124 SOCTHERM thermal management system
-
-The SOCTHERM IP block contains thermal sensors, support for polled
-or interrupt-based thermal monitoring, CPU and GPU throttling based
-on temperature trip points, and handling external overcurrent
-notifications. It is also used to manage emergency shutdown in an
-overheating situation.
-
-Required properties :
-- compatible : For Tegra124, must contain "nvidia,tegra124-soctherm".
-  For Tegra132, must contain "nvidia,tegra132-soctherm".
-  For Tegra210, must contain "nvidia,tegra210-soctherm".
-- reg : Should contain at least 2 entries for each entry in reg-names:
-  - SOCTHERM register set
-  - Tegra CAR register set: Required for Tegra124 and Tegra210.
-  - CCROC register set: Required for Tegra132.
-- reg-names :  Should contain at least 2 entries:
-  - soctherm-reg
-  - car-reg
-  - ccroc-reg
-- interrupts : Defines the interrupt used by SOCTHERM
-- clocks : Must contain an entry for each entry in clock-names.
-  See ../clocks/clock-bindings.txt for details.
-- clock-names : Must include the following entries:
-  - tsensor
-  - soctherm
-- resets : Must contain an entry for each entry in reset-names.
-  See ../reset/reset.txt for details.
-- reset-names : Must include the following entries:
-  - soctherm
-- #thermal-sensor-cells : Should be 1. For a description of this property, see
-     Documentation/devicetree/bindings/thermal/thermal-sensor.yaml.
-    See <dt-bindings/thermal/tegra124-soctherm.h> for a list of valid values
-    when referring to thermal sensors.
-- throttle-cfgs: A sub-node which is a container of configuration for each
-    hardware throttle events. These events can be set as cooling devices.
-  * throttle events: Sub-nodes must be named as "light" or "heavy".
-      Properties:
-      - nvidia,priority: Each throttles has its own throttle settings, so the
-        SW need to set priorities for various throttle, the HW arbiter can select
-        the final throttle settings.
-        Bigger value indicates higher priority, In general, higher priority
-        translates to lower target frequency. SW needs to ensure that critical
-        thermal alarms are given higher priority, and ensure that there is
-        no race if priority of two vectors is set to the same value.
-        The range of this value is 1~100.
-      - nvidia,cpu-throt-percent: This property is for Tegra124 and Tegra210.
-        It is the throttling depth of pulse skippers, it's the percentage
-        throttling.
-      - nvidia,cpu-throt-level: This property is only for Tegra132, it is the
-        level of pulse skippers, which used to throttle clock frequencies. It
-        indicates cpu clock throttling depth, and the depth can be programmed.
-        Must set as following values:
-        TEGRA_SOCTHERM_THROT_LEVEL_LOW, TEGRA_SOCTHERM_THROT_LEVEL_MED
-        TEGRA_SOCTHERM_THROT_LEVEL_HIGH, TEGRA_SOCTHERM_THROT_LEVEL_NONE
-      - nvidia,gpu-throt-level: This property is for Tegra124 and Tegra210.
-        It is the level of pulse skippers, which used to throttle clock
-        frequencies. It indicates gpu clock throttling depth and can be
-        programmed to any of the following values which represent a throttling
-        percentage:
-        TEGRA_SOCTHERM_THROT_LEVEL_NONE (0%)
-        TEGRA_SOCTHERM_THROT_LEVEL_LOW (50%),
-        TEGRA_SOCTHERM_THROT_LEVEL_MED (75%),
-        TEGRA_SOCTHERM_THROT_LEVEL_HIGH (85%).
-      - #cooling-cells: Should be 1. This cooling device only support on/off state.
-        For a description of this property see:
-	Documentation/devicetree/bindings/thermal/thermal-cooling-devices.yaml
-
-      Optional properties: The following properties are T210 specific and
-      valid only for OCx throttle events.
-      - nvidia,count-threshold: Specifies the number of OC events that are
-        required for triggering an interrupt. Interrupts are not triggered if
-        the property is missing. A value of 0 will interrupt on every OC alarm.
-      - nvidia,polarity-active-low: Configures the polarity of the OC alaram
-        signal. If present, this means assert low, otherwise assert high.
-      - nvidia,alarm-filter: Number of clocks to filter event. When the filter
-        expires (which means the OC event has not occurred for a long time),
-        the counter is cleared and filter is rearmed. Default value is 0.
-      - nvidia,throttle-period-us: Specifies the number of uSec for which
-        throttling is engaged after the OC event is deasserted. Default value
-        is 0.
-
-Optional properties:
-- nvidia,thermtrips : When present, this property specifies the temperature at
-  which the soctherm hardware will assert the thermal trigger signal to the
-  Power Management IC, which can be configured to reset or shutdown the device.
-  It is an array of pairs where each pair represents a tsensor id followed by a
-  temperature in milli Celcius. In the absence of this property the critical
-  trip point will be used for thermtrip temperature.
-
-Note:
-- the "critical" type trip points will be used to set the temperature at which
-the SOC_THERM hardware will assert a thermal trigger if the "nvidia,thermtrips"
-property is missing. When the thermtrips property is present, the breach of a
-critical trip point is reported back to the thermal framework to implement
-software shutdown.
-
-- the "hot" type trip points will be set to SOC_THERM hardware as the throttle
-temperature. Once the temperature of this thermal zone is higher
-than it, it will trigger the HW throttle event.
-
-Example :
-
-	soctherm@700e2000 {
-		compatible = "nvidia,tegra124-soctherm";
-		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>;
-		clock-names = "tsensor", "soctherm";
-		resets = <&tegra_car 78>;
-		reset-names = "soctherm";
-
-		#thermal-sensor-cells = <1>;
-
-		nvidia,thermtrips = <TEGRA124_SOCTHERM_SENSOR_CPU 102500
-				     TEGRA124_SOCTHERM_SENSOR_GPU 103000>;
-
-		throttle-cfgs {
-			/*
-			 * When the "heavy" cooling device triggered,
-			 * the HW will skip cpu clock's pulse in 85% depth,
-			 * skip gpu clock's pulse in 85% level
-			 */
-			throttle_heavy: heavy {
-				nvidia,priority = <100>;
-				nvidia,cpu-throt-percent = <85>;
-				nvidia,gpu-throt-level = <TEGRA_SOCTHERM_THROT_LEVEL_HIGH>;
-
-				#cooling-cells = <1>;
-			};
-
-			/*
-			 * When the "light" cooling device triggered,
-			 * the HW will skip cpu clock's pulse in 50% depth,
-			 * skip gpu clock's pulse in 50% level
-			 */
-			throttle_light: light {
-				nvidia,priority = <80>;
-				nvidia,cpu-throt-percent = <50>;
-				nvidia,gpu-throt-level = <TEGRA_SOCTHERM_THROT_LEVEL_LOW>;
-
-				#cooling-cells = <1>;
-			};
-
-			/*
-			 * If these two devices are triggered in same time, the HW throttle
-			 * arbiter will select the highest priority as the final throttle
-			 * settings to skip cpu pulse.
-			 */
-
-			throttle_oc1: oc1 {
-				nvidia,priority = <50>;
-				nvidia,polarity-active-low;
-				nvidia,count-threshold = <100>;
-				nvidia,alarm-filter = <5100000>;
-				nvidia,throttle-period-us = <0>;
-				nvidia,cpu-throt-percent = <75>;
-				nvidia,gpu-throt-level =
-						<TEGRA_SOCTHERM_THROT_LEVEL_MED>;
-                        };
-		};
-	};
-
-Example: referring to Tegra132's "reg", "reg-names" and "throttle-cfgs" :
-
-	soctherm@700e2000 {
-		compatible = "nvidia,tegra132-soctherm";
-		reg = <0x0 0x700e2000 0x0 0x600  /* SOC_THERM reg_base */
-			0x0 0x70040000 0x0 0x200>; /* CCROC reg_base */;
-		reg-names = "soctherm-reg", "ccroc-reg";
-
-		throttle-cfgs {
-			/*
-			 * When the "heavy" cooling device triggered,
-			 * the HW will skip cpu clock's pulse in HIGH level
-			 */
-			throttle_heavy: heavy {
-				nvidia,priority = <100>;
-				nvidia,cpu-throt-level = <TEGRA_SOCTHERM_THROT_LEVEL_HIGH>;
-
-				#cooling-cells = <1>;
-			};
-
-			/*
-			 * When the "light" cooling device triggered,
-			 * the HW will skip cpu clock's pulse in MED level
-			 */
-			throttle_light: light {
-				nvidia,priority = <80>;
-				nvidia,cpu-throt-level = <TEGRA_SOCTHERM_THROT_LEVEL_MED>;
-
-				#cooling-cells = <1>;
-			};
-
-			/*
-			 * If these two devices are triggered in same time, the HW throttle
-			 * arbiter will select the highest priority as the final throttle
-			 * settings to skip cpu pulse.
-			 */
-
-		};
-	};
-
-Example: referring to thermal sensors :
-
-       thermal-zones {
-                cpu {
-                        polling-delay-passive = <1000>;
-                        polling-delay = <1000>;
-
-                        thermal-sensors =
-                                <&soctherm TEGRA124_SOCTHERM_SENSOR_CPU>;
-
-			trips {
-				cpu_shutdown_trip: shutdown-trip {
-					temperature = <102500>;
-					hysteresis = <1000>;
-					type = "critical";
-				};
-
-				cpu_throttle_trip: throttle-trip {
-					temperature = <100000>;
-					hysteresis = <1000>;
-					type = "hot";
-				};
-			};
-
-			cooling-maps {
-				map0 {
-					trip = <&cpu_throttle_trip>;
-					cooling-device = <&throttle_heavy 1 1>;
-				};
-			};
-                };
-	};