dt-bindings: thermal: Add binding document for SR thermal

Add binding document for supported thermal implementation
in Stingray.

Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Pramod Kumar <pramod.kumar@broadcom.com>
Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

diff --git a/Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt b/Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt
new file mode 100644 (file)
index 0000000..3ab3302
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt
@@ -0,0 +1,105 @@
+* Broadcom Stingray Thermal
+
+This binding describes thermal sensors that is part of Stingray SoCs.
+
+Required properties:
+- compatible : Must be "brcm,sr-thermal"
+- reg : Memory where tmon data will be available.
+- brcm,tmon-mask: A one cell bit mask of valid TMON sources.
+                  Each bit represents single TMON source.
+- #thermal-sensor-cells : Thermal sensor phandler
+- polling-delay: Max number of milliseconds to wait between polls.
+- thermal-sensors: A list of thermal sensor phandles and specifier.
+                   specifier value is tmon ID and it should be
+                   in correspond with brcm,tmon-mask.
+- temperature: trip temperature threshold in millicelsius.
+
+Example:
+       tmons {
+               compatible = "simple-bus";
+               #address-cells = <1>;
+               #size-cells = <1>;
+               ranges = <0x0 0x0 0x8f100000 0x100>;
+
+               tmon: tmon@0 {
+                       compatible = "brcm,sr-thermal";
+                       reg = <0x0 0x40>;
+                       brcm,tmon-mask = <0x3f>;
+                       #thermal-sensor-cells = <1>;
+               };
+       };
+
+       thermal-zones {
+               ihost0_thermal: ihost0-thermal {
+                       polling-delay-passive = <0>;
+                       polling-delay = <1000>;
+                       thermal-sensors = <&tmon 0>;
+                       trips {
+                               cpu-crit {
+                                       temperature = <105000>;
+                                       hysteresis = <0>;
+                                       type = "critical";
+                               };
+                       };
+               };
+               ihost1_thermal: ihost1-thermal {
+                       polling-delay-passive = <0>;
+                       polling-delay = <1000>;
+                       thermal-sensors = <&tmon 1>;
+                       trips {
+                               cpu-crit {
+                                       temperature = <105000>;
+                                       hysteresis = <0>;
+                                       type = "critical";
+                               };
+                       };
+               };
+               ihost2_thermal: ihost2-thermal {
+                       polling-delay-passive = <0>;
+                       polling-delay = <1000>;
+                       thermal-sensors = <&tmon 2>;
+                       trips {
+                               cpu-crit {
+                                       temperature = <105000>;
+                                       hysteresis = <0>;
+                                       type = "critical";
+                               };
+                       };
+               };
+               ihost3_thermal: ihost3-thermal {
+                       polling-delay-passive = <0>;
+                       polling-delay = <1000>;
+                       thermal-sensors = <&tmon 3>;
+                       trips {
+                               cpu-crit {
+                                       temperature = <105000>;
+                                       hysteresis = <0>;
+                                       type = "critical";
+                               };
+                       };
+               };
+               crmu_thermal: crmu-thermal {
+                       polling-delay-passive = <0>;
+                       polling-delay = <1000>;
+                       thermal-sensors = <&tmon 4>;
+                       trips {
+                               cpu-crit {
+                                       temperature = <105000>;
+                                       hysteresis = <0>;
+                                       type = "critical";
+                               };
+                       };
+               };
+               nitro_thermal: nitro-thermal {
+                       polling-delay-passive = <0>;
+                       polling-delay = <1000>;
+                       thermal-sensors = <&tmon 5>;
+                       trips {
+                               cpu-crit {
+                                       temperature = <105000>;
+                                       hysteresis = <0>;
+                                       type = "critical";
+                               };
+                       };
+               };
+       };