Re: [PATCH 2/4] thermal: rcar: enable to use thermal-zone on DT

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

This patch enables to use thermal-zone on DT if it was call as
"renesas,rcar-thermal-gen2".
Previous style is still supported by "renesas,rcar-thermal".

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 .../devicetree/bindings/thermal/rcar-thermal.txt   | 37 +++++++++++++++++-
 drivers/thermal/rcar_thermal.c                     | 45 +++++++++++++++++++---
 2 files changed, 74 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
index 332e625..904f204 100644
--- a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
+++ b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt

@@ -1,8 +1,9 @@
 * Renesas R-Car Thermal

 Required properties:
-- compatible           : "renesas,thermal-<soctype>", "renesas,rcar-thermal"
-                         as fallback.
+- compatible           : "renesas,thermal-<soctype>",
+                          "renesas,rcar-thermal-gen2" (with thermal-zone) or

+                          "renesas,rcar-thermal" (without thermal-zone) as fallback.
                          Examples with soctypes are:
                            - "renesas,thermal-r8a73a4" (R-Mobile APE6)
                            - "renesas,thermal-r8a7779" (R-Car H1)

@@ -36,3 +37,35 @@ thermal@e61f0000 {
                0xe61f0300 0x38>;
        interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
 };
+
+Example (with thermal-zone):
+
+thermal-zones {
+       cpu_thermal: cpu-thermal {
+               polling-delay-passive   = <1000>;
+               polling-delay           = <5000>;
+
+               thermal-sensors = <&thermal>;
+
+               trips {
+                       cpu-crit {
+                               temperature     = <1150000>;
+                               hysteresis      = <0>;
+                               type            = "critical";
+                       };
+               };
+               cooling-maps {
+               };
+       };
+};
+
+thermal: thermal@e61f0000 {
+       compatible =    "renesas,thermal-r8a7790",
+                       "renesas,rcar-thermal-gen2",
+                       "renesas,rcar-thermal";
+       reg = <0 0xe61f0000 0 0x14>, <0 0xe61f0100 0 0x38>;
+       interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
+       clocks = <&mstp5_clks R8A7790_CLK_THERMAL>;
+       power-domains = <&cpg_clocks>;
+       #thermal-sensor-cells = <0>;
+};