[PATCH v2] dt-bindings: thermal: rcar-thermal: convert bindings to json-schema

[Simon Horman <horms+renesas@verge.net.au>]

Convert Renesas R-Car Thermal bindings documentation to json-schema.
Also name bindings documentation file according to the compat string
being documented.

As a side effect of this change all currently supported/used compat
strings are listed while no while card compat string is documented.
This, in my opinion, is desirable as only supported hardware should
be documented.

A possible follow-up is to deprecate renesas,rcar-thermal
after describing thermal zones in the DT for R-Mobile APE6 and R-Car H1.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
Based on v5.3
Tested using:
  ARCH=arm make dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/thermal/renesas,rcar-thermal.yaml

v2
* Update compat strings to reflect that:
  - RZ/G1M and RZ/G1N are not compatible with renesas,rcar-gen2-thermal
  - R-Car V3M, E3 and D3, and RZ/G2E are not compatible with
    renesas,rcar-thermal
* Update reg property
  - Drop uninformative comment
  - Do not limit to a maximum of one item
* Add SPDX tag
---
 .../devicetree/bindings/thermal/rcar-thermal.txt   |  78 --------------
 .../bindings/thermal/renesas,rcar-thermal.yaml     | 116 +++++++++++++++++++++
 2 files changed, 116 insertions(+), 78 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/thermal/rcar-thermal.txt
 create mode 100644 Documentation/devicetree/bindings/thermal/renesas,rcar-thermal.yaml

diff --git a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt b/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
deleted file mode 100644
index 196112d23b1e..000000000000
--- a/Documentation/devicetree/bindings/thermal/rcar-thermal.txt
+++ /dev/null
@@ -1,78 +0,0 @@
-* Renesas R-Car Thermal
-
-Required properties:
-- compatible		: "renesas,thermal-<soctype>",
-			   "renesas,rcar-gen2-thermal" (with thermal-zone) or
-			   "renesas,rcar-thermal" (without thermal-zone) as
-                           fallback except R-Car V3M/E3/D3 and RZ/G2E.
-			  Examples with soctypes are:
-			    - "renesas,thermal-r8a73a4" (R-Mobile APE6)
-			    - "renesas,thermal-r8a7743" (RZ/G1M)
-			    - "renesas,thermal-r8a7744" (RZ/G1N)
-			    - "renesas,thermal-r8a774c0" (RZ/G2E)
-			    - "renesas,thermal-r8a7779" (R-Car H1)
-			    - "renesas,thermal-r8a7790" (R-Car H2)
-			    - "renesas,thermal-r8a7791" (R-Car M2-W)
-			    - "renesas,thermal-r8a7792" (R-Car V2H)
-			    - "renesas,thermal-r8a7793" (R-Car M2-N)
-			    - "renesas,thermal-r8a77970" (R-Car V3M)
-			    - "renesas,thermal-r8a77990" (R-Car E3)
-			    - "renesas,thermal-r8a77995" (R-Car D3)
-- reg			: Address range of the thermal registers.
-			  The 1st reg will be recognized as common register
-			  if it has "interrupts".
-
-Option properties:
-
-- interrupts		: If present should contain 3 interrupts for
-                          R-Car V3M/E3/D3 and RZ/G2E or 1 interrupt otherwise.
-
-Example (non interrupt support):
-
-thermal@ffc48000 {
-	compatible = "renesas,thermal-r8a7779", "renesas,rcar-thermal";
-	reg = <0xffc48000 0x38>;
-};
-
-Example (interrupt support):
-
-thermal@e61f0000 {
-	compatible = "renesas,thermal-r8a73a4", "renesas,rcar-thermal";
-	reg = <0xe61f0000 0x14
-		0xe61f0100 0x38
-		0xe61f0200 0x38
-		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	= <115000>;
-				hysteresis	= <0>;
-				type		= "critical";
-			};
-		};
-		cooling-maps {
-		};
-	};
-};
-
-thermal: thermal@e61f0000 {
-	compatible =	"renesas,thermal-r8a7790",
-			"renesas,rcar-gen2-thermal",
-			"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>;
-};
diff --git a/Documentation/devicetree/bindings/thermal/renesas,rcar-thermal.yaml b/Documentation/devicetree/bindings/thermal/renesas,rcar-thermal.yaml
new file mode 100644
index 000000000000..a55c018a3a1f
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/renesas,rcar-thermal.yaml
@@ -0,0 +1,116 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/renesas,rcar-thermal.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas R-Car Thermal
+
+maintainers:
+  - Niklas Söderlund <niklas.soderlund@ragnatech.se>
+  - Geert Uytterhoeven <geert+renesas@glider.be>
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - renesas,thermal-r8a73a4       # R-Mobile APE6
+              - renesas,thermal-r8a7779       # R-Car H1
+          - const: renesas,rcar-thermal       # Without thermal-zone
+
+      - items:
+          - enum:
+              - renesas,thermal-r8a7790       # R-Car H2
+              - renesas,thermal-r8a7791       # R-Car M2-W
+              - renesas,thermal-r8a7792       # R-Car V2H
+              - renesas,thermal-r8a7793       # R-Car M2-N
+          - const: renesas,rcar-gen2-thermal  # With thermal-zone
+          - const: renesas,rcar-thermal       # Without thermal-zone
+
+      - items:
+          - enum:
+              - renesas,thermal-r8a7743       # RZ/G1M
+              - renesas,thermal-r8a7744       # RZ/G1N
+          - const: renesas,rcar-gen2-thermal  # With thermal-zone
+
+      - items:
+          - enum:
+              - renesas,thermal-r8a774c0      # RZ/G2E
+              - renesas,thermal-r8a77970      # R-Car V3M
+              - renesas,thermal-r8a77990      # R-Car E3
+              - renesas,thermal-r8a77995      # R-Car D3
+
+  reg: true
+    # The 1st reg will be recognized as common register if it has "interrupts".
+
+  interrupts:
+    # If present should contain 3 interrupts for R-Car V3M/E3/D3 and RZ/G2E,
+    # otherwise 1 interrupt.
+    minItems: 1
+    maxItems: 3
+
+  clocks:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+examples :
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/clock/r8a7790-clock.h>
+
+ # Example (non interrupt support):
+  - |
+    thermal@ffc48000 {
+        compatible = "renesas,thermal-r8a7779", "renesas,rcar-thermal";
+        reg = <0xffc48000 0x38>;
+    };
+
+  # Example (interrupt support):
+  - |
+    thermal@e61f0000 {
+        compatible = "renesas,thermal-r8a73a4", "renesas,rcar-thermal";
+        reg = <0xe61f0000 0x14
+               0xe61f0100 0x38
+               0xe61f0200 0x38
+               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 = <115000>;
+                    hysteresis = <0>;
+                    type = "critical";
+                };
+            };
+            cooling-maps {
+            };
+        };
+    };
+
+    thermal: thermal@e61f0000 {
+        compatible = "renesas,thermal-r8a7790",
+                     "renesas,rcar-gen2-thermal",
+                     "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>;
+    };
-- 
2.11.0