[PATCH v3 09/17] dt-bindings: soc: socionext: Add UniPhier system controller

[Kunihiko Hayashi]

Add devicetree binding schema for the system controller implemented on
Socionext Uniphier SoCs.

This system controller has multiple functions such as clock control,
reset control, internal watchdog timer, thermal management, and so on.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko at socionext.com>
---
 .../socionext/socionext,uniphier-sysctrl.yaml | 104 ++++++++++++++++++
 MAINTAINERS                                   |   1 +
 2 files changed, 105 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/socionext/socionext,uniphier-sysctrl.yaml

diff --git a/Documentation/devicetree/bindings/soc/socionext/socionext,uniphier-sysctrl.yaml b/Documentation/devicetree/bindings/soc/socionext/socionext,uniphier-sysctrl.yaml
new file mode 100644
index 000000000000..3acb14201d1a
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/socionext/socionext,uniphier-sysctrl.yaml
@@ -0,0 +1,104 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/socionext/socionext,uniphier-sysctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Socionext UniPhier system controller
+
+maintainers:
+  - Kunihiko Hayashi <hayashi.kunihiko at socionext.com>
+
+description: |+
+  System controller implemented on Socionext UniPhier SoCs has multiple
+  functions such as clock control, reset control, internal watchdog timer,
+  thermal management, and so on.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - socionext,uniphier-ld4-sysctrl
+          - socionext,uniphier-pro4-sysctrl
+          - socionext,uniphier-pro5-sysctrl
+          - socionext,uniphier-pxs2-sysctrl
+          - socionext,uniphier-sld8-sysctrl
+          - socionext,uniphier-ld11-sysctrl
+          - socionext,uniphier-ld20-sysctrl
+          - socionext,uniphier-pxs3-sysctrl
+          - socionext,uniphier-nx1-sysctrl
+      - const: simple-mfd
+      - const: syscon
+
+  reg:
+    maxItems: 1
+
+  clock-controller:
+    $ref: /schemas/clock/socionext,uniphier-clock.yaml#
+
+  reset-controller:
+    $ref: /schemas/reset/socionext,uniphier-reset.yaml#
+
+  watchdog:
+    $ref: /schemas/watchdog/socionext,uniphier-wdt.yaml#
+
+  thermal-sensor:
+    $ref: /schemas/thermal/socionext,uniphier-thermal.yaml#
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: socionext,uniphier-ld4-sysctrl
+    then:
+      properties:
+        watchdog: false
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - socionext,uniphier-ld4-sysctrl
+              - socionext,uniphier-pro4-sysctrl
+              - socionext,uniphier-sld8-sysctrl
+              - socionext,uniphier-ld11-sysctrl
+    then:
+      properties:
+        thermal-sensor: false
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    syscon at 61840000 {
+        compatible = "socionext,uniphier-ld20-sysctrl",
+                     "simple-mfd", "syscon";
+        reg = <0x61840000 0x4000>;
+
+        clock-controller {
+            compatible = "socionext,uniphier-ld20-clock";
+            #clock-cells = <1>;
+        };
+
+        reset-controller {
+            compatible = "socionext,uniphier-ld20-reset";
+            #reset-cells = <1>;
+        };
+
+        watchdog {
+            compatible = "socionext,uniphier-wdt";
+        };
+
+        thermal-sensor {
+            compatible = "socionext,uniphier-ld20-thermal";
+            interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
+            #thermal-sensor-cells = <0>;
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 0d8faba73fe8..8cec8ea46dd1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3103,6 +3103,7 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/arm/socionext/uniphier.yaml
 F:	Documentation/devicetree/bindings/gpio/socionext,uniphier-gpio.yaml
 F:	Documentation/devicetree/bindings/pinctrl/socionext,uniphier-pinctrl.yaml
+F:	Documentation/devicetree/bindings/soc/socionext/socionext,uniphier*.yaml
 F:	arch/arm/boot/dts/uniphier*
 F:	arch/arm/include/asm/hardware/cache-uniphier.h
 F:	arch/arm/mach-uniphier/
-- 
2.25.1