[PATCH v4 1/4] dt-bindings: timer: Add the Renesas RZ/N1 timer

The Renesas RZ/N1 timer block controller is the controller in charge of
timers available in the Renesas RZ/N1 SoCs family.

This controller handles 8 timers:
 - 6 16-bit timers
 - 2 32-bit timers

Signed-off-by: Herve Codina (Schneider Electric) <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
---
 .../bindings/timer/renesas,rzn1-timer.yaml    | 74 +++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/renesas,rzn1-timer.yaml

diff --git a/Documentation/devicetree/bindings/timer/renesas,rzn1-timer.yaml b/Documentation/devicetree/bindings/timer/renesas,rzn1-timer.yaml
new file mode 100644
index 000000000000..f00ad941f8cc
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/renesas,rzn1-timer.yaml
@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/renesas,rzn1-timer.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas RZ/N1 timers
+
+maintainers:
+  - Herve Codina <[email protected]>
+
+description: |
+  The Renesas RZ/N1 SoCs timers block controller is composed of 8 independent
+  timers.
+    - 6 are 16-bit timers
+    - 2 are 32-bit timers
+
+  Each timer has its own interrupt line and can work in either one-shot or
+  periodic mode.
+
+properties:
+  compatible:
+    items:
+      - const: renesas,r9a06g032-timer   # RZ/N1D
+      - const: renesas,rzn1-timer
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: APB internal bus clock
+
+  clock-names:
+    items:
+      - const: pclk
+
+  power-domains:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 8
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - power-domains
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/r9a06g032-sysctrl.h>
+
+    timer@51001000 {
+        compatible = "renesas,r9a06g032-timer", "renesas,rzn1-timer";
+        reg = <0x51001000 0x400>;
+        clocks = <&sysctrl R9A06G032_HCLK_TIMER0>;
+        clock-names = "pclk";
+        power-domains = <&sysctrl>;
+        interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>;
+    };
+...
-- 
2.55.0