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| -rw-r--r-- | Documentation/devicetree/bindings/watchdog/renesas,rcar-gen3-wwdt.yaml | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/watchdog/renesas,rcar-gen3-wwdt.yaml b/Documentation/devicetree/bindings/watchdog/renesas,rcar-gen3-wwdt.yaml new file mode 100644 index 000000000000..ffafe9a6d3f5 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/renesas,rcar-gen3-wwdt.yaml @@ -0,0 +1,114 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/watchdog/renesas,rcar-gen3-wwdt.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas Window Watchdog Timer (WWDT) Controller + +maintainers: + - Wolfram Sang <wsa+renesas@sang-engineering.com> + +properties: + compatible: + oneOf: + - items: + - enum: + - renesas,r8a77970-wwdt # R-Car V3M + - renesas,r8a77980-wwdt # R-Car V3H + - const: renesas,rcar-gen3-wwdt + + - items: + - enum: + - renesas,r8a779a0-wwdt # R-Car V3U + - renesas,r8a779f0-wwdt # R-Car S4 + - renesas,r8a779g0-wwdt # R-Car V4H + - renesas,r8a779h0-wwdt # R-Car V4M + - const: renesas,rcar-gen4-wwdt + + reg: + maxItems: 1 + + interrupts: + items: + - description: Pretimeout, 75% of overflow reached + - description: Error occurred + + interrupt-names: + items: + - const: pretimeout + - const: error + + clocks: + items: + - description: Counting clock + - description: Bus clock + + clock-names: + items: + - const: cnt + - const: bus + + resets: + minItems: 1 + maxItems: 2 + + reset-names: + minItems: 1 + items: + - const: cnt + - const: bus + + power-domains: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - interrupt-names + - clocks + - clock-names + - resets + - reset-names + - power-domains + +allOf: + - $ref: watchdog.yaml# + + - if: + properties: + compatible: + contains: + enum: + - renesas,r8a779a0-wwdt + - renesas,r8a779f0-wwdt + then: + properties: + resets: + minItems: 2 + reset-names: + minItems: 2 + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/r8a779g0-cpg-mssr.h> + #include <dt-bindings/power/r8a779g0-sysc.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + + watchdog@ffc90000 { + compatible = "renesas,r8a779g0-wwdt", + "renesas,rcar-gen4-wwdt"; + reg = <0xffc90000 0x10>; + interrupts = <GIC_SPI 310 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 311 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "pretimeout", "error"; + clocks = <&cpg CPG_CORE R8A779G0_CLK_R>, + <&cpg CPG_CORE R8A779G0_CLK_SASYNCRT>; + clock-names = "cnt", "bus"; + power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>; + resets = <&cpg 1200>; + reset-names = "cnt"; + }; |