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author | Andre Przywara <andre.przywara@arm.com> | 2020-09-09 11:50:46 +0100 |
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committer | Rob Herring <robh@kernel.org> | 2020-09-15 11:31:52 -0600 |
commit | 73d3e43f9813edee4d7d9b95bd56ed89f7d807cf (patch) | |
tree | 57123b256124e5da44b3b61fbfb577772813e8e4 /Documentation/devicetree/bindings/watchdog/arm,sp805.yaml | |
parent | 488e5947d975e161ff51407538248d42ef0011d1 (diff) |
dt-bindings: watchdog: sp-805: Convert to Json-schema
Convert the ARM SP-805 watchdog IP DT binding over to Json-schema.
A straight-forward conversion, but the requirement for providing two
clocks got strengthened from "should" to "must".
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20200909105046.160991-1-andre.przywara@arm.com
Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/watchdog/arm,sp805.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/watchdog/arm,sp805.yaml | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/watchdog/arm,sp805.yaml b/Documentation/devicetree/bindings/watchdog/arm,sp805.yaml new file mode 100644 index 000000000000..a69cac8ec208 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/arm,sp805.yaml @@ -0,0 +1,71 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/watchdog/arm,sp805.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ARM AMBA Primecell SP805 Watchdog + +maintainers: + - Viresh Kumar <vireshk@kernel.org> + +description: |+ + The Arm SP805 IP implements a watchdog device, which triggers an interrupt + after a configurable time period. If that interrupt has not been serviced + when the next interrupt would be triggered, the reset signal is asserted. + +allOf: + - $ref: /schemas/watchdog/watchdog.yaml# + +# Need a custom select here or 'arm,primecell' will match on lots of nodes +select: + properties: + compatible: + contains: + const: arm,sp805 + required: + - compatible + +properties: + compatible: + items: + - const: arm,sp805 + - const: arm,primecell + + interrupts: + maxItems: 1 + + reg: + maxItems: 1 + + clocks: + description: | + Clocks driving the watchdog timer hardware. The first clock is used + for the actual watchdog counter. The second clock drives the register + interface. + minItems: 2 + maxItems: 2 + + clock-names: + items: + - const: wdog_clk + - const: apb_pclk + +required: + - compatible + - reg + - clocks + - clock-names + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + watchdog@66090000 { + compatible = "arm,sp805", "arm,primecell"; + reg = <0x66090000 0x1000>; + interrupts = <GIC_SPI 406 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&wdt_clk>, <&apb_pclk>; + clock-names = "wdog_clk", "apb_pclk"; + }; |