Add YAML schemas for the watchdog timer on Intel Lightning Mountain SoC. Signed-off-by: Dilip Kota <eswara.kota@xxxxxxxxxxxxxxx> --- .../bindings/watchdog/intel,lgm-gptc-wdt.yaml | 75 ++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/intel,lgm-gptc-wdt.yaml diff --git a/Documentation/devicetree/bindings/watchdog/intel,lgm-gptc-wdt.yaml b/Documentation/devicetree/bindings/watchdog/intel,lgm-gptc-wdt.yaml new file mode 100644 index 0000000000000..83dc39a5090c1 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/intel,lgm-gptc-wdt.yaml @@ -0,0 +1,75 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/watchdog/intel,lgm-gptc-wdt.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Intel Lightning Mountain Watchdog timer. + +maintainers: + - Dilip Kota <eswara.kota@xxxxxxxxxxxxxxx> + +description: | + Intel Lightning Mountain SoC has General Purpose Timer Counter(GPTC) which can + be configured as Clocksource, real time clock and Watchdog timer. + Each General Purpose Timer Counter has three timers. And total four General + Purpose Timer Counters are present on Lightning Mountain SoC which sums up + to 12 timers. + Lightning Mountain has four CPUs and each CPU is configured with one GPTC + timer as watchdog timer. Total four timers are configured as watchdog timers + on Lightning Mountain SoC. + +allOf: + - $ref: "watchdog.yaml#" + +properties: + compatible: + enum: + - intel,lgm-gptc-wdt + + reg: + maxItems: 1 + + clocks: + items: + - description: Frequency clock + - description: Core clock + + clock-names: + items: + - const: freq + - const: gptc + + intel,wdt-rst-hndl: + $ref: /schemas/types.yaml#/definitions/phandle + description: Watchdog timer registers handle + + intel,timer-cfg: + description: Watchdog Timer id and CPU id + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32-array + - minItems: 2 + maxItems: 4 + items: + minimum: 0 + maximum: 3 + +required: + - compatible + - reg + - clocks + - clock-names + - intel,wdt-rst-hndl + - intel,timer-cfg + +examples: + - | + watchdog@e2500000 { + compatible = "intel,lgm-gptc-wdt"; + reg = <0xe2500000 0x10000>; + intel,wdt-rst-hndl = <&sysconf>; + clocks = <&cgu0 31>, <&cgu0 136>; + clock-names = "freq", "gptc"; + timeout-sec = <30>; + intel,timer-cfg = <1 0 2 1>; + }; -- 2.11.0
