Signed-off-by: Alexey Klimov <alexey.klimov@xxxxxxxxxx> --- .../power/reset/google,gs101-poweroff.yaml | 54 +++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/reset/google,gs101-poweroff.yaml diff --git a/Documentation/devicetree/bindings/power/reset/google,gs101-poweroff.yaml b/Documentation/devicetree/bindings/power/reset/google,gs101-poweroff.yaml new file mode 100644 index 000000000000..d704bf28294a --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/google,gs101-poweroff.yaml @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/reset/google,gs101-poweroff.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Google GS101 poweroff driver + +maintainers: + - Alexey Klimov <alexey.klimov@xxxxxxxxxx> + +description: |+ + This is a Google Tensor gs101 poweroff driver using custom regmap + to map the poweroff register. The poweroff itself is performed with + a write to the poweroff register from a privileged mode. Since generic + syscon does not support this, the specific one is required. + The write to the poweroff register is defined by the register map pointed + by syscon reference plus the offset with the value and mask defined + in the poweroff node. + Default will be little endian mode, 32 bit access only. + +properties: + compatible: + const: google,gs101-poweroff + + mask: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Update only the register bits defined by the mask (32 bit). + + offset: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Offset in the register map for the poweroff register (in bytes). + + samsung,syscon-phandle: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle to the PMU system controller node. + +required: + - compatible + - offset + - mask + - samsung,syscon-phandle + +additionalProperties: false + +examples: + - | + poweroff { + compatible = "google,gs101-poweroff"; + samsung,syscon-phandle = <&pmu_syscon>; + offset = <0x10>; + mask = <0x42>; + }; -- 2.43.0
