| Message ID | 20240320020549.71810-1-alexey.klimov@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/3] dt-bindings: power: reset: add gs101 poweroff bindings | expand |
On 20/03/2024 03:05, Alexey Klimov wrote: > Signed-off-by: Alexey Klimov <alexey.klimov@linaro.org> Missing commit msg. A nit, subject: drop second/last, redundant "bindings". The "dt-bindings" prefix is already stating that these are bindings. See also: https://elixir.bootlin.com/linux/v6.7-rc8/source/Documentation/devicetree/bindings/submitting-patches.rst#L18 > --- > .../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 Bindings are not for drivers, but hardware. > + > +maintainers: > + - Alexey Klimov <alexey.klimov@linaro.org> > + > +description: |+ > + This is a Google Tensor gs101 poweroff driver using custom regmap Bindings are not for drivers, but hardware. > + 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: > + $ref: /schemas/types.yaml#/definitions/phandle This does not look right. The poweroff handling is within PMU, not somewhere else. Don't use syscons as a replacement of regular MMIO addresses. Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/power/reset/google,gs101-poweroff.yaml b/Documentation/devicetree/bindings/power/reset/google,gs101-poweroff.yaml new file mode 100644 index 000000000000..d704bf28294a --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/google,gs101-poweroff.yaml @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$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@linaro.org> + +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>; + };
Signed-off-by: Alexey Klimov <alexey.klimov@linaro.org> --- .../power/reset/google,gs101-poweroff.yaml | 54 +++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/reset/google,gs101-poweroff.yaml