On 10/08/2024 03:28, Konrad Dybcio wrote: > From: Konrad Dybcio <quic_kdybcio@xxxxxxxxxxx> > > Add bindings for the Surface System Aggregator Module (SAM/SSAM), the > Microsoft Surface-standard Embedded Controller, used on both x86- and > Qualcomm-based devices. > > It provides a plethora of functions, depending on what's wired up to > it. That includes but is not limited to: fan control, keyboard/touchpad > support, thermal sensors, power control, special buttons, tablet mode. > > Signed-off-by: Konrad Dybcio <quic_kdybcio@xxxxxxxxxxx> > --- > .../bindings/platform/microsoft,surface-sam.yaml | 50 ++++++++++++++++++++++ > 1 file changed, 50 insertions(+) > > diff --git a/Documentation/devicetree/bindings/platform/microsoft,surface-sam.yaml b/Documentation/devicetree/bindings/platform/microsoft,surface-sam.yaml > new file mode 100644 > index 000000000000..f613738aa31d > --- /dev/null > +++ b/Documentation/devicetree/bindings/platform/microsoft,surface-sam.yaml > @@ -0,0 +1,50 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/platform/microsoft,surface-sam.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Surface System Aggregator Module (SAM, SSAM) > + > +maintainers: > + - Konrad Dybcio <konradybcio@xxxxxxxxxx> > + > +description: | No need for | > + Surface devices use a standardized embedded controller to let the > + operating system interface with various hardware functions. The > + specific functionalities are modeled as subdevices and matched on > + five levels: domain, category, target, instance and function. > + > +properties: > + compatible: > + const: microsoft,surface-sam > + > + interrupts: > + maxItems: 1 > + > + current-speed: > + description: The baudrate in bits per second of the device as it comes > + online, current active speed. > + $ref: /schemas/types.yaml#/definitions/uint32 This should be just "current-speed: true", because the type will be brought by serial schema. We should however have some schema with peripheral properties for serial devices. I'll come with something. Best regards, Krzysztof
