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author | Konrad Dybcio <quic_kdybcio@quicinc.com> | 2024-08-14 12:27:26 +0200 |
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committer | Hans de Goede <hdegoede@redhat.com> | 2024-08-19 13:47:27 +0200 |
commit | ceccd196e158805a4e9b69d92318dafe7b9d3ea2 (patch) | |
tree | db7e4fd921aaba4899f7a708cdddb73b768a9fc5 | |
parent | ac5ebdad20060a734ba5ae75e20dcfc1b89ef998 (diff) |
dt-bindings: platform: Add Surface System Aggregator Module
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@quicinc.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240814-topic-sam-v3-2-a84588aad233@quicinc.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
-rw-r--r-- | Documentation/devicetree/bindings/platform/microsoft,surface-sam.yaml | 47 |
1 files changed, 47 insertions, 0 deletions
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..b33d26f15b2a --- /dev/null +++ b/Documentation/devicetree/bindings/platform/microsoft,surface-sam.yaml @@ -0,0 +1,47 @@ +# 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@kernel.org> + +description: | + 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: true + +required: + - compatible + - interrupts + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + uart { + embedded-controller { + compatible = "microsoft,surface-sam"; + + interrupts-extended = <&tlmm 91 IRQ_TYPE_EDGE_RISING>; + + pinctrl-0 = <&ssam_state>; + pinctrl-names = "default"; + + current-speed = <4000000>; + }; + }; |