[PATCH v3 4/4] dt-bindings: firmware: arm,scmi: Add support for pinctrl protocol

Oleksii Moisieiev
2023-06-06T16:23:20Z

Add new SCMI v3.2 pinctrl protocol bindings definitions and example.

Signed-off-by: Oleksii Moisieiev <oleksii_moisieiev@epam.com>
---
.../bindings/firmware/arm,scmi.yaml | 53 +++++++++++++++++++
1 file changed, 53 insertions(+)

diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
index 5824c43e9893..a19aa184bbd1 100644
--- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
+++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
@@ -233,6 +233,39 @@ properties:
reg:
const: 0x18

+ protocol@19:
+ $ref: '#/$defs/protocol-node'
+
+ properties:
+ reg:
+ const: 0x19
+
+ '#pinctrl-cells':
+ const: 0
+
+ allOf:
+ - $ref: /schemas/pinctrl/pinctrl.yaml#
+
+ required:
+ - reg
+
+ additionalProperties:
+ anyOf:
+ - type: object
+ allOf:
+ - $ref: /schemas/pinctrl/pincfg-node.yaml#
+ - $ref: /schemas/pinctrl/pinmux-node.yaml#
+
+ description:
+ A pin multiplexing sub-node describe how to configure a
+ set of pins is some desired function.
+ A single sub-node may define several pin configurations.
+ This sub-node is using default pinctrl bindings to configure
+ pin multiplexing and using SCMI protocol to apply specified
+ configuration using SCMI protocol.
+
+ unevaluatedProperties: false
+
additionalProperties: false

$defs:
@@ -384,6 +417,26 @@ examples:
scmi_powercap: protocol@18 {
reg = <0x18>;
};
+
+ scmi_pinctrl: protocol@19 {
+ reg = <0x19>;
+ #pinctrl-cells = <0>;
+
+ i2c2 {
+ groups = "i2c2_a", "i2c2_b";
+ function = "i2c2";
+ };
+
+ pins_mdio {
+ groups = "avb_mdio";
+ drive-strength = <24>;
+ };
+
+ keys_pins: keys {
+ pins = "GP_5_17", "GP_5_20", "GP_5_22", "GP_2_1";
+ bias-pull-up;
+ };
+ };
};
};

--
2.25.1