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Signed-off-by: Peng Fan --- .../devicetree/bindings/firmware/arm,scmi.yaml | 99 ++++++++++++++++++++++ 1 file changed, 99 insertions(+) diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml index 4591523b51a0..bfd2b6a89979 100644 --- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml +++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml @@ -247,6 +247,85 @@ properties: reg: const: 0x18 + protocol@19: + type: object + allOf: + - $ref: '#/$defs/protocol-node' + - $ref: /schemas/pinctrl/pinctrl.yaml + - if: + properties: + compatible: + const: fsl,imx95-scmi-pinctrl + then: + patternProperties: + "grp$": false + "-pins$": true + else: + patternProperties: + "grp$": false + "-pins$": true + unevaluatedProperties: false + + properties: + reg: + const: 0x19 + + '#pinctrl-cells': + const: 0 + + compatible: + const: fsl,imx95-scmi-pinctrl + + patternProperties: + '-pins$': + type: object + allOf: + - $ref: /schemas/pinctrl/pincfg-node.yaml# + - $ref: /schemas/pinctrl/pinmux-node.yaml# + unevaluatedProperties: false + + description: + A pin multiplexing sub-node describe how to configure a + set of pins is some desired function. + A single sub-node may define several pin configurations. + This sub-node is using default pinctrl bindings to configure + pin multiplexing and using SCMI protocol to apply specified + configuration using SCMI protocol. + + 'grp$': + type: object + description: + Pinctrl node's client devices use subnodes for desired pin configuration. + Client device subnodes use below standard properties. + + properties: + fsl,pins: + description: + each entry consists of 6 integers and represents the mux and config + setting for one pin. The first 5 integers are specified using a PIN_FUNC_ID macro, which can + be found in . The last + integer CONFIG is the pad setting value like pull-up on this pin. Please + refer to i.MX95 Plus Reference Manual for detailed CONFIG settings. + $ref: /schemas/types.yaml#/definitions/uint32-matrix + items: + items: + - description: | + "mux_reg" indicates the offset of mux register. + - description: | + "conf_reg" indicates the offset of pad configuration register. + - description: | + "input_reg" indicates the offset of select input register. + - description: | + "mux_val" indicates the mux value to be applied. + - description: | + "input_val" indicates the select input value to be applied. + - description: | + "pad_setting" indicates the pad configuration value to be applied. + + required: + - reg + additionalProperties: false $defs: @@ -401,6 +480,26 @@ examples: scmi_powercap: protocol@18 { reg = <0x18>; }; + + scmi_pinctrl: protocol@19 { + reg = <0x19>; + #pinctrl-cells = <0>; + + i2c2-pins { + groups = "i2c2_a", "i2c2_b"; + function = "i2c2"; + }; + + mdio-pins { + groups = "avb_mdio"; + drive-strength = <24>; + }; + + keys_pins: keys-pins { + pins = "GP_5_17", "GP_5_20", "GP_5_22", "GP_2_1"; + bias-pull-up; + }; + }; }; };