[PATCH 1/3] dt-bindings: firmware: nxp,imx95-scmi-pinctrl: Introduce nxp,iomuxc-daisy-off

Peng Fan (OSS)
2025-05-12T02:20:07Z

From: Peng Fan <peng.fan@nxp.com>

The IOMUX Controller in i.MX9 family has Daisy chain that multi pads drive
same module input pin. Each SoC has its own register offset, so
introduce "nxp,iomuxc-daisy-off" property to specify the daisy register
offset. With this property being parsed by driver, there is no need
to hardcode the offset in pinctrl driver for each new SoC.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
.../devicetree/bindings/firmware/nxp,imx95-scmi-pinctrl.yaml | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/firmware/nxp,imx95-scmi-pinctrl.yaml b/Documentation/devicetree/bindings/firmware/nxp,imx95-scmi-pinctrl.yaml
index a96fc6cce502c10ab415e0b26bff1be8c3bc82f5..b5b2a9c8688a7f6525cdb6a32db22681f4f1a0b9 100644
--- a/Documentation/devicetree/bindings/firmware/nxp,imx95-scmi-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/firmware/nxp,imx95-scmi-pinctrl.yaml
@@ -13,6 +13,11 @@ maintainers:
allOf:
- $ref: /schemas/pinctrl/pinctrl.yaml

+properties:
+ nxp,iomuxc-daisy-off:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Specify the IOMUX Controller first Daisy register's offset
+
patternProperties:
'grp$':
type: object
@@ -51,3 +56,6 @@ patternProperties:
- fsl,pins

additionalProperties: true
+
+required:
+ - nxp,iomuxc-daisy-off

--
2.37.1