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

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Message-Id: <20250512-pin-v1-1-d9f1555a55ad@nxp.com>
Date: Mon, 12 May 2025 10:14:14 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Dong Aisheng <aisheng.dong@....com>, 
 Jacky Bai <ping.bai@....com>, NXP S32 Linux Team <s32@....com>, 
 Linus Walleij <linus.walleij@...aro.org>
Cc: devicetree@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 linux-gpio@...r.kernel.org, Peng Fan <peng.fan@....com>
Subject: [PATCH 1/3] dt-bindings: firmware: nxp,imx95-scmi-pinctrl:
 Introduce nxp,iomuxc-daisy-off

From: Peng Fan <peng.fan@....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@....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