linux-kernel - [PATCH 2/4] dt-bindings: pinctrl: sunxi: Allow pinmux sub-pattern with leading numbers

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Message-ID: <20251225103616.3203473-3-wens@kernel.org>
Date: Thu, 25 Dec 2025 18:36:13 +0800
From: Chen-Yu Tsai <wens@...nel.org>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen-Yu Tsai <wens@...nel.org>,
	Jernej Skrabec <jernej@...nel.org>,
	Samuel Holland <samuel@...lland.org>,
	Linus Walleij <linusw@...nel.org>,
	Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: devicetree@...r.kernel.org,
	linux-sunxi@...ts.linux.dev,
	linux-gpio@...r.kernel.org,
	linux-media@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] dt-bindings: pinctrl: sunxi: Allow pinmux sub-pattern with leading numbers

The pattern for pinmux node names is typically the peripheral name and
instance number, followed by pingroup name if there are multiple options.

Normally the instance number is directly appended to the peripheral
name, like "mmc0" or "i2c2". But if the peripheral name ends with a
number, then it becomes confusing.

On the A20, the PS2 interface controller has two instances. This
produces pinmux node names like "ps2-0-pins". Make the sub-pattern
"[0-9]-" valid to fit this pattern. Avoid having to confusing "ps20-pins"
name.

Signed-off-by: Chen-Yu Tsai <wens@...nel.org>
---
 .../bindings/pinctrl/allwinner,sun4i-a10-pinctrl.yaml           | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/pinctrl/allwinner,sun4i-a10-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/allwinner,sun4i-a10-pinctrl.yaml
index 990b78765427..45b7a0b6c626 100644
--- a/Documentation/devicetree/bindings/pinctrl/allwinner,sun4i-a10-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/allwinner,sun4i-a10-pinctrl.yaml
@@ -106,7 +106,7 @@ patternProperties:
   #     the pin numbers then,
   #   - Finally, the name will end with either -pin or pins.
 
-  "^([rs]-)?(([a-z0-9]{3,}|[a-oq-z][a-z0-9]*?)?-)+?(p[a-ilm][0-9]*?-)??pins?$":
+  "^([rs]-)?(([a-z0-9]{3,}|[a-oq-z0-9][a-z0-9]*?)?-)+?(p[a-ilm][0-9]*?-)??pins?$":
     type: object
 
     properties:
-- 
2.47.3