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Message-Id: <20240131-mbly-clk-v4-3-bcd00510d6a0@bootlin.com>
Date: Wed, 31 Jan 2024 17:26:16 +0100
From: Théo Lebrun <theo.lebrun@...tlin.com>
To: Gregory CLEMENT <gregory.clement@...tlin.com>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh+dt@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Rafał Miłecki <rafal@...ecki.pl>, 
 Philipp Zabel <p.zabel@...gutronix.de>
Cc: Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>, 
 linux-mips@...r.kernel.org, linux-clk@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Tawfik Bayouk <tawfik.bayouk@...ileye.com>, linux-gpio@...r.kernel.org, 
 Théo Lebrun <theo.lebrun@...tlin.com>
Subject: [PATCH v4 03/18] dt-bindings: pinctrl: allow pin controller device
 without unit address

Allow a pin controller device to have no address, therefore no unit
address.

The previous $nodename was enforcing a unit address, but
scripts/dtc/checks.c enforced that names with unit addresses have reg
or ranges:

   Warning (unit_address_vs_reg): .../pinctrl@0: node has a unit
   name, but no reg or ranges property

Fix pinctrl.yaml to adopt a (pinctrl|pinmux)(-[a-z]+)? node name when
neither reg nor ranges are required. Use [a-z]+ to avoid conflicts with
pinctrl-consumer.yaml.

Signed-off-by: Théo Lebrun <theo.lebrun@...tlin.com>
---
 Documentation/devicetree/bindings/pinctrl/pinctrl.yaml | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/pinctrl.yaml
index d471563119a9..3d977b54e260 100644
--- a/Documentation/devicetree/bindings/pinctrl/pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/pinctrl.yaml
@@ -26,9 +26,6 @@ description: |
   controller device.
 
 properties:
-  $nodename:
-    pattern: "^(pinctrl|pinmux)(@[0-9a-f]+)?$"
-
   "#pinctrl-cells":
     description: >
       Number of pin control cells in addition to the index within the pin
@@ -42,4 +39,19 @@ properties:
       This property can be set either globally for the pin controller or in
       child nodes for individual pin group control.
 
+if:
+  anyOf:
+    - required:
+        - reg
+    - required:
+        - ranges
+then:
+  properties:
+    $nodename:
+      pattern: "^(pinctrl|pinmux)(@[0-9a-f]+)?$"
+else:
+  properties:
+    $nodename:
+      pattern: "^(pinctrl|pinmux)(-[a-z]+)?$"
+
 additionalProperties: true

-- 
2.43.0


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