linux-kernel - [PATCH v2] dt-bindings: gpio: mpfs-gpio: allow parsing of hog child nodes.

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Date:   Thu, 25 Aug 2022 15:35:23 +0100
From:   Conor Dooley <conor.dooley@...rochip.com>
To:     <brgl@...ev.pl>, <krzysztof.kozlowski+dt@...aro.org>,
        <linus.walleij@...aro.org>, <robh+dt@...nel.org>
CC:     <devicetree@...r.kernel.org>, <linux-gpio@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Conor Dooley <conor.dooley@...rochip.com>
Subject: [PATCH v2] dt-bindings: gpio: mpfs-gpio: allow parsing of hog child nodes.

The SD card and eMMC on PolarFire SoC are sometimes muxed using a GPIO
by the bootloader. Add a hog child property to facilitate this.

Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
Changes since v1:
- move addtionalProperties up under type:
- drop the explicit match group syntax
---
 .../bindings/gpio/microchip,mpfs-gpio.yaml     | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpio/microchip,mpfs-gpio.yaml b/Documentation/devicetree/bindings/gpio/microchip,mpfs-gpio.yaml
index 110651eafa70..fdc16822fd4b 100644
--- a/Documentation/devicetree/bindings/gpio/microchip,mpfs-gpio.yaml
+++ b/Documentation/devicetree/bindings/gpio/microchip,mpfs-gpio.yaml
@@ -44,6 +44,24 @@ properties:
 
   gpio-controller: true
 
+patternProperties:
+  "^.+-hog(-[0-9]+)?$":
+    type: object
+
+    additionalProperties: false
+
+    properties:
+      gpio-hog: true
+      gpios: true
+      input: true
+      output-high: true
+      output-low: true
+      line-name: true
+
+    required:
+      - gpio-hog
+      - gpios
+
 required:
   - compatible
   - reg
-- 
2.36.1