linux-kernel - [PATCH v2 2/4] dt-bindings: auxdisplay: Add bindings for generic 7 segment LED

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Message-ID: <20240227212244.262710-3-chris.packham@alliedtelesis.co.nz>
Date: Wed, 28 Feb 2024 10:22:42 +1300
From: Chris Packham <chris.packham@...iedtelesis.co.nz>
To: andy@...nel.org,
	geert@...ux-m68k.org,
	robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org,
	andrew@...n.ch,
	gregory.clement@...tlin.com,
	sebastian.hesselbarth@...il.com,
	ojeda@...nel.org,
	tzimmermann@...e.de,
	javierm@...hat.com,
	robin@...tonic.nl,
	lee@...nel.org,
	pavel@....cz
Cc: devicetree@...r.kernel.org,
	linux-leds@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Chris Packham <chris.packham@...iedtelesis.co.nz>
Subject: [PATCH v2 2/4] dt-bindings: auxdisplay: Add bindings for generic 7 segment LED

Add bindings for a generic 7 segment LED display using GPIOs.

Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
---

Notes:
    Changes in v2:
    - Use compatible = "generic-gpio-7seg" to keep checkpatch.pl happy

 .../auxdisplay/generic-gpio-7seg.yaml         | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/auxdisplay/generic-gpio-7seg.yaml

diff --git a/Documentation/devicetree/bindings/auxdisplay/generic-gpio-7seg.yaml b/Documentation/devicetree/bindings/auxdisplay/generic-gpio-7seg.yaml
new file mode 100644
index 000000000000..46d53ebdf413
--- /dev/null
+++ b/Documentation/devicetree/bindings/auxdisplay/generic-gpio-7seg.yaml
@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/auxdisplay/generic,gpio-7seg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: GPIO based LED segment display
+
+maintainers:
+  - Chris Packham <chris.packham@...iedtelesis.co.nz>
+
+properties:
+  compatible:
+    const: generic-gpio-7seg
+
+  segment-gpios:
+    description:
+      An array of GPIOs one per segment.
+    minItems: 7
+
+required:
+  - segment-gpios
+
+additionalProperties: false
+
+examples:
+  - |
+
+    #include <dt-bindings/gpio/gpio.h>
+
+    led-7seg {
+        compatible = "generic-gpio-7seg";
+        segment-gpios = <&gpio 0 GPIO_ACTIVE_LOW
+                         &gpio 1 GPIO_ACTIVE_LOW
+                         &gpio 2 GPIO_ACTIVE_LOW
+                         &gpio 3 GPIO_ACTIVE_LOW
+                         &gpio 4 GPIO_ACTIVE_LOW
+                         &gpio 5 GPIO_ACTIVE_LOW
+                         &gpio 6 GPIO_ACTIVE_LOW>;
+    };
-- 
2.43.2