Thread (24 messages) 24 messages, 3 authors, 2021-07-16

[PATCH v3 18/19] dt-bindings: auxdisplay: ht16k33: Document LED subnode

From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: 2021-07-14 15:12:07
Also in: linux-devicetree, linux-leds, lkml
Subsystem: auxiliary display drivers, ht16k33 led controller driver, open firmware and flattened device tree bindings, the rest · Maintainers: Andy Shevchenko, Robin van der Gracht, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds

Extend the Holtek HT16K33 LED controller Device Tree bindings with an
LED subnode, conforming to the standard LED bindings.

This allows the user to exert more control, like specifying LED color,
function, and/or trigger, to extend LED functionality beyond a simple
display backlight.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
---
v3:
  - New.
---
 .../bindings/auxdisplay/holtek,ht16k33.yaml           | 11 +++++++++++
 1 file changed, 11 insertions(+)
diff --git a/Documentation/devicetree/bindings/auxdisplay/holtek,ht16k33.yaml b/Documentation/devicetree/bindings/auxdisplay/holtek,ht16k33.yaml
index 2a58f883a08cb199..c750c1a915bdbecb 100644
--- a/Documentation/devicetree/bindings/auxdisplay/holtek,ht16k33.yaml
+++ b/Documentation/devicetree/bindings/auxdisplay/holtek,ht16k33.yaml
@@ -50,6 +50,11 @@ properties:
     default: 16
     description: Initial brightness level
 
+  led:
+    type: object
+    $ref: /schemas/leds/common.yaml#
+    unevaluatedProperties: false
+
 required:
   - compatible
   - reg
@@ -68,6 +73,7 @@ examples:
   - |
     #include <dt-bindings/interrupt-controller/irq.h>
     #include <dt-bindings/input/input.h>
+    #include <dt-bindings/leds/common.h>
     i2c1 {
             #address-cells = <1>;
             #size-cells = <0>;
@@ -89,5 +95,10 @@ examples:
                                    <MATRIX_KEY(4, 1, KEY_F9)>,
                                    <MATRIX_KEY(5, 1, KEY_F3)>,
                                    <MATRIX_KEY(6, 1, KEY_F1)>;
+
+                    led {
+                            color = <LED_COLOR_ID_RED>;
+                            function = LED_FUNCTION_BACKLIGHT;
+                    };
             };
       };
-- 
2.25.1
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