diff mbox series

[v7,19/21] dt-bindings: auxdisplay: ht16k33: Document LED subnode

Message ID 20211012183327.649865-20-geert@linux-m68k.org (mailing list archive)
State Superseded
Headers show
Series auxdisplay: ht16k33: Add character display support | expand

Commit Message

Geert Uytterhoeven Oct. 12, 2021, 6:33 p.m. UTC 
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>
Reviewed-by: Rob Herring <robh@kernel.org>
---
v7:
  - Add linux,default-trigger to example,

v6:
  - No changes,

v5:
  - No changes,

v4:
  - Add Reviewed-by,

v3:
  - New.
---
 .../bindings/auxdisplay/holtek,ht16k33.yaml          | 12 ++++++++++++
 1 file changed, 12 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/auxdisplay/holtek,ht16k33.yaml b/Documentation/devicetree/bindings/auxdisplay/holtek,ht16k33.yaml
index 6baf1200c9d8488e..fc4873deb76f3190 100644
--- a/Documentation/devicetree/bindings/auxdisplay/holtek,ht16k33.yaml
+++ b/Documentation/devicetree/bindings/auxdisplay/holtek,ht16k33.yaml
@@ -48,6 +48,11 @@  properties:
     default: 16
     description: Initial brightness level
 
+  led:
+    type: object
+    $ref: /schemas/leds/common.yaml#
+    unevaluatedProperties: false
+
 required:
   - compatible
   - reg
@@ -66,6 +71,7 @@  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>;
@@ -87,5 +93,11 @@  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;
+                            linux,default-trigger = "backlight";
+                    };
             };
       };