Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 57 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/leds/backlight/led-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/led-backlight.yaml
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index 000000000..625082bf3
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+++ b/Documentation/devicetree/bindings/leds/backlight/led-backlight.yaml
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/backlight/led-backlight.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: led-backlight bindings
+
+maintainers:
+  - Lee Jones <lee.jones@linaro.org>
+  - Daniel Thompson <daniel.thompson@linaro.org>
+  - Jingoo Han <jingoohan1@gmail.com>
+
+description:
+  This binding is used to describe a basic backlight device made of LEDs. It
+  can also be used to describe a backlight device controlled by the output of
+  a LED driver.
+
+properties:
+  compatible:
+    const: led-backlight
+
+  leds:
+    description: A list of LED nodes
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+
+  brightness-levels:
+    description:
+      Array of distinct brightness levels. The levels must be in the range
+      accepted by the underlying LED devices. This is used to translate a
+      backlight brightness level into a LED brightness level. If it is not
+      provided, the identity mapping is used.
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+
+  default-brightness-level:
+    description:
+      The default brightness level (index into the array defined by the
+      "brightness-levels" property).
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+required:
+  - compatible
+  - leds
+
+additionalProperties: false
+
+examples:
+  - |
+    backlight {
+        compatible = "led-backlight";
+
+        leds = <&led1>, <&led2>;
+        brightness-levels = <0 4 8 16 32 64 128 255>;
+        default-brightness-level = <6>;
+    };
+
+...