[PATCH 1/2] dt-bindings: leds: backlight: add Silergy SY7758

[Alexandre Hamamdjian via B4 Relay <devnull+azkali.limited.gmail.com@kernel.org>]

From: Alexandre Hamamdjian <azkali.limited@gmail.com>

The Silergy SY7758 is an I2C-controlled multi-channel LED backlight
driver typically used to drive the edge-lit LED strings of LCD panels
in handheld and embedded devices. Brightness is programmed as a 12-bit
linear value through two 8-bit registers.

Document the binding for the new compatible "silergy,sy7758" so it can
be referenced by board device trees and the matching driver, and add a
MAINTAINERS entry covering both the binding and the upcoming driver.

Co-developed-by: Philippe Simons <simons.philippe@gmail.com>
Signed-off-by: Philippe Simons <simons.philippe@gmail.com>
Signed-off-by: Alexandre Hamamdjian <azkali.limited@gmail.com>
---
 .../bindings/leds/backlight/silergy,sy7758.yaml    | 47 ++++++++++++++++++++++
 MAINTAINERS                                        |  7 ++++
 2 files changed, 54 insertions(+)

diff --git a/Documentation/devicetree/bindings/leds/backlight/silergy,sy7758.yaml b/Documentation/devicetree/bindings/leds/backlight/silergy,sy7758.yaml
new file mode 100644
index 000000000000..408029e19e2e
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/backlight/silergy,sy7758.yaml
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/backlight/silergy,sy7758.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Silergy SY7758 I2C LED backlight controller
+
+maintainers:
+  - Alexandre Hamamdjian <azkali.limited@gmail.com>
+  - Philippe Simons <simons.philippe@gmail.com>
+
+description:
+  The Silergy SY7758 is an I2C-controlled multi-channel LED backlight
+  driver typically used to drive the edge-lit LED strings of LCD panels
+  in handheld and embedded devices. Brightness is programmed as a 12-bit
+  linear value through two 8-bit registers.
+
+allOf:
+  - $ref: common.yaml#
+
+properties:
+  compatible:
+    const: silergy,sy7758
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        backlight@36 {
+            compatible = "silergy,sy7758";
+            reg = <0x36>;
+            max-brightness = <4080>;
+            default-brightness = <1500>;
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index f877e5aaf2c7..9c132394ca41 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -24561,6 +24561,13 @@ S:	Maintained
 F:	drivers/input/touchscreen/silead.c
 F:	drivers/platform/x86/touchscreen_dmi.c
 
+SILERGY SY7758 BACKLIGHT DRIVER
+M:	Alexandre Hamamdjian <azkali.limited@gmail.com>
+M:	Philippe Simons <simons.philippe@gmail.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/leds/backlight/silergy,sy7758.yaml
+F:	drivers/video/backlight/sy7758.c
+
 SILICON LABS WIRELESS DRIVERS (for WFxxx series)
 M:	Jérôme Pouiller <jerome.pouiller@silabs.com>
 L:	linux-wireless@vger.kernel.org

-- 
2.54.0