2024-01-22 19:52:08

by Duje Mihanović

Subject: [PATCH v4 2/3] dt-bindings: backlight: add Kinetic KTD2801 binding

KTD2801 is a LED backlight driver IC found in samsung,coreprimevelte.
The brightness can be set using PWM or the ExpressWire protocol. Add
a DT binding for the KTD2801.

Reviewed-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>
Signed-off-by: Duje Mihanović <[email protected]>
---
.../bindings/leds/backlight/kinetic,ktd2801.yaml | 46 ++++++++++++++++++++++
1 file changed, 46 insertions(+)

diff --git a/Documentation/devicetree/bindings/leds/backlight/kinetic,ktd2801.yaml b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktd2801.yaml
new file mode 100644
index 000000000000..b005065e0f48
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktd2801.yaml
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/backlight/kinetic,ktd2801.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Kinetic Technologies KTD2801 one-wire backlight
+
+maintainers:
+ - Duje Mihanović <[email protected]>
+
+description: |
+ The Kinetic Technologies KTD2801 is a LED backlight driver controlled
+ by a single GPIO line. The driver can be controlled with a PWM signal
+ or by pulsing the GPIO line to set the backlight level. This is called
+ "ExpressWire".
+
+allOf:
+ - $ref: common.yaml#
+
+properties:
+ compatible:
+ const: kinetic,ktd2801
+
+ ctrl-gpios:
+ maxItems: 1
+
+ default-brightness: true
+ max-brightness: true
+
+required:
+ - compatible
+ - ctrl-gpios
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ backlight {
+ compatible = "kinetic,ktd2801";
+ ctrl-gpios = <&gpio 97 GPIO_ACTIVE_HIGH>;
+ max-brightness = <210>;
+ default-brightness = <100>;
+ };

--
2.43.0

2024-01-23 17:25:32

by Daniel Thompson

Subject: Re: [PATCH v4 2/3] dt-bindings: backlight: add Kinetic KTD2801 binding

On Mon, Jan 22, 2024 at 08:50:58PM +0100, Duje Mihanović wrote:
> KTD2801 is a LED backlight driver IC found in samsung,coreprimevelte.
> The brightness can be set using PWM or the ExpressWire protocol. Add
> a DT binding for the KTD2801.
>
> Reviewed-by: Krzysztof Kozlowski <[email protected]>
> Reviewed-by: Linus Walleij <[email protected]>
> Signed-off-by: Duje Mihanović <[email protected]>

Reviewed-by: Daniel Thompson <[email protected]>


Daniel.