Thread (7 messages) 7 messages, 3 authors, 2023-01-20

Re: [PATCH v7 1/2] dt-bindings: leds: backlight: Add Kinetic KTZ8866 backlight

From: Krzysztof Kozlowski <hidden>
Date: 2023-01-20 10:19:11
Also in: dri-devel, linux-devicetree, linux-leds, lkml

On 20/01/2023 10:47, Jianhua Lu wrote:
quoted hunk ↗ jump to hunk
Add Kinetic KTZ8866 backlight binding documentation.

Signed-off-by: Jianhua Lu <lujianhua000@gmail.com>
---
Changes in v2:
  - Remove "items" between "compatible" and "const: kinetic,ktz8866".
  - Change "additionalProperties" to "unevaluatedProperties".

Changes in v3:
  - Add Krzysztof's R-b.

Changes in v4:
  - Drop Krzysztof's R-b.
  - Add some new properties.

Changes in v5:
  - Add missing enum under property description.
  - Rename uncorrect properties.

Changes in v6:
  - Correct wrong property suffix and description.

Changes in v7:
  - Add vddpos and vddeg supply.
  - Use enable-gpios instead of defining enable pin.

 .../leds/backlight/kinetic,ktz8866.yaml       | 74 +++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml
diff --git a/Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml
new file mode 100644
index 000000000000..b1d0ade0dfb6
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml
@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/backlight/kinetic,ktz8866.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Kinetic Technologies KTZ8866 backlight
+
+maintainers:
+  - Jianhua Lu <lujianhua000@gmail.com>
+
+description: |
+  The Kinetic Technologies KTZ8866 is a high efficiency 6-channels-current-sinks
+  led backlight with dual lcd bias power.
+  https://www.kinet-ic.com/ktz8866/
+
+allOf:
+  - $ref: common.yaml#
+
+properties:
+  compatible:
+    const: kinetic,ktz8866
+
+  vddpos-supply:
+    description: positive boost supply regulator.
+
+  vddneg-supply:
+    description: negative boost supply regulator.
+
+  enable-gpios:
+    description: GPIO to use to enable/disable the backlight (HWEN pin).
+    maxItems: 1
+
+  current-num-sinks:
+    description: number of the LED current sinks' channels.
+    enum: [1, 2, 3, 4, 5, 6]
+
+  current-ramping-time-ms:
+    description: LED current ramping time in milliseconds.
+    enum: [2, 4, 8, 16, 32, 64, 128, 192, 256, 320, 384, 448, 512, 576, 640]
kinetic,current-ramp-delay-ms
+
+  led-ramping-time-ms:
kinetic,led-enable-ramp-delay-ms

So both are similar to existing regulator properties.

Best regards,
Krzysztof
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