linux-kernel - [PATCH v6 1/2] dt-bindings: leds: backlight: Add Kinetic KTZ8866 backlight

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Message-Id: <20230118131002.15453-1-lujianhua000@gmail.com>
Date:   Wed, 18 Jan 2023 21:10:01 +0800
From:   Jianhua Lu <lujianhua000@...il.com>
To:     Lee Jones <lee@...nel.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>, Pavel Machek <pavel@....cz>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Helge Deller <deller@....de>
Cc:     linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
        linux-fbdev@...r.kernel.org, Jianhua Lu <lujianhua000@...il.com>
Subject: [PATCH v6 1/2] dt-bindings: leds: backlight: Add Kinetic KTZ8866 backlight

Add Kinetic KTZ8866 backlight binding documentation.

Signed-off-by: Jianhua Lu <lujianhua000@...il.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.

 .../leds/backlight/kinetic,ktz8866.yaml       | 59 +++++++++++++++++++
 1 file changed, 59 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..ca0deba14523
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml
@@ -0,0 +1,59 @@
+# 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@...il.com>
+
+description: |
+  The Kinetic Technologies KTZ8866 is a high efficiency 6-sinks led backlight
+  with dual lcd bias power.
+  https://www.kinet-ic.com/ktz8866/
+
+allOf:
+  - $ref: common.yaml#
+
+properties:
+  compatible:
+    const: kinetic,ktz8866
+
+  current-num-sinks:
+    description: Number of LED current sinks.
+    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]
+
+  led-ramping-time-ms:
+    description: |
+      LED on/off ramping time in milliseconds, note that the case 0 will be mapped
+      to 512μs because ktz8866 can't ramp faster than it.
+    enum: [0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384]
+
+  enable-lcd-bias:
+    description: Set if we want to output bias power supply for LCD.
+    type: boolean
+
+required:
+  - compatible
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    backlight {
+        compatible = "kinetic,ktz8866";
+
+        pinctrl-names = "default";
+        pinctrl-0 = <&bl_en_default>;
+
+        current-num-sinks = <5>;
+        current-ramping-time-ms = <128>;
+        led-ramping-time-ms = <1>;
+        enable-lcd-bias;
+    };
-- 
2.39.1