From: ChiYuan Huang <[email protected]>
Add mt6370 backlight binding documentation.
Signed-off-by: ChiYuan Huang <[email protected]>
---
.../backlight/mediatek,mt6370-backlight.yaml | 110 ++++++++++++++++++
1 file changed, 110 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml
diff --git a/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml
new file mode 100644
index 000000000000..81d72ed44be4
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml
@@ -0,0 +1,110 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/backlight/mediatek,mt6370-backlight.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek MT6370 Backlight
+
+maintainers:
+ - ChiaEn Wu <[email protected]>
+
+description: |
+ MT6370 is a highly-integrated smart power management IC, which includes a
+ single cell Li-Ion/Li-Polymer switching battery charger, a USB Type-C &
+ Power Delivery (PD) controller, dual flash LED current sources, a RGB LED
+ driver, a backlight WLED driver, a display bias driver and a general LDO for
+ portable devices.
+
+ For the LCD backlight, it can provide 4 channel WLED driving capability.
+ Each channel driving current is up to 30mA
+
+allOf:
+ - $ref: common.yaml#
+
+properties:
+ compatible:
+ const: mediatek,mt6370-backlight
+
+ default-brightness:
+ minimum: 0
+ maximum: 2048
+
+ max-brightness:
+ minimum: 0
+ maximum: 2048
+
+ enable-gpios:
+ description: External backlight 'enable' pin
+ maxItems: 1
+
+ mediatek,bled-pwm-enable:
+ description: |
+ Enable external PWM input for backlight dimming
+ type: boolean
+
+ mediatek,bled-pwm-hys-enable:
+ description: |
+ Enable the backlight input-hysteresis for PWM mode
+ type: boolean
+
+ mediatek,bled-pwm-hys-sel:
+ $ref: /schemas/types.yaml#/definitions/uint8
+ enum: [0, 1, 2, 3]
+ description: |
+ Backlight PWM hysteresis input level selection.
+ value mapping:
+ - 0: 1bit
+ - 1: 2bit
+ - 2: 4bit
+ - 3: 6bit
+
+ mediatek,bled-ovp-shutdown:
+ description: |
+ Enable the backlight shutdown when OVP level triggered
+ type: boolean
+
+ mediatek,bled-ovp-level-sel:
+ $ref: /schemas/types.yaml#/definitions/uint8
+ enum: [0, 1, 2, 3]
+ description: |
+ Backlight OVP level selection.
+ value mapping:
+ - 0: 17V
+ - 1: 21V
+ - 2: 25V
+ - 3: 29V
+
+ mediatek,bled-ocp-shutdown:
+ description: |
+ Enable the backlight shutdown when OCP level triggerred.
+ type: boolean
+
+ mediatek,bled-ocp-level-sel:
+ $ref: /schemas/types.yaml#/definitions/uint8
+ enum: [0, 1, 2, 3]
+ description: |
+ Backlight OC level selection.
+ value mapping:
+ - 0: 900mA
+ - 1: 1200mA
+ - 2: 1500mA
+ - 3: 1800mA
+
+ mediatek,bled-channel-use:
+ $ref: /schemas/types.yaml#/definitions/uint8
+ description: |
+ Backlight LED channel to be used.
+ Each bit mapping to:
+ - 0: CH4
+ - 1: CH3
+ - 2: CH2
+ - 3: CH1
+ minimum: 1
+ maximum: 15
+
+required:
+ - compatible
+ - mediatek,bled-channel-use
+
+additionalProperties: false
--
2.25.1