Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
137 lines
2.9 KiB
YAML
137 lines
2.9 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/leds/backlight/ti,lm3509.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: TI LM3509 High Efficiency Boost for White LED's and/or OLED Displays
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maintainers:
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- Patrick Gansterer <paroga@paroga.com>
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description:
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The LM3509 current mode boost converter offers two separate outputs.
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https://www.ti.com/product/LM3509
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properties:
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compatible:
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const: ti,lm3509
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reg:
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maxItems: 1
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"#address-cells":
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const: 1
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"#size-cells":
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const: 0
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reset-gpios:
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maxItems: 1
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ti,brightness-rate-of-change-us:
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description: Brightness Rate of Change in microseconds.
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enum: [51, 13000, 26000, 52000]
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ti,oled-mode:
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description: Enable OLED mode.
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type: boolean
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patternProperties:
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"^led@[01]$":
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type: object
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description: Properties for a string of connected LEDs.
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$ref: common.yaml#
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properties:
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reg:
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description:
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The control register that is used to program the two current sinks.
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The LM3509 has two registers (BMAIN and BSUB) and are represented
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as 0 or 1 in this property. The two current sinks can be controlled
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independently with both registers, or register BMAIN can be
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configured to control both sinks with the led-sources property.
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minimum: 0
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maximum: 1
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label: true
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led-sources:
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minItems: 1
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maxItems: 2
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items:
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minimum: 0
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maximum: 1
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default-brightness:
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minimum: 0
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maximum: 31
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default: 18
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max-brightness:
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minimum: 0
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maximum: 31
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default: 31
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required:
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- reg
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additionalProperties: false
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required:
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- compatible
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- reg
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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backlight@36 {
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compatible = "ti,lm3509";
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reg = <0x36>;
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reset-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>;
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ti,oled-mode;
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ti,brightness-rate-of-change-us = <52000>;
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#address-cells = <1>;
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#size-cells = <0>;
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led@0 {
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reg = <0>;
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led-sources = <0 1>;
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label = "lcd-backlight";
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default-brightness = <12>;
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max-brightness = <31>;
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};
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};
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};
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- |
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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backlight@36 {
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compatible = "ti,lm3509";
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reg = <0x36>;
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#address-cells = <1>;
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#size-cells = <0>;
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led@0 {
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reg = <0>;
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default-brightness = <12>;
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};
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led@1 {
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reg = <1>;
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default-brightness = <15>;
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};
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};
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};
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