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dt-bindings: leds: Add Texas Instruments TPS6131x flash LED driver
Document Texas Instruments TPS61310/TPS61311 flash LED driver devicetree
bindings.
Signed-off-by: Matthias Fend <matthias.fend@emfend.at>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250514-leds-tps6131x-v5-1-a4fb9e7f2c47@emfend.at
Signed-off-by: Lee Jones <lee@kernel.org>
authored by
Matthias Fend
and committed by
Lee Jones
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6a09ae82
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Documentation/devicetree/bindings/leds/ti,tps61310.yaml
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Documentation/devicetree/bindings/leds/ti,tps61310.yaml
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/leds/ti,tps61310.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Texas Instruments TPS6131X flash LED driver
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maintainers:
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- Matthias Fend <matthias.fend@emfend.at>
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description: |
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The TPS61310/TPS61311 is a flash LED driver with I2C interface.
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Its power stage is capable of supplying a maximum total current of roughly 1500mA.
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The TPS6131x provides three constant-current sinks, capable of sinking
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up to 2 x 400mA (LED1 and LED3) and 800mA (LED2) in flash mode.
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In torch mode, each sink (LED1, LED2, LED3) supports currents up to 175mA.
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Since the three current sinks share most of the control components such as
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flash timer, control logic, safety timer and the operating mode, they cannot
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be used completely independently of each other. Therefore, only one LED is
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supported, but the current sinks can be combined accordingly.
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The data sheet can be found at:
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https://www.ti.com/lit/ds/symlink/tps61310.pdf
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properties:
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compatible:
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oneOf:
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- items:
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- enum:
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- ti,tps61311
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- const: ti,tps61310
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- items:
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- const: ti,tps61310
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reg:
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maxItems: 1
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reset-gpios:
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maxItems: 1
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description: GPIO connected to NRESET pin
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ti,valley-current-limit:
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type: boolean
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description:
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Reduce the valley peak current limit from 1750mA to 1250mA (TPS61310) or
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from 2480mA to 1800mA (TPS61311).
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led:
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type: object
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$ref: common.yaml#
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unevaluatedProperties: false
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properties:
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led-sources:
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minItems: 1
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maxItems: 3
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items:
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enum: [1, 2, 3]
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led-max-microamp:
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oneOf:
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- minimum: 50000
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maximum: 350000
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multipleOf: 50000
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- minimum: 25000
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maximum: 525000
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multipleOf: 25000
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+
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flash-max-microamp:
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oneOf:
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- minimum: 50000
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maximum: 800000
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multipleOf: 50000
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- minimum: 25000
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maximum: 1500000
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multipleOf: 25000
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flash-max-timeout-us:
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enum: [ 5300, 10700, 16000, 21300, 26600, 32000, 37300, 68200, 71500,
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102200, 136300, 170400, 204500, 340800, 579300, 852000 ]
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required:
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- led-sources
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- led-max-microamp
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- flash-max-microamp
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- flash-max-timeout-us
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required:
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- compatible
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- reg
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- led
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/leds/common.h>
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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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led-controller@33 {
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compatible = "ti,tps61311", "ti,tps61310";
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reg = <0x33>;
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reset-gpios = <&gpio1 0 GPIO_ACTIVE_LOW>;
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led {
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function = LED_FUNCTION_FLASH;
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color = <LED_COLOR_ID_WHITE>;
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led-sources = <1>, <2>, <3>;
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led-max-microamp = <525000>;
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flash-max-microamp = <1500000>;
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flash-max-timeout-us = <852000>;
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};
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};
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};