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|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/leds/ti,tps61310.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Texas Instruments TPS6131X flash LED driver
maintainers:
- Matthias Fend <matthias.fend@emfend.at>
description: |
The TPS61310/TPS61311 is a flash LED driver with I2C interface.
Its power stage is capable of supplying a maximum total current of roughly 1500mA.
The TPS6131x provides three constant-current sinks, capable of sinking
up to 2 x 400mA (LED1 and LED3) and 800mA (LED2) in flash mode.
In torch mode, each sink (LED1, LED2, LED3) supports currents up to 175mA.
Since the three current sinks share most of the control components such as
flash timer, control logic, safety timer and the operating mode, they cannot
be used completely independently of each other. Therefore, only one LED is
supported, but the current sinks can be combined accordingly.
The data sheet can be found at:
https://www.ti.com/lit/ds/symlink/tps61310.pdf
properties:
compatible:
oneOf:
- items:
- enum:
- ti,tps61311
- const: ti,tps61310
- items:
- const: ti,tps61310
reg:
maxItems: 1
reset-gpios:
maxItems: 1
description: GPIO connected to NRESET pin
ti,valley-current-limit:
type: boolean
description:
Reduce the valley peak current limit from 1750mA to 1250mA (TPS61310) or
from 2480mA to 1800mA (TPS61311).
led:
type: object
$ref: common.yaml#
unevaluatedProperties: false
properties:
led-sources:
minItems: 1
maxItems: 3
items:
enum: [1, 2, 3]
led-max-microamp:
oneOf:
- minimum: 50000
maximum: 350000
multipleOf: 50000
- minimum: 25000
maximum: 525000
multipleOf: 25000
flash-max-microamp:
oneOf:
- minimum: 50000
maximum: 800000
multipleOf: 50000
- minimum: 25000
maximum: 1500000
multipleOf: 25000
flash-max-timeout-us:
enum: [ 5300, 10700, 16000, 21300, 26600, 32000, 37300, 68200, 71500,
102200, 136300, 170400, 204500, 340800, 579300, 852000 ]
required:
- led-sources
- led-max-microamp
- flash-max-microamp
- flash-max-timeout-us
required:
- compatible
- reg
- led
additionalProperties: false
examples:
- |
#include <dt-bindings/leds/common.h>
#include <dt-bindings/gpio/gpio.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
led-controller@33 {
compatible = "ti,tps61311", "ti,tps61310";
reg = <0x33>;
reset-gpios = <&gpio1 0 GPIO_ACTIVE_LOW>;
led {
function = LED_FUNCTION_FLASH;
color = <LED_COLOR_ID_WHITE>;
led-sources = <1>, <2>, <3>;
led-max-microamp = <525000>;
flash-max-microamp = <1500000>;
flash-max-timeout-us = <852000>;
};
};
};
|
