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dt-bindings: leds: Add Qualcomm Light Pulse Generator binding
This adds the binding document describing the three hardware blocks related to the Light Pulse Generator found in a wide range of Qualcomm PMICs. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Reviewed-by: Rob Herring <robh@kernel.org>
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Documentation/devicetree/bindings/leds/leds-qcom-lpg.yaml
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) | ||
%YAML 1.2 | ||
--- | ||
$id: http://devicetree.org/schemas/leds/leds-qcom-lpg.yaml# | ||
$schema: http://devicetree.org/meta-schemas/core.yaml# | ||
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title: Qualcomm Light Pulse Generator | ||
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maintainers: | ||
- Bjorn Andersson <bjorn.andersson@linaro.org> | ||
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description: > | ||
The Qualcomm Light Pulse Generator consists of three different hardware blocks; | ||
a ramp generator with lookup table, the light pulse generator and a three | ||
channel current sink. These blocks are found in a wide range of Qualcomm PMICs. | ||
properties: | ||
compatible: | ||
enum: | ||
- qcom,pm8150b-lpg | ||
- qcom,pm8150l-lpg | ||
- qcom,pm8916-pwm | ||
- qcom,pm8941-lpg | ||
- qcom,pm8994-lpg | ||
- qcom,pmc8180c-lpg | ||
- qcom,pmi8994-lpg | ||
- qcom,pmi8998-lpg | ||
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"#pwm-cells": | ||
const: 2 | ||
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"#address-cells": | ||
const: 1 | ||
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"#size-cells": | ||
const: 0 | ||
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qcom,power-source: | ||
$ref: /schemas/types.yaml#/definitions/uint32 | ||
description: | ||
power-source used to drive the output, as defined in the datasheet. | ||
Should be specified if the TRILED block is present | ||
enum: [0, 1, 3] | ||
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qcom,dtest: | ||
$ref: /schemas/types.yaml#/definitions/uint32-matrix | ||
description: > | ||
A list of integer pairs, where each pair represent the dtest line the | ||
particular channel should be connected to and the flags denoting how the | ||
value should be outputed, as defined in the datasheet. The number of | ||
pairs should be the same as the number of channels. | ||
items: | ||
items: | ||
- description: dtest line to attach | ||
- description: flags for the attachment | ||
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multi-led: | ||
type: object | ||
$ref: leds-class-multicolor.yaml# | ||
properties: | ||
"#address-cells": | ||
const: 1 | ||
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"#size-cells": | ||
const: 0 | ||
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patternProperties: | ||
"^led@[0-9a-f]$": | ||
type: object | ||
$ref: common.yaml# | ||
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patternProperties: | ||
"^led@[0-9a-f]$": | ||
type: object | ||
$ref: common.yaml# | ||
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properties: | ||
reg: true | ||
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required: | ||
- reg | ||
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required: | ||
- compatible | ||
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additionalProperties: false | ||
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examples: | ||
- | | ||
#include <dt-bindings/leds/common.h> | ||
led-controller { | ||
compatible = "qcom,pmi8994-lpg"; | ||
#address-cells = <1>; | ||
#size-cells = <0>; | ||
qcom,power-source = <1>; | ||
qcom,dtest = <0 0>, | ||
<0 0>, | ||
<0 0>, | ||
<4 1>; | ||
led@1 { | ||
reg = <1>; | ||
color = <LED_COLOR_ID_GREEN>; | ||
function = LED_FUNCTION_INDICATOR; | ||
function-enumerator = <1>; | ||
}; | ||
led@2 { | ||
reg = <2>; | ||
color = <LED_COLOR_ID_GREEN>; | ||
function = LED_FUNCTION_INDICATOR; | ||
function-enumerator = <0>; | ||
default-state = "on"; | ||
}; | ||
led@3 { | ||
reg = <3>; | ||
color = <LED_COLOR_ID_GREEN>; | ||
function = LED_FUNCTION_INDICATOR; | ||
function-enumerator = <2>; | ||
}; | ||
led@4 { | ||
reg = <4>; | ||
color = <LED_COLOR_ID_GREEN>; | ||
function = LED_FUNCTION_INDICATOR; | ||
function-enumerator = <3>; | ||
}; | ||
}; | ||
- | | ||
#include <dt-bindings/leds/common.h> | ||
led-controller { | ||
compatible = "qcom,pmi8994-lpg"; | ||
#address-cells = <1>; | ||
#size-cells = <0>; | ||
qcom,power-source = <1>; | ||
multi-led { | ||
color = <LED_COLOR_ID_RGB>; | ||
function = LED_FUNCTION_STATUS; | ||
#address-cells = <1>; | ||
#size-cells = <0>; | ||
led@1 { | ||
reg = <1>; | ||
color = <LED_COLOR_ID_RED>; | ||
}; | ||
led@2 { | ||
reg = <2>; | ||
color = <LED_COLOR_ID_GREEN>; | ||
}; | ||
led@3 { | ||
reg = <3>; | ||
color = <LED_COLOR_ID_BLUE>; | ||
}; | ||
}; | ||
}; | ||
- | | ||
pwm-controller { | ||
compatible = "qcom,pm8916-pwm"; | ||
#pwm-cells = <2>; | ||
}; | ||
... |