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SubjectRe: [PATCH V3 1/4] backlight: qcom-wled: convert the wled bindings to .yaml format
On 2020-03-10 20:31, Daniel Thompson wrote:
> On Mon, Mar 09, 2020 at 06:55:59PM +0530, Kiran Gunda wrote:
>> Convert the qcom-wled bindings from .txt to .yaml format.
>>
>> Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
>
> Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
>
Thanks.
>
>> ---
>> .../bindings/leds/backlight/qcom-wled.txt | 154
>> -----------------
>> .../bindings/leds/backlight/qcom-wled.yaml | 184
>> +++++++++++++++++++++
>> 2 files changed, 184 insertions(+), 154 deletions(-)
>> delete mode 100644
>> Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
>> create mode 100644
>> Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml
>>
>> diff --git
>> a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
>> b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
>> deleted file mode 100644
>> index c06863b..0000000
>> --- a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
>> +++ /dev/null
>> @@ -1,154 +0,0 @@
>> -Binding for Qualcomm Technologies, Inc. WLED driver
>> -
>> -WLED (White Light Emitting Diode) driver is used for controlling
>> display
>> -backlight that is part of PMIC on Qualcomm Technologies, Inc.
>> reference
>> -platforms. The PMIC is connected to the host processor via SPMI bus.
>> -
>> -- compatible
>> - Usage: required
>> - Value type: <string>
>> - Definition: should be one of:
>> - "qcom,pm8941-wled"
>> - "qcom,pmi8998-wled"
>> - "qcom,pm660l-wled"
>> -
>> -- reg
>> - Usage: required
>> - Value type: <prop encoded array>
>> - Definition: Base address of the WLED modules.
>> -
>> -- default-brightness
>> - Usage: optional
>> - Value type: <u32>
>> - Definition: brightness value on boot, value from: 0-4095.
>> - Default: 2048
>> -
>> -- label
>> - Usage: required
>> - Value type: <string>
>> - Definition: The name of the backlight device
>> -
>> -- qcom,cs-out
>> - Usage: optional
>> - Value type: <bool>
>> - Definition: enable current sink output.
>> - This property is supported only for PM8941.
>> -
>> -- qcom,cabc
>> - Usage: optional
>> - Value type: <bool>
>> - Definition: enable content adaptive backlight control.
>> -
>> -- qcom,ext-gen
>> - Usage: optional
>> - Value type: <bool>
>> - Definition: use externally generated modulator signal to dim.
>> - This property is supported only for PM8941.
>> -
>> -- qcom,current-limit
>> - Usage: optional
>> - Value type: <u32>
>> - Definition: mA; per-string current limit; value from 0 to 25 with
>> - 1 mA step. Default 20 mA.
>> - This property is supported only for pm8941.
>> -
>> -- qcom,current-limit-microamp
>> - Usage: optional
>> - Value type: <u32>
>> - Definition: uA; per-string current limit; value from 0 to 30000
>> with
>> - 2500 uA step. Default 25 mA.
>> -
>> -- qcom,current-boost-limit
>> - Usage: optional
>> - Value type: <u32>
>> - Definition: mA; boost current limit.
>> - For pm8941: one of: 105, 385, 525, 805, 980, 1260, 1400,
>> - 1680. Default: 805 mA.
>> - For pmi8998: one of: 105, 280, 450, 620, 970, 1150, 1300,
>> - 1500. Default: 970 mA.
>> -
>> -- qcom,switching-freq
>> - Usage: optional
>> - Value type: <u32>
>> - Definition: kHz; switching frequency; one of: 600, 640, 685, 738,
>> - 800, 872, 960, 1066, 1200, 1371, 1600, 1920, 2400, 3200,
>> - 4800, 9600.
>> - Default: for pm8941: 1600 kHz
>> - for pmi8998: 800 kHz
>> -
>> -- qcom,ovp
>> - Usage: optional
>> - Value type: <u32>
>> - Definition: V; Over-voltage protection limit; one of:
>> - 27, 29, 32, 35. Default: 29V
>> - This property is supported only for PM8941.
>> -
>> -- qcom,ovp-millivolt
>> - Usage: optional
>> - Value type: <u32>
>> - Definition: mV; Over-voltage protection limit;
>> - For pmi8998: one of 18100, 19600, 29600, 31100.
>> - Default 29600 mV.
>> - If this property is not specified for PM8941, it
>> - falls back to "qcom,ovp" property.
>> -
>> -- qcom,num-strings
>> - Usage: optional
>> - Value type: <u32>
>> - Definition: #; number of led strings attached;
>> - value: For PM8941 from 1 to 3. Default: 2
>> - For PMI8998 from 1 to 4.
>> -
>> -- interrupts
>> - Usage: optional
>> - Value type: <prop encoded array>
>> - Definition: Interrupts associated with WLED. This should be
>> - "short" and "ovp" interrupts. Interrupts can be
>> - specified as per the encoding listed under
>> - Documentation/devicetree/bindings/spmi/
>> - qcom,spmi-pmic-arb.txt.
>> -
>> -- interrupt-names
>> - Usage: optional
>> - Value type: <string>
>> - Definition: Interrupt names associated with the interrupts.
>> - Must be "short" and "ovp". The short circuit detection
>> - is not supported for PM8941.
>> -
>> -- qcom,enabled-strings
>> - Usage: optional
>> - Value tyoe: <u32 array>
>> - Definition: Array of the WLED strings numbered from 0 to 3. Each
>> - string of leds are operated individually. Specify the
>> - list of strings used by the device. Any combination of
>> - led strings can be used.
>> -
>> -- qcom,external-pfet
>> - Usage: optional
>> - Value type: <bool>
>> - Definition: Specify if external PFET control for short circuit
>> - protection is used. This property is supported only
>> - for PMI8998.
>> -
>> -- qcom,auto-string-detection
>> - Usage: optional
>> - Value type: <bool>
>> - Definition: Enables auto-detection of the WLED string
>> configuration.
>> - This feature is not supported for PM8941.
>> -
>> -
>> -Example:
>> -
>> -pm8941-wled@d800 {
>> - compatible = "qcom,pm8941-wled";
>> - reg = <0xd800>;
>> - label = "backlight";
>> -
>> - qcom,cs-out;
>> - qcom,current-limit = <20>;
>> - qcom,current-boost-limit = <805>;
>> - qcom,switching-freq = <1600>;
>> - qcom,ovp = <29>;
>> - qcom,num-strings = <2>;
>> - qcom,enabled-strings = <0 1>;
>> -};
>> diff --git
>> a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml
>> b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml
>> new file mode 100644
>> index 0000000..d334f81
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml
>> @@ -0,0 +1,184 @@
>> +# SPDX-License-Identifier: GPL-2.0-only
>> +%YAML 1.2
>> +---
>> +$id:
>> http://devicetree.org/schemas/bindings/leds/backlight/qcom-wled.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Binding for Qualcomm Technologies, Inc. WLED driver
>> +
>> +maintainers:
>> + - Lee Jones <lee.jones@linaro.org>
>> +
>> +description: |
>> + WLED (White Light Emitting Diode) driver is used for controlling
>> display
>> + backlight that is part of PMIC on Qualcomm Technologies, Inc.
>> reference
>> + platforms. The PMIC is connected to the host processor via SPMI
>> bus.
>> +
>> +properties:
>> + compatible :
>> + enum:
>> + - qcom,pm8941-wled
>> + - qcom,pmi8998-wled
>> + - qcom,pm660l-wled
>> +
>> + reg:
>> + maxItems: 1
>> +
>> + default-brightness:
>> + maxItems: 1
>> + description:
>> + brightness value on boot, value from 0-4095.
>> + allOf:
>> + - $ref: /schemas/types.yaml#/definitions/uint32
>> + default: 2048
>> +
>> + label:
>> + maxItems: 1
>> + description:
>> + The name of the backlight device.
>> + allOf:
>> + - $ref: /schemas/types.yaml#/definitions/string
>> +
>> + qcom,cs-out:
>> + description:
>> + enable current sink output.
>> + This property is supported only for PM8941.
>> + type: boolean
>> +
>> + qcom,cabc:
>> + description:
>> + enable content adaptive backlight control.
>> + type: boolean
>> +
>> + qcom,ext-gen:
>> + description:
>> + use externally generated modulator signal to dim.
>> + This property is supported only for PM8941.
>> + type: boolean
>> +
>> + qcom,current-limit:
>> + maxItems: 1
>> + allOf:
>> + - $ref: /schemas/types.yaml#/definitions/uint32
>> + description:
>> + mA; per-string current limit; value from 0 to 25 with
>> + 1 mA step. This property is supported only for pm8941.
>> + default: 20
>> +
>> + qcom,current-limit-microamp:
>> + maxItems: 1
>> + allOf:
>> + - $ref: /schemas/types.yaml#/definitions/uint32
>> + description:
>> + uA; per-string current limit; value from 0 to 30000 with
>> + 2500 uA step.
>> + default: 25
>> +
>> + qcom,current-boost-limit:
>> + maxItems: 1
>> + allOf:
>> + - $ref: /schemas/types.yaml#/definitions/uint32
>> + description:
>> + mA; boost current limit.
>> + For pm8941 one of 105, 385, 525, 805, 980, 1260, 1400, 1680.
>> + Default, 805 mA.
>> + For pmi8998 one of 105, 280, 450, 620, 970, 1150, 1300,
>> + 1500. Default 970 mA.
>> +
>> + qcom,switching-freq:
>> + maxItems: 1
>> + allOf:
>> + - $ref: /schemas/types.yaml#/definitions/uint32
>> + description:
>> + kHz; switching frequency; one of 600, 640, 685, 738,
>> + 800, 872, 960, 1066, 1200, 1371, 1600, 1920, 2400, 3200,
>> + 4800, 9600.
>> + Default for pm8941 1600 kHz
>> + for pmi8998 800 kHz
>> +
>> + qcom,ovp:
>> + maxItems: 1
>> + allOf:
>> + - $ref: /schemas/types.yaml#/definitions/uint32
>> + description:
>> + V; Over-voltage protection limit; one of 27, 29, 32, 35.
>> Default 29V
>> + This property is supported only for PM8941.
>> +
>> + qcom,ovp-millivolt:
>> + maxItems: 1
>> + allOf:
>> + - $ref: /schemas/types.yaml#/definitions/uint32
>> + description:
>> + mV; Over-voltage protection limit;
>> + For pmi8998 one of 18100, 19600, 29600, 31100.
>> + Default 29600 mV.
>> + If this property is not specified for PM8941, it
>> + falls back to "qcom,ovp" property.
>> +
>> + qcom,num-strings:
>> + maxItems: 1
>> + allOf:
>> + - $ref: /schemas/types.yaml#/definitions/uint32
>> + description:
>> + number of led strings attached;
>> + value for PM8941 from 1 to 3. Default 2
>> + For PMI8998 from 1 to 4.
>> +
>> + interrupts:
>> + maxItems: 2
>> + description:
>> + Interrupts associated with WLED. This should be
>> + "short" and "ovp" interrupts. Interrupts can be
>> + specified as per the encoding listed under
>> + Documentation/devicetree/bindings/spmi/
>> + qcom,spmi-pmic-arb.txt.
>> +
>> + interrupt-names:
>> + description:
>> + Interrupt names associated with the interrupts.
>> + Must be "short" and "ovp". The short circuit detection
>> + is not supported for PM8941.
>> +
>> + qcom,enabled-strings:
>> + maxItems: 1
>> + allOf:
>> + - $ref: /schemas/types.yaml#/definitions/uint32-array
>> + description:
>> + Array of the WLED strings numbered from 0 to 3. Each
>> + string of leds are operated individually. Specify the
>> + list of strings used by the device. Any combination of
>> + led strings can be used.
>> +
>> + qcom,external-pfet:
>> + description:
>> + Specify if external PFET control for short circuit
>> + protection is used. This property is supported only
>> + for PMI8998.
>> + type: boolean
>> +
>> + qcom,auto-string-detection:
>> + description:
>> + Enables auto-detection of the WLED string configuration.
>> + This feature is not supported for PM8941.
>> + type: boolean
>> +
>> +required:
>> + - compatible
>> + - reg
>> + - label
>> +
>> +examples:
>> + - |
>> + pm8941-wled@d800 {
>> + compatible = "qcom,pm8941-wled";
>> + reg = <0xd800 0x100>;
>> + label = "backlight";
>> +
>> + qcom,cs-out;
>> + qcom,current-limit = <20>;
>> + qcom,current-boost-limit = <805>;
>> + qcom,switching-freq = <1600>;
>> + qcom,ovp = <29>;
>> + qcom,num-strings = <2>;
>> + qcom,enabled-strings = <0 1>;
>> + };
>> --
>> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora
>> Forum,
>> a Linux Foundation Collaborative Project

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