Messages in this thread | | | Date | Fri, 17 Apr 2020 17:23:46 +0530 | From | kgunda@codeauro ... | Subject | Re: [PATCH V5 1/4] backlight: qcom-wled: convert the wled bindings to .yaml format |
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On 2020-04-15 20:39, Rob Herring wrote: > On Tue, Apr 07, 2020 at 09:17:07PM +0530, Kiran Gunda wrote: >> Convert the qcom-wled bindings from .txt to .yaml format. >> Also replace PM8941 to WLED3 and PMI8998 to WLED4. >> >> Signed-off-by: Kiran Gunda <kgunda@codeaurora.org> >> Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org> >> Acked-by: Daniel Thompson <daniel.thompson@linaro.org> >> --- >> .../bindings/leds/backlight/qcom-wled.txt | 154 >> ---------------- >> .../bindings/leds/backlight/qcom-wled.yaml | 201 >> +++++++++++++++++++++ >> 2 files changed, 201 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.yaml >> b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml >> new file mode 100644 >> index 0000000..770e780 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml >> @@ -0,0 +1,201 @@ >> +# SPDX-License-Identifier: GPL-2.0-only >> +%YAML 1.2 >> +--- >> +$id: http://devicetree.org/schemas/leds/backlight/qcom-wled.yaml# >> +$schema: http://devicetree.org/meta-schemas/core.yaml# >> + >> +title: Binding for Qualcomm Technologies, Inc. WLED driver >> + >> +maintainers: >> + - Bjorn Andersson <bjorn.andersson@linaro.org> >> + - Kiran Gunda <kgunda@codeaurora.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: >> + description: >> + brightness value on boot. >> + minimum: 0 >> + maximum: 4095 >> + default: 2048 >> + >> + label: true >> + >> + qcom,cs-out: >> + description: >> + enable current sink output. >> + This property is supported only for WLED3. >> + 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 WLED3. >> + type: boolean >> + >> + qcom,current-limit: >> + description: >> + mA; per-string current limit. >> + This property is supported only for WLED3. >> + allOf: >> + - $ref: /schemas/types.yaml#/definitions/uint32 >> + default: 20 >> + minimum: 0 >> + maximum: 25 >> + multipleOf: 1 > > No point in defining a multiple of 1. > >> + >> + qcom,current-limit-microamp: >> + description: >> + uA; per-string current limit. >> + default: 25 >> + minimum: 0 >> + maximum: 30000 >> + multipleOf: 25 >> + >> + qcom,current-boost-limit: >> + description: >> + mA; boost current limit. >> + allOf: >> + - $ref: /schemas/types.yaml#/definitions/uint32 >> + >> + qcom,switching-freq: >> + description: >> + kHz; switching frequency. >> + allOf: >> + - $ref: /schemas/types.yaml#/definitions/uint32 >> + - enum: [ 600, 640, 685, 738, 800, 872, 960, 1066, 1200, 1371, >> 1600, 1920, 2400, 3200, 4800, 9600 ] >> + >> + qcom,ovp: >> + description: >> + V; Over-voltage protection limit. >> + This property is supported only for WLED3. >> + allOf: >> + - $ref: /schemas/types.yaml#/definitions/uint32 >> + - enum: [ 27, 29, 32, 35 ] >> + - default: 29 >> + >> + qcom,ovp-millivolt: >> + description: >> + Over-voltage protection limit. This property is for WLED4 only. >> + allOf: >> + - $ref: /schemas/types.yaml#/definitions/uint32 >> + - enum: [ 18100, 19600, 29600, 31100 ] >> + - default: 29600 >> + >> + qcom,num-strings: >> + description: >> + number of led strings attached. >> + allOf: >> + - $ref: /schemas/types.yaml#/definitions/uint32 >> + >> + qcom,enabled-strings: >> + 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. >> + allOf: >> + - $ref: /schemas/types.yaml#/definitions/uint32-array >> + minItems: 1 >> + maxItems: 4 >> + >> + qcom,external-pfet: >> + description: >> + Specify if external PFET control for short circuit >> + protection is used. This property is supported only >> + for WLED4. >> + type: boolean >> + >> + qcom,auto-string-detection: >> + description: >> + Enables auto-detection of the WLED string configuration. >> + This feature is not supported for WLED3. >> + type: boolean >> + >> +allOf: >> + - if: >> + properties: >> + compatible: >> + contains: >> + const: qcom,pm8941-wled >> + >> + then: >> + properties: >> + qcom,current-boost-limit: >> + enum: [ 105, 385, 525, 805, 980, 1260, 1400, 1680 ] >> + default: 805 >> + >> + qcom,switching-freq: >> + default: 1600 >> + >> + qcom,num-strings: >> + enum: [ 1, 2, 3 ] >> + >> + interrupts: >> + items: >> + - description: over voltage protection interrupt. >> + >> + interrupt-names: >> + items: >> + - const: ovp >> + >> + else: >> + properties: >> + qcom,current-boost-limit: >> + enum: [ 105, 280, 450, 620, 970, 1150, 1300, 1500 ] >> + default: 970 >> + >> + qcom,switching-freq: >> + default: 800 >> + >> + qcom,num-strings: >> + enum: [ 1, 2, 3, 4 ] >> + >> + interrupts: >> + items: >> + - description: over voltage protection interrupt. >> + - description: short circuit interrupt. >> + >> + interrupt-names: >> + items: >> + - const: ovp >> + - const: short > > Move these 2 props to the main section adding a 'minItems: 1'. Then > just > define 'minItems: 2' here and 'maxItems: 1' in the 'then' clause. > >> + >> +required: >> + - compatible >> + - reg >> + - label > > Add: > > additionalProperties: false > >> + >> +examples: >> + - | >> + backlight@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 >> Thanks for reviewing. I will submit the next revision with all the fixes.
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