* [PATCH v2 2/2] dt-bindings: add bindings for QCOM flash LED [not found] <20220929121544.1064279-1-quic_fenglinw@quicinc.com> @ 2022-09-29 12:15 ` Fenglin Wu 2022-09-29 12:40 ` Krzysztof Kozlowski 0 siblings, 1 reply; 6+ messages in thread From: Fenglin Wu @ 2022-09-29 12:15 UTC (permalink / raw) To: linux-arm-msm, linux-kernel, krzysztof.kozlowski, Andy Gross, Bjorn Andersson, Konrad Dybcio, Pavel Machek, Rob Herring, Krzysztof Kozlowski, Fenglin Wu, linux-leds, devicetree Cc: collinsd, subbaram Add binding document for flash LED module inside Qualcomm Technologies, Inc. PMICs. Signed-off-by: Fenglin Wu <quic_fenglinw@quicinc.com> --- .../bindings/leds/qcom,spmi-flash-led.yaml | 120 ++++++++++++++++++ 1 file changed, 120 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/qcom,spmi-flash-led.yaml diff --git a/Documentation/devicetree/bindings/leds/qcom,spmi-flash-led.yaml b/Documentation/devicetree/bindings/leds/qcom,spmi-flash-led.yaml new file mode 100644 index 000000000000..3ab1113a7b28 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/qcom,spmi-flash-led.yaml @@ -0,0 +1,120 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/qcom,spmi-flash-led.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Flash LED device inside Qualcomm Technologies, Inc. PMICs + +maintainers: + - Fenglin Wu <quic_fenglinw@quicinc.com> + +description: | + Flash LED controller is present inside some Qualcomm Technologies, Inc. PMICs. + The flash LED module can have different number of LED channels supported + e.g. 3 or 4. There are some different registers between them but they can + both support maximum current up to 1.5 A per channel and they can also support + ganging 2 channels together to supply maximum current up to 2 A. The current + will be split symmetrically on each channel and they will be enabled and + disabled at the same time. + +properties: + compatible: + items: + - enum: + - qcom,pm8150c-flash-led + - qcom,pm8150l-flash-led + - qcom,pm8350c-flash-led + - const: qcom,spmi-flash-led + reg: + description: address offset of the flash LED controller + maxItems: 1 + +patternProperties: + "^led[0-3]$": + type: object + $ref: common.yaml# + unevaluatedProperties: false + description: | + Represents the physical LED components which are connected to the + flash LED channels' output. + + properties: + led-sources: + description: | + The HW indices of the flash LED channels that connect to the + physical LED + allOf: + - minItems: 1 + maxItems: 2 + items: + enum: [1, 2, 3, 4] + + led-max-microamp: + description: | + The maximum current value when LED is not operating in flash mode (i.e. torch mode) + Valid values when an LED is connected to one flash LED channel: + 5000 - 500000, step by 5000 + Valid values when an LED is connected to two flash LED channels: + 10000 - 1000000, step by 10000 + minimum: 5000 + maximum: 1000000 + + flash-max-microamp: + description: | + The maximum current value when LED is operating in flash mode. + Valid values when an LED is connected to one flash LED channel: + 12500 - 1500000, step by 12500 + Valid values when an LED is connected to two flash LED channels: + 25000 - 2000000, step by 12500 + minimum: 12500 + maximum: 2000000 + + flash-max-timeout-us: + description: | + The maximum timeout value when LED is operating in flash mode. + Valid values: 10000 - 1280000, step by 10000 + minimum: 10000 + maximum: 1280000 + + required: + - led-sources + - led-max-microamp + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include <dt-bindings/leds/common.h> + spmi_bus { + #address-cells = <1>; + #size-cells = <0>; + led-controller@ee00 { + compatible = "qcom,pm8350c-flash-led", "qcom,spmi-flash-led"; + reg = <0xee00>; + + led0 { + function = LED_FUNCTION_FLASH; + color = <LED_COLOR_ID_WHITE>; + led-sources = <1>, <4>; + led-max-microamp = <300000>; + flash-max-microamp = <2000000>; + flash-max-timeout-us = <1280000>; + function-enumerator = <0>; + }; + + led1 { + function = LED_FUNCTION_FLASH; + color = <LED_COLOR_ID_YELLOW>; + led-sources = <2>, <3>; + led-max-microamp = <300000>; + flash-max-microamp = <2000000>; + flash-max-timeout-us = <1280000>; + function-enumerator = <1>; + }; + }; + }; -- 2.25.1 ^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH v2 2/2] dt-bindings: add bindings for QCOM flash LED 2022-09-29 12:15 ` [PATCH v2 2/2] dt-bindings: add bindings for QCOM flash LED Fenglin Wu @ 2022-09-29 12:40 ` Krzysztof Kozlowski 2022-09-30 1:10 ` Fenglin Wu 2022-09-30 19:33 ` Rob Herring 0 siblings, 2 replies; 6+ messages in thread From: Krzysztof Kozlowski @ 2022-09-29 12:40 UTC (permalink / raw) To: Fenglin Wu, linux-arm-msm, linux-kernel, Andy Gross, Bjorn Andersson, Konrad Dybcio, Pavel Machek, Rob Herring, Krzysztof Kozlowski, linux-leds, devicetree Cc: collinsd, subbaram On 29/09/2022 14:15, Fenglin Wu wrote: > Add binding document for flash LED module inside Qualcomm Technologies, > Inc. PMICs. > > Signed-off-by: Fenglin Wu <quic_fenglinw@quicinc.com> Thank you for your patch. There is something to discuss/improve. > + reg: > + description: address offset of the flash LED controller > + maxItems: 1 > + > +patternProperties: > + "^led[0-3]$": In such case: ^led-[0-9]$" > + type: object > + $ref: common.yaml# > + unevaluatedProperties: false > + description: | > + Represents the physical LED components which are connected to the > + flash LED channels' output. > + > + properties: > + led-sources: > + description: | > + The HW indices of the flash LED channels that connect to the > + physical LED > + allOf: > + - minItems: 1 > + maxItems: 2 > + items: > + enum: [1, 2, 3, 4] > + > + led-max-microamp: > + description: | > + The maximum current value when LED is not operating in flash mode (i.e. torch mode) > + Valid values when an LED is connected to one flash LED channel: > + 5000 - 500000, step by 5000 > + Valid values when an LED is connected to two flash LED channels: > + 10000 - 1000000, step by 10000 > + minimum: 5000 > + maximum: 1000000 > + > + flash-max-microamp: > + description: | > + The maximum current value when LED is operating in flash mode. > + Valid values when an LED is connected to one flash LED channel: > + 12500 - 1500000, step by 12500 > + Valid values when an LED is connected to two flash LED channels: > + 25000 - 2000000, step by 12500 > + minimum: 12500 > + maximum: 2000000 > + > + flash-max-timeout-us: > + description: | > + The maximum timeout value when LED is operating in flash mode. > + Valid values: 10000 - 1280000, step by 10000 > + minimum: 10000 > + maximum: 1280000 > + > + required: > + - led-sources > + - led-max-microamp > + > +required: > + - compatible > + - reg > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/leds/common.h> > + spmi_bus { No underscores in node names, so just "bus" > + #address-cells = <1>; > + #size-cells = <0>; Best regards, Krzysztof ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2 2/2] dt-bindings: add bindings for QCOM flash LED 2022-09-29 12:40 ` Krzysztof Kozlowski @ 2022-09-30 1:10 ` Fenglin Wu 2022-09-30 19:33 ` Rob Herring 1 sibling, 0 replies; 6+ messages in thread From: Fenglin Wu @ 2022-09-30 1:10 UTC (permalink / raw) To: Krzysztof Kozlowski, linux-arm-msm, linux-kernel, Andy Gross, Bjorn Andersson, Konrad Dybcio, Pavel Machek, Rob Herring, Krzysztof Kozlowski, linux-leds, devicetree Cc: collinsd, subbaram On 2022/9/29 20:40, Krzysztof Kozlowski wrote: > On 29/09/2022 14:15, Fenglin Wu wrote: >> Add binding document for flash LED module inside Qualcomm Technologies, >> Inc. PMICs. >> >> Signed-off-by: Fenglin Wu <quic_fenglinw@quicinc.com> > > Thank you for your patch. There is something to discuss/improve. > >> + reg: >> + description: address offset of the flash LED controller >> + maxItems: 1 >> + >> +patternProperties: >> + "^led[0-3]$": > > In such case: ^led-[0-9]$" Sure, I will update in next patchset > >> + type: object >> + $ref: common.yaml# >> + unevaluatedProperties: false >> + description: | >> + Represents the physical LED components which are connected to the >> + flash LED channels' output. >> + >> + properties: >> + led-sources: >> + description: | >> + The HW indices of the flash LED channels that connect to the >> + physical LED >> + allOf: >> + - minItems: 1 >> + maxItems: 2 >> + items: >> + enum: [1, 2, 3, 4] >> + >> + led-max-microamp: >> + description: | >> + The maximum current value when LED is not operating in flash mode (i.e. torch mode) >> + Valid values when an LED is connected to one flash LED channel: >> + 5000 - 500000, step by 5000 >> + Valid values when an LED is connected to two flash LED channels: >> + 10000 - 1000000, step by 10000 >> + minimum: 5000 >> + maximum: 1000000 >> + >> + flash-max-microamp: >> + description: | >> + The maximum current value when LED is operating in flash mode. >> + Valid values when an LED is connected to one flash LED channel: >> + 12500 - 1500000, step by 12500 >> + Valid values when an LED is connected to two flash LED channels: >> + 25000 - 2000000, step by 12500 >> + minimum: 12500 >> + maximum: 2000000 >> + >> + flash-max-timeout-us: >> + description: | >> + The maximum timeout value when LED is operating in flash mode. >> + Valid values: 10000 - 1280000, step by 10000 >> + minimum: 10000 >> + maximum: 1280000 >> + >> + required: >> + - led-sources >> + - led-max-microamp >> + >> +required: >> + - compatible >> + - reg >> + >> +additionalProperties: false >> + >> +examples: >> + - | >> + #include <dt-bindings/leds/common.h> >> + spmi_bus { > > No underscores in node names, so just "bus" Sure, I will update in next patchset > >> + #address-cells = <1>; >> + #size-cells = <0>; > > Best regards, > Krzysztof > ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2 2/2] dt-bindings: add bindings for QCOM flash LED 2022-09-29 12:40 ` Krzysztof Kozlowski 2022-09-30 1:10 ` Fenglin Wu @ 2022-09-30 19:33 ` Rob Herring 2022-10-03 12:49 ` Krzysztof Kozlowski 2022-10-10 9:47 ` Fenglin Wu 1 sibling, 2 replies; 6+ messages in thread From: Rob Herring @ 2022-09-30 19:33 UTC (permalink / raw) To: Krzysztof Kozlowski, Fenglin Wu Cc: linux-arm-msm, linux-kernel, Andy Gross, Bjorn Andersson, Konrad Dybcio, Pavel Machek, Krzysztof Kozlowski, linux-leds, devicetree, collinsd, subbaram On Thu, Sep 29, 2022 at 02:40:05PM +0200, Krzysztof Kozlowski wrote: > On 29/09/2022 14:15, Fenglin Wu wrote: > > Add binding document for flash LED module inside Qualcomm Technologies, > > Inc. PMICs. > > > > Signed-off-by: Fenglin Wu <quic_fenglinw@quicinc.com> > > Thank you for your patch. There is something to discuss/improve. > > > + reg: > > + description: address offset of the flash LED controller > > + maxItems: 1 > > + > > +patternProperties: > > + "^led[0-3]$": > > In such case: ^led-[0-9]$" > > > + type: object > > + $ref: common.yaml# > > + unevaluatedProperties: false > > + description: | > > + Represents the physical LED components which are connected to the > > + flash LED channels' output. > > + > > + properties: > > + led-sources: This is for when the power source and LED connection are programmable. IOW, when 'reg' is not enough to describe the configuration. If you only have LED channels 1-4 with a fixed connection to LED pins/output 1-4, then use 'reg'. > > + description: | > > + The HW indices of the flash LED channels that connect to the > > + physical LED > > + allOf: > > + - minItems: 1 > > + maxItems: 2 > > + items: > > + enum: [1, 2, 3, 4] > > + > > + led-max-microamp: > > + description: | > > + The maximum current value when LED is not operating in flash mode (i.e. torch mode) > > + Valid values when an LED is connected to one flash LED channel: > > + 5000 - 500000, step by 5000 > > + Valid values when an LED is connected to two flash LED channels: > > + 10000 - 1000000, step by 10000 > > + minimum: 5000 > > + maximum: 1000000 anyOf: - minimum: 5000 maximum: 500000 multipleOf: 5000 - minimum: 10000 maximum: 1000000 multipleOf: 10000 Drop any description that's captured by the constraints. > > + > > + flash-max-microamp: > > + description: | > > + The maximum current value when LED is operating in flash mode. > > + Valid values when an LED is connected to one flash LED channel: > > + 12500 - 1500000, step by 12500 > > + Valid values when an LED is connected to two flash LED channels: > > + 25000 - 2000000, step by 12500 > > + minimum: 12500 > > + maximum: 2000000 > > + > > + flash-max-timeout-us: > > + description: | > > + The maximum timeout value when LED is operating in flash mode. > > + Valid values: 10000 - 1280000, step by 10000 > > + minimum: 10000 > > + maximum: 1280000 Similar comment for these 2. > > + > > + required: > > + - led-sources > > + - led-max-microamp > > + > > +required: > > + - compatible > > + - reg > > + > > +additionalProperties: false > > + > > +examples: > > + - | > > + #include <dt-bindings/leds/common.h> > > + spmi_bus { > > No underscores in node names, so just "bus" SPMI is something else though... ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2 2/2] dt-bindings: add bindings for QCOM flash LED 2022-09-30 19:33 ` Rob Herring @ 2022-10-03 12:49 ` Krzysztof Kozlowski 2022-10-10 9:47 ` Fenglin Wu 1 sibling, 0 replies; 6+ messages in thread From: Krzysztof Kozlowski @ 2022-10-03 12:49 UTC (permalink / raw) To: Rob Herring, Fenglin Wu Cc: linux-arm-msm, linux-kernel, Andy Gross, Bjorn Andersson, Konrad Dybcio, Pavel Machek, Krzysztof Kozlowski, linux-leds, devicetree, collinsd, subbaram On 30/09/2022 21:33, Rob Herring wrote: >>> + >>> + required: >>> + - led-sources >>> + - led-max-microamp >>> + >>> +required: >>> + - compatible >>> + - reg >>> + >>> +additionalProperties: false >>> + >>> +examples: >>> + - | >>> + #include <dt-bindings/leds/common.h> >>> + spmi_bus { >> >> No underscores in node names, so just "bus" > > SPMI is something else though... True, then rather spmi - already used in DTS. Best regards, Krzysztof ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2 2/2] dt-bindings: add bindings for QCOM flash LED 2022-09-30 19:33 ` Rob Herring 2022-10-03 12:49 ` Krzysztof Kozlowski @ 2022-10-10 9:47 ` Fenglin Wu 1 sibling, 0 replies; 6+ messages in thread From: Fenglin Wu @ 2022-10-10 9:47 UTC (permalink / raw) To: Rob Herring, Krzysztof Kozlowski Cc: linux-arm-msm, linux-kernel, Andy Gross, Bjorn Andersson, Konrad Dybcio, Pavel Machek, Krzysztof Kozlowski, linux-leds, devicetree, Subbaraman Narayanamurthy, quic_collinsd On 2022/10/1 3:33, Rob Herring wrote: > On Thu, Sep 29, 2022 at 02:40:05PM +0200, Krzysztof Kozlowski wrote: >> On 29/09/2022 14:15, Fenglin Wu wrote: >>> Add binding document for flash LED module inside Qualcomm Technologies, >>> Inc. PMICs. >>> >>> Signed-off-by: Fenglin Wu <quic_fenglinw@quicinc.com> >> >> Thank you for your patch. There is something to discuss/improve. >> >>> + reg: >>> + description: address offset of the flash LED controller >>> + maxItems: 1 >>> + >>> +patternProperties: >>> + "^led[0-3]$": >> >> In such case: ^led-[0-9]$" >> >>> + type: object >>> + $ref: common.yaml# >>> + unevaluatedProperties: false >>> + description: | >>> + Represents the physical LED components which are connected to the >>> + flash LED channels' output. >>> + >>> + properties: >>> + led-sources: > > This is for when the power source and LED connection are programmable. > IOW, when 'reg' is not enough to describe the configuration. If you only > have LED channels 1-4 with a fixed connection to LED pins/output 1-4, > then use 'reg'. > I think using led-sources here is more appropriate. The LED connection can be programmable to match with the board design. The flash module has 4 channels (current outputs, indexed from 1 to 4) and the LEDs can be connected to either one or two of them depends on the design. Such as, if the design only requires LEDs with 1.5 A maximum current, then the HW just connects one channel to each LED and specify the corresponding channel index in the led-sources. Or if the design requires LEDs supporting up to 2 A maximum current, then the HW needs to gang 2 channels' output together and specify the HW indices in led-sources accordingly. >>> + description: | >>> + The HW indices of the flash LED channels that connect to the >>> + physical LED >>> + allOf: >>> + - minItems: 1 >>> + maxItems: 2 >>> + items: >>> + enum: [1, 2, 3, 4] >>> + >>> + led-max-microamp: >>> + description: | >>> + The maximum current value when LED is not operating in flash mode (i.e. torch mode) >>> + Valid values when an LED is connected to one flash LED channel: >>> + 5000 - 500000, step by 5000 >>> + Valid values when an LED is connected to two flash LED channels: >>> + 10000 - 1000000, step by 10000 >>> + minimum: 5000 >>> + maximum: 1000000 > > anyOf: > - minimum: 5000 > maximum: 500000 > multipleOf: 5000 > - minimum: 10000 > maximum: 1000000 > multipleOf: 10000 > > Drop any description that's captured by the constraints. Thanks for the suggestion. I will update it accordingly. > >>> + >>> + flash-max-microamp: >>> + description: | >>> + The maximum current value when LED is operating in flash mode. >>> + Valid values when an LED is connected to one flash LED channel: >>> + 12500 - 1500000, step by 12500 >>> + Valid values when an LED is connected to two flash LED channels: >>> + 25000 - 2000000, step by 12500 >>> + minimum: 12500 >>> + maximum: 2000000 >>> + >>> + flash-max-timeout-us: >>> + description: | >>> + The maximum timeout value when LED is operating in flash mode. >>> + Valid values: 10000 - 1280000, step by 10000 >>> + minimum: 10000 >>> + maximum: 1280000 > > Similar comment for these 2. Done > >>> + >>> + required: >>> + - led-sources >>> + - led-max-microamp >>> + >>> +required: >>> + - compatible >>> + - reg >>> + >>> +additionalProperties: false >>> + >>> +examples: >>> + - | >>> + #include <dt-bindings/leds/common.h> >>> + spmi_bus { >> >> No underscores in node names, so just "bus" > > SPMI is something else though... Sure, will update it to spmi > ^ permalink raw reply [flat|nested] 6+ messages in thread
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[not found] <20220929121544.1064279-1-quic_fenglinw@quicinc.com>
2022-09-29 12:15 ` [PATCH v2 2/2] dt-bindings: add bindings for QCOM flash LED Fenglin Wu
2022-09-29 12:40 ` Krzysztof Kozlowski
2022-09-30 1:10 ` Fenglin Wu
2022-09-30 19:33 ` Rob Herring
2022-10-03 12:49 ` Krzysztof Kozlowski
2022-10-10 9:47 ` Fenglin Wu
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