backlight: qcom-wled: Add new properties for PMI8998 (059dcfcb) · Commits · 戴 / test

Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt

+63 −11

Original line number	Diff line number	Diff line
		@@ -20,7 +20,7 @@ platforms. The PMIC is connected to the host processor via SPMI bus.
		- default-brightness
		Usage: optional
		Value type: <u32>
		Definition: brightness value on boot, value from: 0-4095
		Definition: brightness value on boot, value from: 0-4095.
		Default: 2048

		- label
		@@ -48,20 +48,24 @@ platforms. The PMIC is connected to the host processor via SPMI bus.
		- qcom,current-limit
		Usage: optional
		Value type: <u32>
		Definition: mA; per-string current limit
		value: For pm8941: from 0 to 25 with 5 mA step
		Default 20 mA.
		For pmi8998: from 0 to 30 with 5 mA step
		Default 25 mA.
		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
		1680. Default: 805 mA.
		For pmi8998: one of: 105, 280, 450, 620, 970, 1150, 1300,
		1500. Default: 970 mA
		1500. Default: 970 mA.

		- qcom,switching-freq
		Usage: optional
		@@ -76,15 +80,62 @@ platforms. The PMIC is connected to the host processor via SPMI bus.
		Usage: optional
		Value type: <u32>
		Definition: V; Over-voltage protection limit; one of:
		27, 29, 32, 35. default: 29V
		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 from 1 to 3. default: 2
		This property is supported only for PM8941.
		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:

		@@ -99,4 +150,5 @@ pm8941-wled@d800 {
		qcom,switching-freq = <1600>;
		qcom,ovp = <29>;
		qcom,num-strings = <2>;
		qcom,enabled-strings = <0 1>;
		};

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