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Commit 07c5195d authored by Subbaraman Narayanamurthy's avatar Subbaraman Narayanamurthy
Browse files

dt-bindings: regulator: Add qpnp-amoled driver bindings 



QPNP AMOLED regulator driver supports configuring triple power
supply (OLEDB, AB, IBB) used in AMOLED panels. Add DT bindings
for it.

Change-Id: If19f2e969c848ad276781a61f725eaf656059c30
Signed-off-by: default avatarSubbaraman Narayanamurthy <subbaram@codeaurora.org>
parent f2836bd6

Documentation/devicetree/bindings/regulator/qpnp-amoled-regulator.txt

0 → 100644
+95 −0
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QPNP AMOLED Triple power supply regulator devices



QPNP OLEDB module provides AVDD voltage rail output for bias and QPNP AB/IBB

module provides ELVDD/ELVSS voltage rail output to power up AMOLED panels.



For PM8150A, allowed voltage levels are as below:

AVDD - Programmable output from 4.925 V to 8.1 V.

ELVDD  - Programmable output from 4.6 V to 6.1 V.

ELVSS  - Programmable output from -0.8 V to -5.4 V.





This document describes the bindings for AMOLED regulator devices.



=======================

Required Node Structure

=======================



AMOLED regulator device must be described in two level of device nodes.



- compatible:

	Usage:      required

	Value type: <string>

	Definition: should be "qcom,qpnp-amoled-regulator"



==========================================

Second Level Nodes - OLEDB/AB/IBB specific

==========================================



Subnode common properties for OLEDB and AB/IBB regulator devices.



- reg:

	Usage:      required

	Value type: <prop-encoded-array>

	Definition: Register base and length for OLEDB, AB and IBB modules

		    which are represented as child nodes.



- reg-names:

	Usage:      required

	Value type: <string>

	Definition: The name of the register defined in the reg property.



- regulator-name:

	Usage:      required

	Value type: <string>

	Definition: A string used to describe the regulator.



- regulator-min-microvolt:

	Usage:      required

	Value type: <u32>

	Definition: Minimum voltage (in uV) supported by the regulator.



- regulator-max-microvolt:

	Usage:      required

	Value type: <u32>

	Definition: Maximum voltage (in uV) supported by the regulator.



- qcom,swire-control:

	Usage:	    optional

	Value type: <empty>

	Definition: A boolean property to specify that the regulator output is

		    controlled by SWIRE signal. When this is specified, output

		    voltage of the regulator is not controlled by SW.



Example:



pm8150a_amoled: oledb@e000 {

	compatible = "qcom,qpnp-amoled-regulator";



	oledb_vreg: oledb@e000 {

		reg = <0xe000 0x100>;

		reg-names = "oledb_base";

		regulator-name = "oledb_vreg";

		regulator-min-microvolt = <4925000>;

		regulator-max-microvolt = <8100000>;

		qcom,swire-control;

	};



	ab_vreg: ab@de00 {

		reg = <0xde00 0x100>;

		reg-names = "ab_base";

		regulator-name = "ab_vreg";

		regulator-min-microvolt = <4600000>;

		regulator-max-microvolt = <6100000>;

		qcom,swire-control;

	};



	ibb_vreg: ibb@dc00 {

		reg = <0xdc00 0x100>;

		reg-names = "ibb_base";

		regulator-name = "ibb_vreg";

		regulator-min-microvolt = <800000>;

		regulator-max-microvolt = <5400000>;

		qcom,swire-control;

	};

};