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Add document describing device tree bindings for MAX14577 MFD drivers: MFD core, extcon, regulator and charger. Both MAX14577 and MAX77836 chipsets are documented. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
147 lines
3.6 KiB
Plaintext
147 lines
3.6 KiB
Plaintext
Maxim MAX14577/77836 Multi-Function Device
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MAX14577 is a Multi-Function Device with Micro-USB Interface Circuit, Li+
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Battery Charger and SFOUT LDO output for powering USB devices. It is
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interfaced to host controller using I2C.
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MAX77836 additionally contains PMIC (with two LDO regulators) and Fuel Gauge.
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Required properties:
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- compatible : Must be "maxim,max14577" or "maxim,max77836".
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- reg : I2C slave address for the max14577 chip (0x25 for max14577/max77836)
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- interrupts : IRQ line for the chip.
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- interrupt-parent : The parent interrupt controller.
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Required nodes:
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- charger :
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Node for configuring the charger driver.
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Required properties:
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- compatible : "maxim,max14577-charger"
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or "maxim,max77836-charger"
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- maxim,fast-charge-uamp : Current in uA for Fast Charge;
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Valid values:
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- for max14577: 90000 - 950000;
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- for max77836: 45000 - 475000;
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- maxim,eoc-uamp : Current in uA for End-Of-Charge mode;
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Valid values:
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- for max14577: 50000 - 200000;
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- for max77836: 5000 - 100000;
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- maxim,ovp-uvolt : OverVoltage Protection Threshold in uV;
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In an overvoltage condition, INT asserts and charging
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stops. Valid values:
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- 6000000, 6500000, 7000000, 7500000;
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- maxim,constant-uvolt : Battery Constant Voltage in uV;
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Valid values:
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- 4000000 - 4280000 (step by 20000);
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- 4350000;
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Optional nodes:
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- max14577-muic/max77836-muic :
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Node used only by extcon consumers.
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Required properties:
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- compatible : "maxim,max14577-muic" or "maxim,max77836-muic"
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- regulators :
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Required properties:
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- compatible : "maxim,max14577-regulator"
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or "maxim,max77836-regulator"
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May contain a sub-node per regulator from the list below. Each
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sub-node should contain the constraints and initialization information
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for that regulator. See regulator.txt for a description of standard
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properties for these sub-nodes.
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List of valid regulator names:
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- for max14577: CHARGER, SAFEOUT.
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- for max77836: CHARGER, SAFEOUT, LDO1, LDO2.
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The SAFEOUT is a fixed voltage regulator so there is no need to specify
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voltages for it.
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Example:
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#include <dt-bindings/interrupt-controller/irq.h>
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max14577@25 {
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compatible = "maxim,max14577";
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reg = <0x25>;
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interrupt-parent = <&gpx1>;
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interrupts = <5 IRQ_TYPE_NONE>;
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muic: max14577-muic {
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compatible = "maxim,max14577-muic";
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};
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regulators {
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compatible = "maxim,max14577-regulator";
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SAFEOUT {
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regulator-name = "SAFEOUT";
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};
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CHARGER {
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regulator-name = "CHARGER";
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regulator-min-microamp = <90000>;
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regulator-max-microamp = <950000>;
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regulator-boot-on;
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};
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};
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charger {
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compatible = "maxim,max14577-charger";
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maxim,constant-uvolt = <4350000>;
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maxim,fast-charge-uamp = <450000>;
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maxim,eoc-uamp = <50000>;
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maxim,ovp-uvolt = <6500000>;
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};
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};
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max77836@25 {
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compatible = "maxim,max77836";
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reg = <0x25>;
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interrupt-parent = <&gpx1>;
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interrupts = <5 IRQ_TYPE_NONE>;
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muic: max77836-muic {
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compatible = "maxim,max77836-muic";
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};
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regulators {
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compatible = "maxim,max77836-regulator";
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SAFEOUT {
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regulator-name = "SAFEOUT";
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};
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CHARGER {
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regulator-name = "CHARGER";
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regulator-min-microamp = <90000>;
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regulator-max-microamp = <950000>;
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regulator-boot-on;
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};
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LDO1 {
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regulator-name = "LDO1";
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regulator-min-microvolt = <2700000>;
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regulator-max-microvolt = <2700000>;
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};
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LDO2 {
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regulator-name = "LDO2";
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regulator-min-microvolt = <800000>;
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regulator-max-microvolt = <3950000>;
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};
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};
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charger {
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compatible = "maxim,max77836-charger";
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maxim,constant-uvolt = <4350000>;
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maxim,fast-charge-uamp = <225000>;
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maxim,eoc-uamp = <7500>;
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maxim,ovp-uvolt = <6500000>;
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};
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};
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