Hi Jaewon,
On 01/23/2015 02:02 PM, Jaewon Kim wrote:
> Add document describing device tree bindings for max77843 MFD.
> Drivers: MFD core, regulator, extcon, charger and fuelgauge.
>
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> Cc: Pawel Moll <pawel.moll@xxxxxxx>
> Cc: Mark Rutland <mark.rutland@xxxxxxx>
> Cc: Ian Campbell <ijc+devicetree@xxxxxxxxxxxxxx>
> Cc: Kumar Gala <galak@xxxxxxxxxxxxxx>
> Cc: Lee Jones <lee.jones@xxxxxxxxxx>
> Cc: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
> Cc: Sebastian Reichel <sre@xxxxxxxxxx>
> Cc: Mark Brown <broonie@xxxxxxxxxx>
> Signed-off-by: Beomho Seo <beomho.seo@xxxxxxxxxxx>
> Signed-off-by: Jaewon Kim <jaewon02.kim@xxxxxxxxxxx>
> ---
> Documentation/devicetree/bindings/mfd/max77843.txt | 87 ++++++++++++++++++++
> 1 file changed, 87 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mfd/max77843.txt
>
> diff --git a/Documentation/devicetree/bindings/mfd/max77843.txt b/Documentation/devicetree/bindings/mfd/max77843.txt
> new file mode 100644
> index 0000000..6895604
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/max77843.txt
> @@ -0,0 +1,87 @@
> +Maxim MAX77843 multi-function device
> +
> +MAX77843 is a Multi-Function Device with the following submodules:
> +- PMIC : 2 SAFEOUT LDOs for USB device
> +- CHARGER : Li+ battery charger with Fuel Gauge
> +- MUIC : Micro USB Interface Circuit
> +- HAPTIC : motor control driver for haptics
HAPTIC ?
> +- LED : 4 channel RGBW LED
LED ?
This patchset don't include andy haptic/led drivers.
I think it is un-necessary information.
When you implement the haptic/led driver, you will add the information
for haptic/led driver.
> +
> +It is interfaced to host controller using I2C.
> +
> +Required properties:
> +- compatible : Must be "maxim,max77843".
> +- reg : I2C slave address of PMIC block.
> +- interrupts : I2C line for main SoCs.
> +- interrupt-parent : The parent of interrupt controller.
> +
> +Optional properties:
> +- regulators : The regulators of max77843 have to be instantiated under subnode
> + named "regulators" using the following format.
> +
> + [*]refer : Documentation/devicetree/bindings/regulator/regulator.txt
> +
> + regulators {
> + SAFEOUT {
> + regulator-name = "SAFEOUT";
> + };
> + }
> +
> + List of valid regulator names:
> + - SAFEOUT1, SAFEOUT2, CHARGER.
> +
> +- max77843-muic : This properties used by extcon consumers.
> + Required properties:
> + - compatible : Must be "maxim,max77842-muic".
> +
> +- max77843-charger : There battery charger of MAX77843 have to be instantiated
> + under sub-node named "max77843-charger" using the following format.
> + Required properties:
> + - compatible : Must be "maxim,max77842-charger".
> + - maxim,fast-charge-uamp : Fast charge current levels are
> + 100 mA to 3150 mA programmed by I2C per 100 mA.
> + - maxim,top-off-uamp : Top off current threshold levels are
> + 125 mA to 650 mA programmed by I2C per 75 mA.
> + - maxim,input-uamp-limit : Input current limit levels are
> + 100 mA to 3533 mA programmed by I2C per 33 mA.
> +- max77843-fuelgauge : There fuelgauge of MAX77843 have to be instantiated
> + under sub-node named "max77843-fuelgauge" using the following format.
> + Required properties:
> + - compatible : Must be "maxim,max77842-fuelgauge".
> +
> +Example:
> + max77843@66 {
> + compatible = "samsung,max77843";
> + reg = <0x66>;
> + interrupt-parent = <&gpa1>;
> + interrupts = <5 2>;
> +
> + regulators {
> + SAFEOUT1 {
> + regulator-name = "SAFEOUT1";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <4950000>;
> + };
> + SAFEOUT2 {
> + regulator-name = "SAFEOUT2";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <4950000>;
> + };
As I knew, max77843 regulator driver supprot 'CHARGER' regulator.
I think you have to add the 'CHARGER' dt node for regulators.
> + };
> +
> + max77843-muic {
> + compatible = "maxim,max77843-muic";
> + };
> +
> + max77843-charger {
> + compatible = "maxim,max77843-charger";
> + maxim,fast-charge-uamp = <450000>;
> + maxim,top-off-uamp = <125000>;
> + maxim,input-uamp-limit = <500000>;
> + };
> +
> + max77843-fuelgauge {
> + compatible = "maxim,max77843-fuelgauge";
> + };
> +
> + };
>
Thanks,
Chanwoo Choi
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