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dt: power: bq24257-charger: Cover additional devices 

Extend the bq24257 charger's device tree documentation to cover the
bq24250 and bq24251 devices as well feature additions.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Andreas Dannenberg 2015-09-28 17:33:49 -05:00 committed by Sebastian Reichel
parent 3b84b8efef
commit fff59df105
1 changed files with 48 additions and 5 deletions
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53
Documentation/devicetree/bindings/power/bq24257.txt
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Binding for TI bq24257 Li-Ion Charger
Binding for TI bq24250/bq24251/bq24257 Li-Ion Charger
Required properties:
- compatible: Should contain one of the following:
* "ti,bq24250"
* "ti,bq24251"
* "ti,bq24257"
- reg: integer, i2c address of the device.
- reg: integer, i2c address of the device.
- interrupt-parent: Should be the phandle for the interrupt controller. Use in
conjunction with "interrupts".
- interrupts: Interrupt mapping for GPIO IRQ (configure for both edges). Use in
conjunction with "interrupt-parent".
- ti,battery-regulation-voltage: integer, maximum charging voltage in uV.
- ti,charge-current: integer, maximum charging current in uA.
- ti,termination-current: integer, charge will be terminated when current in
constant-voltage phase drops below this value (in uA).
- ti,charge-current: integer, maximum charging current in uA.
- ti,termination-current: integer, charge will be terminated when current in
constant-voltage phase drops below this value (in uA).
Optional properties:
- pg-gpios: GPIO used for connecting the bq2425x device PG (Power Good) pin.
This pin is not available on all devices however it should be used if
possible as this is the recommended way to obtain the charger's input PG
state. If this pin is not specified a software-based approach for PG
detection is used.
- ti,current-limit: The maximum current to be drawn from the charger's input
(in uA). If this property is not specified, the input limit current is
set automatically using USB D+/D- signal based charger type detection.
If the hardware does not support the D+/D- based detection, a default
of 500,000 is used (=500mA) instead.
- ti,ovp-voltage: Configures the over voltage protection voltage (in uV). If
not specified a default of 6,5000,000 (=6.5V) is used.
- ti,in-dpm-voltage: Configures the threshold input voltage for the dynamic
power path management (in uV). If not specified a default of 4,360,000
(=4.36V) is used.
Example:
bq24257 {
compatible = "ti,bq24257";
reg = <0x6a>;
interrupt-parent = <&gpio1>;
interrupts = <16 IRQ_TYPE_EDGE_BOTH>;
pg-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
ti,battery-regulation-voltage = <4200000>;
ti,charge-current = <1000000>;
ti,termination-current = <50000>;
};
Example:
bq24250 {
compatible = "ti,bq24250";
reg = <0x6a>;
interrupt-parent = <&gpio1>;
interrupts = <16 IRQ_TYPE_EDGE_BOTH>;
ti,battery-regulation-voltage = <4200000>;
ti,charge-current = <500000>;
ti,termination-current = <50000>;
ti,current-limit = <900000>;
ti,ovp-voltage = <9500000>;
ti,in-dpm-voltage = <4440000>;
};