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NFC: trf7970a: Document the 'vin-voltage-override' DTS property

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The trf7970a driver recently had support for the
'vin-voltage-override' property added to it.  This
property is used to override the value given by
the regulator subsystem for the VIN pin's voltage.

Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mark A. Greer 2014-08-07 17:41:42 -07:00 committed by Samuel Ortiz
parent 3bd14233aa
commit c2b33de06d
1 changed files with 2 additions and 0 deletions
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Documentation/devicetree/bindings/net/nfc/trf7970a.txt
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@ -13,6 +13,7 @@ Optional SoC Specific Properties:
- pinctrl-names: Contains only one value - "default".
- pintctrl-0: Specifies the pin control groups used for this controller.
- autosuspend-delay: Specify autosuspend delay in milliseconds.
- vin-voltage-override: Specify voltage of VIN pin in microvolts.
Example (for ARM-based BeagleBone with TRF7970A on SPI1):
@ -30,6 +31,7 @@ Example (for ARM-based BeagleBone with TRF7970A on SPI1):
ti,enable-gpios = <&gpio2 2 GPIO_ACTIVE_LOW>,
<&gpio2 5 GPIO_ACTIVE_LOW>;
vin-supply = <&ldo3_reg>;
vin-voltage-override = <5000000>;
autosuspend-delay = <30000>;
status = "okay";
};