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authorMark A. Greer <mgreer@animalcreek.com>2014-08-07 17:41:42 -0700
committerSamuel Ortiz <sameo@linux.intel.com>2014-09-01 00:06:55 +0200
commitc2b33de06d23e66f9df34f515704cd3bfa8dd260 (patch)
treec41392dbda08384bc527d954643f54a41bc61fb7 /Documentation/devicetree/bindings/net/nfc
parent3bd14233aa0733fbc6c3f75ec928f1a393522644 (diff)
downloadkernel-c2b33de06d23e66f9df34f515704cd3bfa8dd260.tar.gz
NFC: trf7970a: Document the 'vin-voltage-override' DTS property
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>
Diffstat (limited to 'Documentation/devicetree/bindings/net/nfc')
-rw-r--r--Documentation/devicetree/bindings/net/nfc/trf7970a.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/nfc/trf7970a.txt b/Documentation/devicetree/bindings/net/nfc/trf7970a.txt
index 1e436133685f..02a381d30448 100644
--- a/Documentation/devicetree/bindings/net/nfc/trf7970a.txt
+++ b/Documentation/devicetree/bindings/net/nfc/trf7970a.txt
@@ -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";
};