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-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";
};