From: Guan Ben <redacted>

Make the EN2 pin optional. This is useful for boards,
which have this pin fix wired, for example to ground.

Signed-off-by: Guan Ben <redacted>
Signed-off-by: Mark Jonas <redacted>
Signed-off-by: Heiko Schocher <redacted>

---

 .../devicetree/bindings/net/nfc/trf7970a.txt       |  4 ++--
 drivers/nfc/trf7970a.c                             | 26 ++++++++++++----------
 2 files changed, 16 insertions(+), 14 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/nfc/trf7970a.txt b/Documentation/devicetree/bindings/net/nfc/trf7970a.txt
index 32b35a0..5889a3d 100644
--- a/Documentation/devicetree/bindings/net/nfc/trf7970a.txt
+++ b/Documentation/devicetree/bindings/net/nfc/trf7970a.txt

@@ -5,8 +5,8 @@ Required properties:
 - spi-max-frequency: Maximum SPI frequency (<= 2000000).
 - interrupt-parent: phandle of parent interrupt handler.
 - interrupts: A single interrupt specifier.
-- ti,enable-gpios: Two GPIO entries used for 'EN' and 'EN2' pins on the
-  TRF7970A.
+- ti,enable-gpios: One or two GPIO entries used for 'EN' and 'EN2' pins on the
+  TRF7970A. EN2 is optional.