commit 58d46f538b602d4a93fbae945e5c844a90c01f14
author Geoff Lansberry <geoff@kuvee.com> Mon Apr 18 15:48:39 2016 -0400
committer Samuel Ortiz <sameo@linux.intel.com> Mon Jul 04 12:20:21 2016 +0200
tree c20dba019040c1aea48544dbb7d9f11a40eba925
parent fa1ce54ea38f7f83473fce62e64fefbd7ebd170e

NFC: trf7970a: add TI recommended write of zero to Register 0x18

Signed-off-by: Geoff Lansberry <geoff@kuvee.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/nfc/trf7970a.c

diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c
index 10842b7..26c9dbb 100644
--- a/drivers/nfc/trf7970a.c
+++ b/drivers/nfc/trf7970a.c
@@ -1048,6 +1048,10 @@
 	if (ret)
 		goto err_out;
 
+	ret = trf7970a_write(trf, TRF7970A_NFC_TARGET_LEVEL, 0);
+	if (ret)
+		goto err_out;
+
 	usleep_range(1000, 2000);
 
 	trf->chip_status_ctrl &= ~TRF7970A_CHIP_STATUS_RF_ON;