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[2/4] NFC: trf7970a: add TI recommended write of zero to Register 0x18

Message ID 1461008921-15100-3-git-send-email-geoff@kuvee.com (mailing list archive)
State Accepted
Delegated to: Samuel Ortiz
Headers show

Commit Message

Geoff Lansberry April 18, 2016, 7:48 p.m. UTC 
Signed-off-by: Geoff Lansberry <geoff@kuvee.com>
---
 drivers/nfc/trf7970a.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c
index 2c3530a..447b6c9 100644
--- a/drivers/nfc/trf7970a.c
+++ b/drivers/nfc/trf7970a.c
@@ -1064,6 +1064,10 @@  static int trf7970a_init(struct trf7970a *trf)
 	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;