From 4e007f810664541078e619d050f6290bf137aa61 Mon Sep 17 00:00:00 2001 From: "Mark A. Greer" Date: Tue, 2 Sep 2014 15:12:38 -0700 Subject: [PATCH] NFC: trf7970a: Delay after initialization The trf7970a should be given at least 1 ms to completely initialize after the 'Software Init' and 'Idle' commands have been issued. Signed-off-by: Mark A. Greer Signed-off-by: Samuel Ortiz --- drivers/nfc/trf7970a.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c index 3859e02c4e2d..b2d0fbf70073 100644 --- a/drivers/nfc/trf7970a.c +++ b/drivers/nfc/trf7970a.c @@ -824,6 +824,8 @@ static int trf7970a_init(struct trf7970a *trf) if (ret) goto err_out; + usleep_range(1000, 2000); + ret = trf7970a_write(trf, TRF7970A_MODULATOR_SYS_CLK_CTRL, 0); if (ret) goto err_out; -- 2.39.5