From b887eb09d3cbda145d9fff4b9a56c384edd07ed7 Mon Sep 17 00:00:00 2001
From: "Mark A. Greer" <mgreer@animalcreek.com>
Date: Tue, 25 Mar 2014 08:54:31 -0700
Subject: [PATCH] NFC: trf7970a: Clear 'NFC Target Detection Level' register

Due to a trf7970a erratum, the 'NFC Target Detection Level' register
(0x18) must be cleared after power-up.

Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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