From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geoff Lansberry Subject: [PATCH v2] NFC: trf7970a: Correct register settings for 27MHz clock Date: Wed, 26 Apr 2017 21:41:48 -0400 Message-ID: <1493257308-32503-1-git-send-email-geoff@kuvee.com> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: linux-wireless@vger.kernel.org, sameo@linux.intel.com Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nfc@lists.01.org, devicetree@vger.kernel.org, mgreer@animalcreek.com, justin@kuvee.com, colin.king@canonical.com, wharms@bfs.de, Geoff Lansberry List-Id: devicetree@vger.kernel.org In prior commits the selected clock frequency does not propagate correctly to what is written the the TRF7970A_MODULATOR_SYS_CLK_CTRL register. Signed-off-by: Geoff Lansberry --- drivers/nfc/trf7970a.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c index 5f040e6..c278b0e 100644 --- a/drivers/nfc/trf7970a.c +++ b/drivers/nfc/trf7970a.c @@ -2079,6 +2079,13 @@ static int trf7970a_probe(struct spi_device *spi) return -EINVAL; } + if (clk_freq == TRF7970A_27MHZ_CLOCK_FREQUENCY) { + trf->modulator_sys_clk_ctrl = TRF7970A_MODULATOR_27MHZ; + dev_dbg(trf->dev, "trf7970a configured for 27MHz crystal\n"); + } else { + trf->modulator_sys_clk_ctrl = 0; + } + if (of_property_read_bool(np, "en2-rf-quirk")) trf->quirks |= TRF7970A_QUIRK_EN2_MUST_STAY_LOW; -- 2.7.4