[PATCH v3] NFC: trf7970a: Correct register settings for 27MHz clock

From	Geoff Lansberry <geoff@kuvee.com>
Newsgroups	linux.kernel
Subject	[PATCH v3] NFC: trf7970a: Correct register settings for 27MHz clock
Date	2017-04-27 16:50 +0200
Message-ID	<tASU2-1Wr-17@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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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 <geoff@kuvee.com>
---
 drivers/nfc/trf7970a.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c
index 6ed5d7e..f7fee7d 100644
--- a/drivers/nfc/trf7970a.c
+++ b/drivers/nfc/trf7970a.c
@@ -2067,6 +2067,13 @@ 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;
+	}
+
 	ret = devm_request_threaded_irq(trf->dev, spi->irq, NULL,
 					trf7970a_irq,
 					IRQF_TRIGGER_RISING | IRQF_ONESHOT,
-- 
2.7.4

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[PATCH v3] NFC: trf7970a: Correct register settings for 27MHz clock Geoff Lansberry <geoff@kuvee.com> - 2017-04-27 16:50 +0200
  Re: [PATCH v3] NFC: trf7970a: Correct register settings for 27MHz  clock Mark Greer <mgreer@animalcreek.com> - 2017-04-27 19:20 +0200

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