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authorGeoff Lansberry <geoff@kuvee.com>2017-04-27 17:28:46 -0400
committerSamuel Ortiz <sameo@linux.intel.com>2017-06-28 09:16:54 +0200
commitbd751808f9ff5e1822c627f6c4283009e66b2e53 (patch)
treead4118b5f810b8e7b0ed436c302d5b6a5d3ebaa5 /drivers/nfc
parentf6a5885fc4d68e7f25ffb42b9d8d80aebb3bacbb (diff)
NFC: trf7970a: Correct register settings for 27MHz clock
In prior commits the selected clock frequency does not propagate correctly to what is written to the TRF7970A_MODULATOR_SYS_CLK_CTRL register. Signed-off-by: Geoff Lansberry <geoff@kuvee.com> Acked-by: Mark Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/nfc')
-rw-r--r--drivers/nfc/trf7970a.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c
index 6ee7b038823d..eee5cc1a9220 100644
--- a/drivers/nfc/trf7970a.c
+++ b/drivers/nfc/trf7970a.c
@@ -2049,6 +2049,13 @@ 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,

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