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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>
This commit is contained in:
Geoff Lansberry 2017-04-27 17:28:46 -04:00 committed by Samuel Ortiz
parent f6a5885fc4
commit bd751808f9
1 changed files with 7 additions and 0 deletions
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7
drivers/nfc/trf7970a.c
View File

@ -2049,6 +2049,13 @@ static int trf7970a_probe(struct spi_device *spi)
return -EINVAL; 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, ret = devm_request_threaded_irq(trf->dev, spi->irq, NULL,
trf7970a_irq, trf7970a_irq,
IRQF_TRIGGER_RISING | IRQF_ONESHOT, IRQF_TRIGGER_RISING | IRQF_ONESHOT,