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| Started by | Geoff Lansberry <geoff@kuvee.com> |
|---|---|
| First post | 2017-04-27 23:30 +0200 |
| Last post | 2017-04-28 02:30 +0200 |
| Articles | 2 — 2 participants |
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[PATCH v4] NFC: trf7970a: Correct register settings for 27MHz clock Geoff Lansberry <geoff@kuvee.com> - 2017-04-27 23:30 +0200
Re: [PATCH v4] NFC: trf7970a: Correct register settings for 27MHz clock Mark Greer <mgreer@animalcreek.com> - 2017-04-28 02:30 +0200
| From | Geoff Lansberry <geoff@kuvee.com> |
|---|---|
| Date | 2017-04-27 23:30 +0200 |
| Subject | [PATCH v4] NFC: trf7970a: Correct register settings for 27MHz clock |
| Message-ID | <tAZ98-6n5-15@gated-at.bofh.it> |
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>
---
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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| From | Mark Greer <mgreer@animalcreek.com> |
|---|---|
| Date | 2017-04-28 02:30 +0200 |
| Subject | Re: [PATCH v4] NFC: trf7970a: Correct register settings for 27MHz clock |
| Message-ID | <tB1Xk-8eA-11@gated-at.bofh.it> |
| In reply to | #1632380 |
On Thu, Apr 27, 2017 at 05:28:46PM -0400, Geoff Lansberry wrote: > 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>
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