From: Geoff Lansberry <geoff@kuvee.com>
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 <geoff@kuvee.com>
Subject: [PATCH v2] NFC: trf7970a: Correct register settings for 27MHz clock
Date: Wed, 26 Apr 2017 21:41:48 -0400 [thread overview]
Message-ID: <1493257308-32503-1-git-send-email-geoff@kuvee.com> (raw)
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 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
next reply other threads:[~2017-04-27 1:41 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-27 1:41 Geoff Lansberry [this message]
[not found] ` <1493257308-32503-1-git-send-email-geoff-R+k406RtEhcAvxtiuMwx3w@public.gmane.org>
2017-04-27 4:02 ` [PATCH v2] NFC: trf7970a: Correct register settings for 27MHz clock Mark Greer
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