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From: Kirill Kapranov <kirill.kapranov@compulab.co.il>
To: a.zummo@towertech.it, alexandre.belloni@bootlin.com,
	phdm@macqel.be, linux-rtc@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: Kirill Kapranov <kirill.kapranov@compulab.co.il>
Subject: [PATCH 0/4] rtc:abx80x: Enable distributed digital calibration
Date: Mon, 29 Mar 2021 00:02:28 +0300	[thread overview]
Message-ID: <20210328210232.10395-1-kirill.kapranov@compulab.co.il> (raw)

This patch series enables a Distributed Digital Calibration function for
the RTC of the family. This feature allows to improve the RTC accuracy by
means of compensation an XT oscillator drift. To learn more, see:
AB08XX Series Ultra Low Power RTC IC User's Guide
https://abracon.com/realtimeclock/AB08XX-Application-Manual.pdf

The patches 1 and 2 enable SQW output, that is necessary for subsequent
measurement and computation. However, this feature may be enabled and used
independently, as is.

The patches 3 and 4 enable the XT calibration feature per se. The SQW
output must be enabled for usage of this feature.

TIA!
Kirill

Kirill Kapranov (4):
  dt-bindings: rtc: abracon,abx80x: Add sqw property
  rtc:abx80x: Enable SQW output
  dt-bindings: rtc: abracon,abx80x: Add xt-frequency property
  rtc:abx80x: Enable xt digital calibration

 .../devicetree/bindings/rtc/abracon,abx80x.txt |  25 ++
 drivers/rtc/rtc-abx80x.c                       | 252 +++++++++++++++++++++
 2 files changed, 277 insertions(+)

-- 
2.11.0


             reply	other threads:[~2021-03-28 21:30 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-28 21:02 Kirill Kapranov [this message]
2021-03-28 21:02 ` [PATCH 1/4] dt-bindings: rtc: abracon,abx80x: Add sqw property Kirill Kapranov
2021-03-28 21:02 ` [PATCH 2/4] rtc: abx80x: Enable SQW output Kirill Kapranov
2021-03-29  0:34   ` kernel test robot
2021-03-29  0:34     ` kernel test robot
2021-03-29  6:19   ` Dan Carpenter
2021-03-29  6:19     ` Dan Carpenter
2021-03-29  6:19     ` Dan Carpenter
2021-03-30 15:28     ` Kirill Kapranov
2021-03-30 15:28       ` Kirill Kapranov
2021-03-28 21:02 ` [PATCH 3/4] dt-bindings: rtc: abracon,abx80x: Add xt-frequency property Kirill Kapranov
2021-03-28 21:02 ` [PATCH 4/4] rtc:abx80x: Enable xt digital calibration Kirill Kapranov
2021-04-09 10:46   ` Pavel Machek
2021-04-09 16:56     ` Kirill Kapranov
2021-03-28 21:14 ` [PATCH 0/4] rtc:abx80x: Enable distributed " Alexandre Belloni

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