linux-kernel - [PATCH v2 0/3] Add settle time support to iio-mux

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Date:   Thu, 7 Oct 2021 15:46:38 +0200
From:   Vincent Whitchurch <vincent.whitchurch@...s.com>
To:     <peda@...ntia.se>, <jic23@...nel.org>, <devicetree@...r.kernel.org>
CC:     <kernel@...s.com>, <lars@...afoo.de>, <linux-iio@...r.kernel.org>,
        <robh+dt@...nel.org>, <linux-kernel@...r.kernel.org>,
        Vincent Whitchurch <vincent.whitchurch@...s.com>
Subject: [PATCH v2 0/3] Add settle time support to iio-mux

On one of our boards we use gpio-mux with iio-mux to read voltages using an ADC
from a few different channels, and on this board the input voltage needs some
time to stabilize after a switch of the mux.

This series add devicetree and driver support for this kind of hardware which
requries a settle time after muxing.

v1 -> v2:
- Move property support to iio-mux and delay handling to mux core as suggested
  by Peter.

v1: https://lore.kernel.org/all/20211004153640.20650-1-vincent.whitchurch@axis.com/

Vincent Whitchurch (3):
  mux: add support for delay after muxing
  dt-bindings: iio: io-channel-mux: Add property for settle time
  iio: multiplexer: iio-mux: Support settle-time-us property

 .../iio/multiplexer/io-channel-mux.yaml       |  5 +++
 drivers/iio/multiplexer/iio-mux.c             |  7 +++-
 drivers/mux/core.c                            | 36 ++++++++++++++++---
 include/linux/mux/consumer.h                  | 23 +++++++++---
 include/linux/mux/driver.h                    |  4 +++
 5 files changed, 65 insertions(+), 10 deletions(-)

-- 
2.28.0