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I wonder is there some information in here that is not readily available in the device datasheet? After all, isn't idea with this file to document peculiarities that are not easily found elsewhere? Thanks, Tomas > > Signed-off-by: Marcelo Schmitt > --- > No changes from v2 to v3. > > Documentation/iio/ad4134.rst | 58 ++++++++++++++++++++++++++++++++++++ > Documentation/iio/index.rst | 1 + > MAINTAINERS | 1 + > 3 files changed, 60 insertions(+) > create mode 100644 Documentation/iio/ad4134.rst > > diff --git a/Documentation/iio/ad4134.rst b/Documentation/iio/ad4134.rst > new file mode 100644 > index 000000000000..fa44a05e6793 > --- /dev/null > +++ b/Documentation/iio/ad4134.rst > @@ -0,0 +1,58 @@ > +.. SPDX-License-Identifier: GPL-2.0-only > + > +============= > +AD4134 driver > +============= > + > +Device driver for Analog Devices Inc. AD4134 and similar ADCs. > + > +Supported devices > +================= > + > +* `AD4134 `_ > +* `AD7134 `_ > + > +Wiring connections > +------------------ > + > +AD4134 and similar ADCs can operate in a few different wiring configurations. > + > +Minimum I/O mode (SPI control mode) > +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > + > +The minimum I/O mode wiring allows AD4134 register and data access with the > +conventional set of SPI bus lines. The hardware configuration settings for using > +AD4134 in minimum I/O mode are: > + > ++----------------------------+----------------------+--------------------+ > +| Pin Function | Level | Description | > ++============================+======================+====================+ > +| PIN/SPI | High | SPI control mode | > ++----------------------------+----------------------+--------------------+ > +| MODE | Low | ASRC slave mode | > ++----------------------------+----------------------+--------------------+ > +| DCLKIO | Low | DCLK input | > ++----------------------------+----------------------+--------------------+ > +| DCLKMODE | Low | Gated DCLK | > ++----------------------------+----------------------+--------------------+ > + > +A possible connection schema that sets AD4134 digital interface for minimum I/O > +mode is: > + > +:: > + > + IOVDD > + +------------------------+ | > + | PIN/SPI |<--+ +-------------+ > + | | | HOST | > + | DCLK |<--+ | | > + | FORMAT1/SCLK |<--+---- | SCLK | > + | AD4134 DEC2/SDI |<--------| SDO | > + | DEC3/SDO |-------->| SDI | > + | ODR |<--------| GPIO | > + | FORMAT0/CS |<--+ | | > + | MODE |<--+ +-------------+ > + | DEC0/DCLKIO |<--+ > + | DEC1/DCLKMODE |<--+ > + +------------------------+ | > + GND > diff --git a/Documentation/iio/index.rst b/Documentation/iio/index.rst > index 315ae37d6fd4..d4ed782c93a6 100644 > --- a/Documentation/iio/index.rst > +++ b/Documentation/iio/index.rst > @@ -22,6 +22,7 @@ Industrial I/O Kernel Drivers > ad3552r > ad4000 > ad4030 > + ad4134 > ad4695 > ad7191 > ad7380 > diff --git a/MAINTAINERS b/MAINTAINERS > index a1541cf3967b..b2c101598636 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -1455,6 +1455,7 @@ L: linux-iio@vger.kernel.org > S: Supported > W: https://ez.analog.com/linux-software-drivers > F: Documentation/devicetree/bindings/iio/adc/adi,ad4134.yaml > +F: Documentation/iio/ad4134.rst > F: drivers/iio/adc/ad4134.c > > ANALOG DEVICES INC AD4170-4 DRIVER