Commit Graph

635 Commits

Author SHA1 Message Date
Nick Xie
ab8293caad dt-bindings: iio: adc: amlogic,meson-saradc: add S4 compatible
Add the compatible string for the SARADC (Successive Approximation
Register ADC) IP block found in the Amlogic Meson S4 SoC.

There are no known differences between the SARADC on S4 and the one
on G12A. Therefore, it uses "amlogic,meson-g12a-saradc" as a proper
specific fallback.

Also add a comment indicating that "amlogic,meson-saradc" must not be
used for new devices. It's a made up compatible string that does not
correspond to a specific hardware generation and is not used to match
any driver. For old devices we keep it as it's part of the ABI.

Signed-off-by: Nick Xie <nick@khadas.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2026-03-26 19:56:43 +00:00
Kyle Hsieh
732df35bbb dt-bindings: adc: ltc2497: add support for ltc2305
Add documentation for the 2-channel LTC2305 ADC in the
existing ltc2497 binding.
This enables automatic device tree matching for LTC2305
while using the LTC2309 driver (drivers/iio/adc/ltc2309.c),
since both ADCs share the same I2C interface and 12-bit SAR architecture.
The main difference is the number of channels (LTC2305: 2, LTC2309: 8).

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Kyle Hsieh <kylehsieh1995@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2026-03-25 19:48:45 +00:00
Svyatoslav Ryhel
dd31b649ef dt-bindings: iio: adc: cpcap-adc: document Mot ADC
Add compatible for ADC used in Mot board. Separate compatible is required
since ADC in the Mot board uses a unique set of configurations.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2026-03-03 21:20:03 +00:00
Marcelo Schmitt
addb98c43b dt-bindings: iio: adc: adi,ad4030: Add ADAQ4216 and ADAQ4224
ADAQ4216 and ADAQ4224 are similar to AD4030 except that ADAQ devices have a
PGA (programmable gain amplifier) that scales the input signal prior to it
reaching the ADC inputs. The PGA is controlled through a couple of pins (A0
and A1) that set one of four possible signal gain configurations.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2026-03-01 12:04:44 +00:00
Marcelo Schmitt
5e0d71dc04 dt-bindings: iio: adc: adi,ad4030: Add PWM
In setups designed for high speed data rate capture, a PWM is used to
generate the CNV signal that issues data captures from the ADC. Document
the use of a PWM for AD4030 and similar devices.

Reviewed-by: David Lechner <dlechner@baylibre.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2026-03-01 12:04:44 +00:00
Jonathan Cameron
c99ccbba91 Merge branch 'ib-iio-thermal-qcom-pmic5' into togreg
Immutable branch to allow this base work to be merged into thermal.
2026-02-23 21:03:25 +00:00
Jishnu Prakash
1c1b853eef dt-bindings: iio: adc: Add support for QCOM PMIC5 Gen3 ADC
For the PMIC5-Gen3 type PMICs, ADC peripheral is present in HW for the
following PMICs: PMK8550, PM8550, PM8550B and PM8550VX PMICs.

It is similar to PMIC5-Gen2, with SW communication to ADCs on all PMICs
going through PBS(Programmable Boot Sequence) firmware through a single
register interface. This interface is implemented on SDAM (Shared
Direct Access Memory) peripherals on the master PMIC PMK8550 rather
than a dedicated ADC peripheral.

Add documentation for PMIC5 Gen3 ADC and update SPMI PMIC bindings to
allow ADC5 Gen3 as adc@ subnode.

Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Jishnu Prakash <jishnu.prakash@oss.qualcomm.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2026-02-23 20:23:32 +00:00
Jishnu Prakash
9f3a352e9f dt-bindings: iio: adc: Split out QCOM VADC channel properties
Split out the common channel properties for QCOM VADC devices into a
separate file so that it can be included as a reference for devices
using them. This will be needed for the upcoming ADC5 Gen3 binding
support patch, as ADC5 Gen3 also uses all of these common properties.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Jishnu Prakash <jishnu.prakash@oss.qualcomm.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2026-02-23 20:23:32 +00:00
Antoniu Miclaus
6cfb965afe dt-bindings: iio: adc: adi,ad4080: add support for AD4082, AD4085 and AD4088
Add device tree binding support for AD4082, AD4085 and AD4088 SAR ADCs.
Add adi,ad4082, adi,ad4085 and adi,ad4088 to the compatible enum.

A fallback compatible string is not appropriate for these devices as they
differ in LVDS CNV clock count maximum from their base variants:
  - AD4082 (20-bit) vs AD4080: lvds_cnv_clk_cnt_max 8 vs 7
  - AD4085 (16-bit) vs AD4084: lvds_cnv_clk_cnt_max 8 vs 2
  - AD4088 (14-bit) vs AD4087: lvds_cnv_clk_cnt_max 8 vs 1

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2026-02-23 08:24:24 +00:00
Marcelo Schmitt
3477334682 dt-bindings: iio: adc: adi,ad4030: Reference spi-peripheral-props
AD4030 and similar devices all connect to the system as SPI peripherals.
Reference spi-peripheral-props so common SPI peripheral can be used from
ad4030 dt-binding.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2026-02-23 08:24:24 +00:00
David Lechner
63670c90f0 dt-bindings: iio: adc: adi,ad7380: add spi-rx-bus-width property
Add spi-rx-bus-width property to describe how many SDO lines are wired
up on the ADC. These chips are simultaneous sampling ADCs and have one
SDO line per channel, either 2 or 4 total depending on the part number.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2026-02-23 08:24:23 +00:00
Linus Torvalds
505d195b0f Char/Misc/IIO driver changes for 7.0-rc1
Here is the big set of char/misc/iio and other smaller driver subsystem
 changes for 7.0-rc1.  Lots of little things in here, including:
   - Loads of iio driver changes and updates and additions
   - gpib driver updates
   - interconnect driver updates
   - i3c driver updates
   - hwtracing (coresight and intel) driver updates
   - deletion of the obsolete mwave driver
   - binder driver updates (rust and c versions)
   - mhi driver updates (causing a merge conflict, see below)
   - mei driver updates
   - fsi driver updates
   - eeprom driver updates
   - lots of other small char and misc driver updates and cleanups
 
 All of these have been in linux-next for a while, with no reported
 issues except for a merge conflict with your tree due to the mhi driver
 changes in the drivers/net/wireless/ath/ath12k/mhi.c file.  To fix that
 up, just delete the "auto_queue" structure fields being set, see this
 message for the full change needed:
 	https://lore.kernel.org/r/aXD6X23btw8s-RZP@sirena.org.uk
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc/IIO driver updates from Greg KH:
 "Here is the big set of char/misc/iio and other smaller driver
  subsystem changes for 7.0-rc1. Lots of little things in here,
  including:

   - Loads of iio driver changes and updates and additions

   - gpib driver updates

   - interconnect driver updates

   - i3c driver updates

   - hwtracing (coresight and intel) driver updates

   - deletion of the obsolete mwave driver

   - binder driver updates (rust and c versions)

   - mhi driver updates (causing a merge conflict, see below)

   - mei driver updates

   - fsi driver updates

   - eeprom driver updates

   - lots of other small char and misc driver updates and cleanups

  All of these have been in linux-next for a while, with no reported
  issues"

* tag 'char-misc-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (297 commits)
  mux: mmio: fix regmap leak on probe failure
  rust_binder: return p from rust_binder_transaction_target_node()
  drivers: android: binder: Update ARef imports from sync::aref
  rust_binder: fix needless borrow in context.rs
  iio: magn: mmc5633: Fix Kconfig for combination of I3C as module and driver builtin
  iio: sca3000: Fix a resource leak in sca3000_probe()
  iio: proximity: rfd77402: Add interrupt handling support
  iio: proximity: rfd77402: Document device private data structure
  iio: proximity: rfd77402: Use devm-managed mutex initialization
  iio: proximity: rfd77402: Use kernel helper for result polling
  iio: proximity: rfd77402: Align polling timeout with datasheet
  iio: cros_ec: Allow enabling/disabling calibration mode
  iio: frequency: ad9523: correct kernel-doc bad line warning
  iio: buffer: buffer_impl.h: fix kernel-doc warnings
  iio: gyro: itg3200: Fix unchecked return value in read_raw
  MAINTAINERS: add entry for ADE9000 driver
  iio: accel: sca3000: remove unused last_timestamp field
  iio: accel: adxl372: remove unused int2_bitmask field
  iio: adc: ad7766: Use iio_trigger_generic_data_rdy_poll()
  iio: magnetometer: Remove IRQF_ONESHOT
  ...
2026-02-17 09:11:04 -08:00
Mark Brown
8ea39d960c
spi: add multi-lane support
Merge series from David Lechner <dlechner@baylibre.com>:

This series is adding support for SPI controllers and peripherals that
have multiple SPI data lanes (data lanes being independent sets of
SDI/SDO lines, each with their own serializer/deserializer).

This series covers this specific use case:

+--------------+    +---------+
| SPI          |    | SPI     |
| Controller   |    | ADC     |
|              |    |         |
|          CS0 |--->| CS      |
|         SCLK |--->| SCLK    |
|          SDO |--->| SDI     |
|         SDI0 |<---| SDOA    |
|         SDI1 |<---| SDOB    |
|         SDI2 |<---| SDOC    |
|         SDI3 |<---| SDOD    |
+--------------+     +--------+

The ADC is a simultaneous sampling ADC that can convert 4 samples at the
same time. It has 4 data output lines (SDOA-D) that each contain the
data of one of the 4 channels. So it requires a SPI controller with 4
separate deserializers in order to receive all of the information at the
same time.

This should also work for the use case in [1] as well. (Some of the
patches in this series were already submitted there). In that case the
SPI controller is used kind of like it is two separate SPI controllers,
each with its own chip select, clock, and data lines.

[1]: https://lore.kernel.org/linux-spi/20250616220054.3968946-1-sean.anderson@linux.dev/

The DT bindings are a fairly straight-forward mapping of which pins on
the peripheral are connected to which pins on the controller. The SPI
core code parses this and makes the information available to drivers.
When a peripheral driver sees that multiple data lanes are wired up, it
can chose to use them when sending messages.

The SPI message API is a bit higher-level than just specifying the
number of data lines for a SPI transfer though. I did some research on
other SPI controllers that have this feature. They tend to be the kind
meant for connecting to two flash memory chips at the same time but can
be used more generically as well. They generally have the option to
either use one lane at a time (Sean's use case), or can mirror the same
data on multiple lanes (no users of this yet) or can perform striping
of a single data FIFO/DMA stream to/from the two lanes (our use case).

For now, the API assumes that if you want to do mirror/striping, then
you want to use all available data lanes. Otherwise, it just uses the
first data lane for "normal" SPI transfers.
2026-02-02 22:03:20 +00:00
Greg Kroah-Hartman
9991bbc6d5 IIO: New device support, features and cleanup for the 6.20/7.0 cycle.
Slightly messier than normal unfortunately due to some conflicts
 and build config bugs related to I3C drivers.
 
 One last minute Kconfig fix right at the top after a linux-next report.
 I've simplified the Kconfig and made it match other instances in the kernel
 so that should be safe enough despite short soak time in front of build bots.
 
 Merge of an immutable branch from I3C to get some stubs that were missing
 and caused build issues with dual I2C / I3C drivers. This also brought in a
 drop of some deprecated interfaces so there is also one patch to update a
 new driver to not use those.
 
 We are having another go at using cleanup.h magic with the IIO mode claim
 functions after backing out last try at this. This time we have wrappers
 around the new ACQUIRE() and ACQUIRE_ERR() macros.
 Having been burnt once, we will be taking it a bit more slowly this time
 wrt to wide adoption of these! Thanks in particular to Kurt for taking
 on this core IIO work.
 
 New Device Support
 ==================
 
 adi,ad18113
 - New driver to support the AD18113 amplifier - an interesting device due
   to the external bypass paths where we need to describe what gain those
   paths have in DT. Longer term it will be interesting to see if this
   simplistic description is enough for real deployments.
 adi,ad4062
 - New driver for the AD4060 and AD4052 SAR ADCs including trigger, event
   and GPIO controller support.  Follow up patch replaced use of some
   deprecated I3C interfaces prior to the I3C immutable branch merge as
   that includes dropping them.
 adi,ad4134
 - New driver for the AD4134 24bit 4 channel simultaneous sampling ADC.
 adi,ad7768-1,
 - Add support for the ADAQ767-1, ADAQ7768-1 and ADAQ7769-1 ADCs after some
   rework to enable the driver to support multiple device types.
 adi,ad9467
 - Add support for the similar ad9211 ADC to this existing driver.
 - Make the selection of 2s comp mode explicit for normal operation and
   switch to offset binary when entering calibration mode.
 honeywell,abp2
 - New driver to support this huge family (100+) of board mount pressure and
   temperature sensors.
 maxim,max22007
 - New drier for this 4 channel DAC.
 memsic,mmc5633
 - New driver for this I2C/I3C magnetometer. Follow on patches fixed up
   issues related to single driver supporting both bus types.
 microchip,mcp747feb02
 - New driver for the Microchip MCP47F(E/V)B(0/1/2)1,
   MCP47F(E/V)B(0/1/2)2, MCP47F(E/V)B(0/1/2)4 and MCP47F(E/V)B(0/1/2)8
   buffered voltage output DACs.
 nxp,sar-adc
 - New driver support ADCs found on s32g2 and s32g3 platforms.
 ti,ads1018
 - New drier for the ADS1018 and ADS1118 SPI ADCs.
 ti,ads131m02
 - New driver supporting ADS131M(02/03/04/06/08)24-bit simultaneous sampling
   ADCs.
 
 Features
 ========
 
 iio-core
 - New IIO_DEV_ACQUIRE_DIRECT_MODE() / IIO_DEV_ACQUIRE_FAILED() +
   equivalents for the much rarer case where the mode needs pinning
   whether or not it is in direct mode.  These use the ACQUIRE()
   / ACQUIRE_ERR() infrastructure underneath to provide both simple
   checks on whether we got the requested mode and to provide scope
   based release. Applied in a few initial drivers.
 adi,ad9467
 - Support calibbias control
 adi,adf4377
 - Add support to act as a clock provider.
 adi,adxl380
 - Support low power 1KHz sampling frequency mode. Required rework of
   how events and filters were configured, plus applying of constraints
   when in this mode.
 rf-digital,rfd77402
 - Add interrupt support as alternative to polling for completion.
 st,lsm6dsx
 - Tap event detection (after considerable driver rework)
 
 Cleanup and Minor Fixes
 =======================
 
 More minor cleanup such as typos, white space etc not called out except
 where they were applied to a lot of drivers.
 
 Various drivers.
 - Use of dev_err_probe() to cleanup error handling.
 - Introduce local struct device and struct device_node variables to
   reduce duplication of getting them from containing structs.
 - Ensure uses of iio_trigger_generic_data_rdy_poll() set IRQF_NO_THREAD
   as that function calls non threaded child interrupt handlers.
 - Replace IRQF_ONESHOT in not thread interrupt handlers with
   IRQF_NO_THREAD to ensure they run as intended. Drop one unnecessary case.
 iio-sw-device/trigger.
 - Constify configs_group_operations structures.
 iio-buffer-dma / buffer-dma-engine
 - Use lockdep_assert_held() to replace WARN_ON() to check lock is
   correctly held.
 - Make use of cleanup.h magic to simplify various code paths.
 - Make iio_dma_buffer_init() return void rather than always success.
 
 adi,ad7766
 - Replace custom interrupt handler with iio_trigger_generic_data_rdy_poll()
 adi,ad9832
 - Drop legacy platform_data support.
 adi,ade9000
 - Add a maintainer entry.
 adi,adt7316
 - Move to EXPORT_GPL_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() so the compiler
   can cleanly drop unused pm structures and callbacks.
 adi,adxl345
 - Relax build constraint vs the driver that is in input so both may be
   built as modules and selection made at runtime.
 adi,adxl380
 - Make sure we don't read tail entries in the hardware fifo if a partial
   new scan has been written.
 - Move to a single larger regmap_noinc_read() to read the hardware fifo.
 aspeed,ast2600
 - Add missing interrupts property to DT binding.
 bosch,bmi270_i2c
 - Add missing MODULE_DEVICE_TABLE() macros so auto probing of modules can
   work.
 bosch,smi330
 - Drop duplicate assignment of IIO_TYPE in smi330_read_avail()
 - Use new common field_get() and field_prep() helpers to replace local
   version.
 honeywell,mprls0025pa
   Fixes delayed to merge window as late in cycle and we didn't want to delay
   the rest of the series.
 - Allow Kconfig selection of specific bus sub-drivers rather than tying that
   to the buses themselves being supported.
 - Zero spi_transfer structure to avoid chance of unintentionally set fields
   effecting transfer.
 - Fix a potential timing violation wrt to the chip select to first clock
   edge timing.
 - As recent driver, take risk inherent in dropping interrupt direction from
   driver as that should be set by firmware.
 - Fix wrong reported number of data bits for channel.
 - Fix a pressure channel calculation bug.
 - Rework to allow embedding the tx buffer in the iio_priv() structure rather
   than requiring separate allocation.
 - Move the buffer clearing to the shared core bringing it into affect for
   SPI as well as I2C.
 - Stricter checks for status byte.
 - Greatly simplify the measurement sequence.
 - Add a copyright entry to reflect Petre's continued work on this driver.
 intersil,isl29018
 - Switch from spritnf to sysfs_emit_at() to make it clear overflow can't
   occur.
 invensense,icm42600
 - Allow sysfs access to temperature when buffered capture in use as it
   does not impact other sensor data paths.
 invensense,itg3200
 - Check unused return value in read_raw() callback.
 men,z188
 - Drop now duplicated module alias.
 rf-digital,rfd77402
 - Add DT binding doc and explicit of_device_id table.
 - Poll for timeout with times as on datasheet, then replace opencoded
   version with read_poll_timeout().
 sensiron,scd4x
 - Add missing timestamp channel. The code to push it to the buffer was there
   but there was no way to turn it on.
 vti,sca3000
 - Fix resource leak if iio_device_register() fails.
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Merge tag 'iio-for-7.0a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

IIO: New device support, features and cleanup for the 6.20/7.0 cycle.

Slightly messier than normal unfortunately due to some conflicts
and build config bugs related to I3C drivers.

One last minute Kconfig fix right at the top after a linux-next report.
I've simplified the Kconfig and made it match other instances in the kernel
so that should be safe enough despite short soak time in front of build bots.

Merge of an immutable branch from I3C to get some stubs that were missing
and caused build issues with dual I2C / I3C drivers. This also brought in a
drop of some deprecated interfaces so there is also one patch to update a
new driver to not use those.

We are having another go at using cleanup.h magic with the IIO mode claim
functions after backing out last try at this. This time we have wrappers
around the new ACQUIRE() and ACQUIRE_ERR() macros.
Having been burnt once, we will be taking it a bit more slowly this time
wrt to wide adoption of these! Thanks in particular to Kurt for taking
on this core IIO work.

New Device Support
==================

adi,ad18113
- New driver to support the AD18113 amplifier - an interesting device due
  to the external bypass paths where we need to describe what gain those
  paths have in DT. Longer term it will be interesting to see if this
  simplistic description is enough for real deployments.
adi,ad4062
- New driver for the AD4060 and AD4052 SAR ADCs including trigger, event
  and GPIO controller support.  Follow up patch replaced use of some
  deprecated I3C interfaces prior to the I3C immutable branch merge as
  that includes dropping them.
adi,ad4134
- New driver for the AD4134 24bit 4 channel simultaneous sampling ADC.
adi,ad7768-1,
- Add support for the ADAQ767-1, ADAQ7768-1 and ADAQ7769-1 ADCs after some
  rework to enable the driver to support multiple device types.
adi,ad9467
- Add support for the similar ad9211 ADC to this existing driver.
- Make the selection of 2s comp mode explicit for normal operation and
  switch to offset binary when entering calibration mode.
honeywell,abp2
- New driver to support this huge family (100+) of board mount pressure and
  temperature sensors.
maxim,max22007
- New drier for this 4 channel DAC.
memsic,mmc5633
- New driver for this I2C/I3C magnetometer. Follow on patches fixed up
  issues related to single driver supporting both bus types.
microchip,mcp747feb02
- New driver for the Microchip MCP47F(E/V)B(0/1/2)1,
  MCP47F(E/V)B(0/1/2)2, MCP47F(E/V)B(0/1/2)4 and MCP47F(E/V)B(0/1/2)8
  buffered voltage output DACs.
nxp,sar-adc
- New driver support ADCs found on s32g2 and s32g3 platforms.
ti,ads1018
- New drier for the ADS1018 and ADS1118 SPI ADCs.
ti,ads131m02
- New driver supporting ADS131M(02/03/04/06/08)24-bit simultaneous sampling
  ADCs.

Features
========

iio-core
- New IIO_DEV_ACQUIRE_DIRECT_MODE() / IIO_DEV_ACQUIRE_FAILED() +
  equivalents for the much rarer case where the mode needs pinning
  whether or not it is in direct mode.  These use the ACQUIRE()
  / ACQUIRE_ERR() infrastructure underneath to provide both simple
  checks on whether we got the requested mode and to provide scope
  based release. Applied in a few initial drivers.
adi,ad9467
- Support calibbias control
adi,adf4377
- Add support to act as a clock provider.
adi,adxl380
- Support low power 1KHz sampling frequency mode. Required rework of
  how events and filters were configured, plus applying of constraints
  when in this mode.
rf-digital,rfd77402
- Add interrupt support as alternative to polling for completion.
st,lsm6dsx
- Tap event detection (after considerable driver rework)

Cleanup and Minor Fixes
=======================

More minor cleanup such as typos, white space etc not called out except
where they were applied to a lot of drivers.

Various drivers.
- Use of dev_err_probe() to cleanup error handling.
- Introduce local struct device and struct device_node variables to
  reduce duplication of getting them from containing structs.
- Ensure uses of iio_trigger_generic_data_rdy_poll() set IRQF_NO_THREAD
  as that function calls non threaded child interrupt handlers.
- Replace IRQF_ONESHOT in not thread interrupt handlers with
  IRQF_NO_THREAD to ensure they run as intended. Drop one unnecessary case.
iio-sw-device/trigger.
- Constify configs_group_operations structures.
iio-buffer-dma / buffer-dma-engine
- Use lockdep_assert_held() to replace WARN_ON() to check lock is
  correctly held.
- Make use of cleanup.h magic to simplify various code paths.
- Make iio_dma_buffer_init() return void rather than always success.

adi,ad7766
- Replace custom interrupt handler with iio_trigger_generic_data_rdy_poll()
adi,ad9832
- Drop legacy platform_data support.
adi,ade9000
- Add a maintainer entry.
adi,adt7316
- Move to EXPORT_GPL_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() so the compiler
  can cleanly drop unused pm structures and callbacks.
adi,adxl345
- Relax build constraint vs the driver that is in input so both may be
  built as modules and selection made at runtime.
adi,adxl380
- Make sure we don't read tail entries in the hardware fifo if a partial
  new scan has been written.
- Move to a single larger regmap_noinc_read() to read the hardware fifo.
aspeed,ast2600
- Add missing interrupts property to DT binding.
bosch,bmi270_i2c
- Add missing MODULE_DEVICE_TABLE() macros so auto probing of modules can
  work.
bosch,smi330
- Drop duplicate assignment of IIO_TYPE in smi330_read_avail()
- Use new common field_get() and field_prep() helpers to replace local
  version.
honeywell,mprls0025pa
  Fixes delayed to merge window as late in cycle and we didn't want to delay
  the rest of the series.
- Allow Kconfig selection of specific bus sub-drivers rather than tying that
  to the buses themselves being supported.
- Zero spi_transfer structure to avoid chance of unintentionally set fields
  effecting transfer.
- Fix a potential timing violation wrt to the chip select to first clock
  edge timing.
- As recent driver, take risk inherent in dropping interrupt direction from
  driver as that should be set by firmware.
- Fix wrong reported number of data bits for channel.
- Fix a pressure channel calculation bug.
- Rework to allow embedding the tx buffer in the iio_priv() structure rather
  than requiring separate allocation.
- Move the buffer clearing to the shared core bringing it into affect for
  SPI as well as I2C.
- Stricter checks for status byte.
- Greatly simplify the measurement sequence.
- Add a copyright entry to reflect Petre's continued work on this driver.
intersil,isl29018
- Switch from spritnf to sysfs_emit_at() to make it clear overflow can't
  occur.
invensense,icm42600
- Allow sysfs access to temperature when buffered capture in use as it
  does not impact other sensor data paths.
invensense,itg3200
- Check unused return value in read_raw() callback.
men,z188
- Drop now duplicated module alias.
rf-digital,rfd77402
- Add DT binding doc and explicit of_device_id table.
- Poll for timeout with times as on datasheet, then replace opencoded
  version with read_poll_timeout().
sensiron,scd4x
- Add missing timestamp channel. The code to push it to the buffer was there
  but there was no way to turn it on.
vti,sca3000
- Fix resource leak if iio_device_register() fails.

* tag 'iio-for-7.0a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (144 commits)
  iio: magn: mmc5633: Fix Kconfig for combination of I3C as module and driver builtin
  iio: sca3000: Fix a resource leak in sca3000_probe()
  iio: proximity: rfd77402: Add interrupt handling support
  iio: proximity: rfd77402: Document device private data structure
  iio: proximity: rfd77402: Use devm-managed mutex initialization
  iio: proximity: rfd77402: Use kernel helper for result polling
  iio: proximity: rfd77402: Align polling timeout with datasheet
  iio: cros_ec: Allow enabling/disabling calibration mode
  iio: frequency: ad9523: correct kernel-doc bad line warning
  iio: buffer: buffer_impl.h: fix kernel-doc warnings
  iio: gyro: itg3200: Fix unchecked return value in read_raw
  MAINTAINERS: add entry for ADE9000 driver
  iio: accel: sca3000: remove unused last_timestamp field
  iio: accel: adxl372: remove unused int2_bitmask field
  iio: adc: ad7766: Use iio_trigger_generic_data_rdy_poll()
  iio: magnetometer: Remove IRQF_ONESHOT
  iio: Replace IRQF_ONESHOT with IRQF_NO_THREAD
  iio: Use IRQF_NO_THREAD
  iio: dac: Add MAX22007 DAC driver support
  dt-bindings: iio: dac: Add max22007
  ...
2026-02-02 17:08:30 +01:00
David Lechner
37bb4033e4
spi: dt-bindings: change spi-{rx,tx}-bus-width to arrays
Change spi-rx-bus-width and spi-tx-bus-width properties from single
uint32 values to arrays of uint32 values. This allows describing SPI
peripherals connected to controllers that have multiple data lanes for
receiving or transmitting two or more words in parallel.

Each index in the array corresponds to a physical data lane (one or more
wires depending on the bus width). Additional mapping properties will be
needed in cases where a lane on the controller or peripheral is skipped.

Bindings that make use of this property are updated in the same commit
to avoid validation errors.

The adi,ad4030 binding can now better describe the chips multi-lane
capabilities, so that binding is refined and gets a new example.

Converting from single uint32 to array of uint32 does not break .dts/
.dtb files since there is no difference between specifying a single
uint32 value and an array with a single uint32 value in devicetree.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20260123-spi-add-multi-bus-support-v6-1-12af183c06eb@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-02-02 12:12:41 +00:00
Jonathan Santos
2f55ae3a89 dt-bindings: iio: adc: ad7768-1: add new supported parts
Add compatibles for supported parts in the ad7768-1 family:
	ADAQ7767-1, ADAQ7768-1 and ADAQ7769-1

Add property and checks for AFF gain, supported by ADAQ7767-1
and ADAQ7769-1, and for PGA gain, supported by ADAQ7768-1
and ADAQ7769-1:
	adi,aaf-gain-bp
	pga-gpios

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Jonathan Santos <Jonathan.Santos@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2026-01-22 20:53:17 +00:00
Marcelo Schmitt
8b59bcf8d5 dt-bindings: iio: adc: Add AD4134
Add device tree documentation for AD4134 24-Bit, 4-channel simultaneous
sampling, precision ADC.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2026-01-11 13:29:32 +00:00
Jorge Marques
9e6c7656b9 dt-bindings: iio: adc: Add adi,ad4062
Add dt-bindings for AD4062 family, devices AD4060/AD4062, low-power with
monitor capabilities SAR ADCs. Each variant of the family differs in
resolution. The device contains two outputs (gp0, gp1). The outputs can
be configured for range of options, such as threshold and data ready.
The device uses a 2-wire I3C interface.

Signed-off-by: Jorge Marques <jorge.marques@analog.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-12-31 17:59:25 +00:00
Kurt Borja
43fabbb924 dt-bindings: iio: adc: Add TI ADS1018/ADS1118
Add documentation for Texas Instruments ADS1018 and ADS1118
analog-to-digital converters.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Kurt Borja <kuurtb@gmail.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-12-21 18:48:24 +00:00
Tomas Melin
34744a6ddf dt-bindings: adc: ad9467: add support for ad9211
This device has e.g. different scaling values than currently
listed devices.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Tomas Melin <tomas.melin@vaisala.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-12-21 11:41:13 +00:00
Andrew Jeffery
6fa9eb81f3 dt-bindings: iio: adc: Allow interrupts property for AST2600
The device has interrupts allocated according to the datasheet, and
the devicetree already defines the interrupt property. Address existing
warnings by allowing the property.

Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-12-21 11:41:13 +00:00
Daniel Lezcano
a19489ca82 dt-bindings: iio: adc: Add the NXP SAR ADC for s32g2/3 platforms
The s32g2 and s32g3 NXP platforms have two instances of a Successive
Approximation Register ADC. It supports the raw, trigger and scan
modes which involves the DMA. Add their descriptions.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-12-21 11:41:12 +00:00
Oleksij Rempel
1ca733e843 bindings: iio: adc: Add bindings for TI ADS131M0x ADCs
Add device tree bindings documentation for the Texas Instruments
ADS131M0x analog-to-digital converters. This family includes the ADS131M02,
ADS131M03, ADS131M04, ADS131M06, and ADS131M08 variants.

These variants differ primarily in the number of supported channels
(2, 3, 4, 6, and 8, respectively), which requires separate compatible
strings to validate the channel nodes.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-12-21 11:41:12 +00:00
Linus Walleij
54de247a0e dt-bindings: Updates Linus Walleij's mail address
My name is stamped into maintainership for a big slew of DT
bindings. Now that it is changing, switch it over to my
kernel.org mail address, which will hopefully be stable for the
rest of my life.

Signed-off-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20251216-maintainers-dt-v1-1-0b5ab102c9bb@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2025-12-16 10:17:59 -06:00
Linus Torvalds
83bd89291f Char/Misc/IIO driver updates for 6.19-rc1
Here is the big set of char/misc/iio driver updates for 6.19-rc1.  Lots
 of stuff in here including:
   - lots of IIO driver updates, cleanups, and additions.
   - large interconnect driver changes as they get converted over to a
     dynamic system of ids
   - coresight driver updates
   - mwave driver updates
   - binder driver updates and changes
   - comedi driver fixes now that the fuzzers are being set loose on them
   - nvmem driver updates
   - new uio driver addition
   - lots of other small char/misc driver updates, full details in the
     shortlog
 
 All of these have been in linux-next for a while now, with no reported
 issues other than a merge conflict with your tree that should be trivial
 to handle (take both sides).
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc/IIO driver updates from Greg KH:
 "Here is the big set of char/misc/iio driver updates for 6.19-rc1. Lots
  of stuff in here including:

   - lots of IIO driver updates, cleanups, and additions

   - large interconnect driver changes as they get converted over to a
     dynamic system of ids

   - coresight driver updates

   - mwave driver updates

   - binder driver updates and changes

   - comedi driver fixes now that the fuzzers are being set loose on
     them

   - nvmem driver updates

   - new uio driver addition

   - lots of other small char/misc driver updates, full details in the
     shortlog

  All of these have been in linux-next for a while now"

* tag 'char-misc-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (304 commits)
  char: applicom: fix NULL pointer dereference in ac_ioctl
  hangcheck-timer: fix coding style spacing
  hangcheck-timer: Replace %Ld with %lld
  hangcheck-timer: replace printk(KERN_CRIT) with pr_crit
  uio: Add SVA support for PCI devices via uio_pci_generic_sva.c
  dt-bindings: slimbus: fix warning from example
  intel_th: Fix error handling in intel_th_output_open
  misc: rp1: Fix an error handling path in rp1_probe()
  char: xillybus: add WQ_UNBOUND to alloc_workqueue users
  misc: bh1770glc: use pm_runtime_resume_and_get() in power_state_store
  misc: cb710: Fix a NULL vs IS_ERR() check in probe()
  mux: mmio: Add suspend and resume support
  virt: acrn: split acrn_mmio_dev_res out of acrn_mmiodev
  greybus: gb-beagleplay: Fix timeout handling in bootloader functions
  greybus: add WQ_PERCPU to alloc_workqueue users
  char/mwave: drop typedefs
  char/mwave: drop printk wrapper
  char/mwave: remove printk tracing
  char/mwave: remove unneeded fops
  char/mwave: remove MWAVE_FUTZ_WITH_OTHER_DEVICES ifdeffery
  ...
2025-12-06 18:34:24 -08:00
Rob Herring (Arm)
0b2333183a dt-bindings: Remove extra blank lines
Generally at most 1 blank line is the standard style for DT schema
files. Remove the few cases with more than 1 so that the yamllint check
for this can be enabled.

Acked-by: Lee Jones <lee@kernel.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> # remoteproc
Acked-by: Georgi Djakov <djakov@kernel.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Andi Shyti <andi.shyti@kernel.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Acked-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Uwe Kleine-König <ukleinek@kernel.org> # for allwinner,sun4i-a10-pwm.yaml
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> # mtd
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Acked-by: Manivannan Sadhasivam <mani@kernel.org> # For PCI controller bindings
Link: https://patch.msgid.link/20251023143957.2899600-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2025-11-17 11:24:50 -06:00
Herve Codina (Schneider Electric)
77538d1109 dt-bindings: iio: adc: Add the Renesas RZ/N1 ADC
The Renesas RZ/N1 ADC controller is the ADC controller available in the
Renesas RZ/N1 SoCs family.

Signed-off-by: Herve Codina (Schneider Electric) <herve.codina@bootlin.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-11-09 15:05:55 +00:00
Billy Tsai
436cd77125 dt-bindings: iio: adc: Add AST2700 ADC compatible strings
Add the compatible strings "aspeed,ast2700-adc0" and "aspeed,ast2700-adc1"
to the binding for the Aspeed ADC. These new compatibles represent the
ADC instances found on the AST2700 SoC, which are similar to the AST2600
but have their trimming data located at different SCU offset.

Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-11-09 15:02:57 +00:00
Jack Hsu
759cafdd8b dt-bindings: iio: adc: Support MediaTek MT8189 evb board auxadc
add compatible string for mt8189 evb board dts node of auxadc

Signed-off-by: Jack Hsu <jh.hsu@mediatek.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-11-09 12:57:05 +00:00
Heiko Stuebner
3ddda1db15 dt-bindings: iio: adc: Add rockchip,rk3506-saradc variant
The SARADC of the RK3506 is similar to the one found in the RK3528
in terms of number of channels and the other implementation details.

So add a variant compatible for it, that reflects this fact.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-11-09 12:57:04 +00:00
Antoniu Miclaus
24e6d7e9f2 dt-bindings: iio: adc: adi,ad4080: add support for AD4087
Add device tree binding support for the AD4087 14-bit SAR ADC.
Add adi,ad4087 to the compatible enum.

A fallback compatible string to adi,ad4080 is not appropriate as the
AD4087 has different resolution (14-bit vs 20-bit) and LVDS CNV clock
count maximum (1 vs 7), requiring different driver configuration.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-11-09 12:57:04 +00:00
Antoniu Miclaus
45e81d6ac0 dt-bindings: iio: adc: adi,ad4080: add support for AD4086
Add device tree binding support for the AD4086 14-bit SAR ADC.
Add adi,ad4086 to the compatible enum.

A fallback compatible string to adi,ad4080 is not appropriate as the
AD4086 has different resolution (14-bit vs 20-bit) and LVDS CNV clock
count maximum (4 vs 7), requiring different driver configuration.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-11-09 12:57:03 +00:00
Antoniu Miclaus
f11de95215 dt-bindings: iio: adc: adi,ad4080: add support for AD4083
Add device tree binding support for the AD4083 16-bit SAR ADC.
Add adi,ad4083 to the compatible enum.

A fallback compatible string to adi,ad4080 is not appropriate as the
AD4083 has different resolution (16-bit vs 20-bit) and LVDS CNV clock
count maximum (5 vs 7), requiring different driver configuration.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-11-09 12:57:03 +00:00
Marilene Andrade Garcia
192e5bbf0a dt-bindings: iio: adc: add max14001
Add device-tree documentation for MAX14001/MAX14002 ADCs.
The MAX14001/MAX14002 are isolated, single-channel analog-to-digital
converters with programmable voltage comparators and inrush current
control optimized for configurable binary input applications.

They share the same features, but in the MAX14001 the inrush trigger
threshold, current magnitude, and current duration are all programmable,
whereas in the MAX14002 these parameters are fixed.

Co-developed-by: Kim Seer Paller <kimseer.paller@analog.com>
Signed-off-by: Kim Seer Paller <kimseer.paller@analog.com>
Signed-off-by: Marilene Andrade Garcia <marilene.agarcia@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-20 18:50:53 +01:00
Antoniu Miclaus
83185903b4 dt-bindings: iio: adc: adi,ad4080: add support for AD4081
Add device tree binding support for the AD4081 20-bit SAR ADC.
Add adi,ad4081 to the compatible enum.

A fallback compatible string to adi,ad4080 is not appropriate as the
AD4081 has a different LVDS CNV clock count maximum (2 vs 7), requiring
different driver configuration.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19 11:59:22 +01:00
Antoniu Miclaus
1b86053ba6 dt-bindings: iio: adc: adi,ad4080: add support for AD4084
Add device tree binding support for the AD4084 16-bit SAR ADC.
Add adi,ad4084 to the compatible enum.

A fallback compatible string to adi,ad4080 is not appropriate as the
AD4084 has different resolution (16-bit vs 20-bit) and LVDS CNV clock
count maximum (2 vs 7), requiring different driver configuration.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19 11:59:22 +01:00
Cosmin Tanislav
4d8d58987c dt-bindings: iio: adc: document RZ/T2H and RZ/N2H ADC
Document the A/D 12-Bit successive approximation converters found in the
Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs.

RZ/T2H has two ADCs with 4 channels and one with 6.
RZ/N2H has two ADCs with 4 channels and one with 15.

Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-10-19 11:59:18 +01:00
Matti Vaittinen
d021fb3ae8 dt-bindings: iio: adc: ROHM BD79112 ADC/GPIO
The ROHM BD79112 is an ADC/GPIO with 32 channels. The channel inputs can
be used as ADC or GPIO. Using the GPIOs as IRQ sources isn't supported.

The ADC is 12-bit, supporting input voltages up to 5.7V, and separate I/O
voltage supply. Maximum SPI clock rate is 20 MHz (10 MHz with
daisy-chain configuration) and maximum sampling rate is 1MSPS.

Add a device tree binding document for the ROHM BD79112.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-09-15 20:52:11 +01:00
Antoniu Miclaus
a29d1137ef dt-bindings: iio: adc: add ade9000
Add devicetree bindings support for ade9000.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-09-13 13:47:19 +01:00
Krzysztof Kozlowski
0f2aeee584 dt-bindings: iio: adc: samsung,exynos: Drop touchscreen support
With last user of touchscreen via ADC (S3C24xx SoC) gone, drop the
unused has-touchscreen property and optional touchscreen interrupt for
samsung,s3c6410-adc.  The samsung,s5pv210-adc is the only platform
having two interrupts, so add a constrain for that.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250830-s3c-cleanup-adc-v2-5-4f8299343d32@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-09-10 19:47:04 +01:00
Krzysztof Kozlowski
4a09265c42 dt-bindings: iio: adc: samsung,exynos: Drop S3C2410
Samsung S3C24xx family of SoCs was removed the Linux kernel in the
commit 61b7f8920b ("ARM: s3c: remove all s3c24xx support"), in January
2023.  There are no in-kernel users of remaining S3C24xx compatibles.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250830-s3c-cleanup-adc-v2-4-4f8299343d32@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-09-10 19:47:04 +01:00
Ioana Risteiu
a9ee71011a dt-bindings: iio: adc: add IIO backend support
Add the generic io-backends property to the AD7779 binding to enable
support for the IIO backend framework.

Also add the adi,num-lanes property to set the number of lanes used by
AD7779.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Ioana Risteiu <Ioana.Risteiu@analog.com>
Link: https://patch.msgid.link/20250825221355.6214-3-Ioana.Risteiu@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-08-31 13:36:25 +01:00
David Lechner
a52bdee13e dt-bindings: iio: adc: adi,ad7124: fix clocks properties
Use correct clocks properties for the AD7124 family of ADCs.

These ADCs have an internal clock along with an optional external clock
that can be connected to the CLK pin. This pin can be wired up 3 ways:
1. Not connected - the internal clock is used.
2. Connected to an external clock (input) - the external clock is used.
3. Connected to the CLK pin on another ADC (output) - the internal clock
   is used on one and the other is configured for an external clock.

The new bindings describe these 3 cases by picking one of the following:
1. Omit both clocks and #clock-cells properties.
2. Include only the clocks property with a phandle to the external clock.
3. Include only the #clock-cells property on the ADC providing the output.

The clock-names property is now deprecated and should not be used. The
MCLK signal that it refers to is an internal counter in the ADC and
therefore does not make sense as a devicetree property as it can't be
connected to anything external to the ADC. Since there is only one
possible external clock, the clock-names property is not needed anyway.
Based on the implementation of the Linux driver, it looks like the
"mclk" clock was basically being used as a control to select the power
mode of the ADC, which is not something that should be done in the
devicetree.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250828-iio-adc-ad7124-proper-clock-support-v3-1-0b317b4605e5@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-08-30 20:45:20 +01:00
Frank Li
21feb435be dt-bindings: iio: adc: max1238: Add #io-channel-cells property
Add #io-channel-cells property with a constant value of 1 because it is
multi-channel ADC.

Fix below CHECK_DTBS warnings:
  arch/arm/boot/dts/nxp/ls/ls1021a-iot.dtb: adc@35 (maxim,max1239): '#io-channel-cells' does not match any of the regexes: '^pinctrl-[0-9]+$'
	from schema $id: http://devicetree.org/schemas/iio/adc/maxim,max1238.yaml#

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20250818200014.3700738-1-Frank.Li@nxp.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-08-25 11:03:06 +01:00
Salih Erim
3f33d1530c MAINTAINERS: Update xilinx-ams driver maintainers
Anand left AMD/Xilinx some time ago. Salih and Connall are new
maintainers of xilinx-ams driver.

Signed-off-by: Salih Erim <salih.erim@amd.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Michal Simek <michal.simek@amd.com>
Acked-by: O'Griofa, Conall <conall.ogriofa@amd.com>
Link: https://patch.msgid.link/20250820100519.2272509-1-salih.erim@amd.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-08-25 09:25:16 +01:00
Matti Vaittinen
f1bbfc405e dt-bindings: iio: adc: Add BD7910[0,1,2,3]
The ROHM BD79100, BD79101, BD79102, BD79103 are very similar ADCs as the
ROHM BD79104. The BD79100 has only 1 channel. BD79101 has 2 channels and
the BD79102 has 4 channels. Both BD79103 and BD79104 have 4 channels,
and, based on the data sheets, they seem identical from the software
point-of-view.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/0874c5933cf56430b9440d19ff46f746e4897952.1755504346.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-08-18 20:11:59 +01:00
Krzysztof Kozlowski
26f0675fba dt-bindings: iio: Replace bouncing Analog emails
Emails to stefan.popa@analog.com and alexandru.tachici@analog.com bounce
permanently:

  Remote Server returned '550 5.1.10 RESOLVER.ADR.RecipientNotFound; Recipient not found by SMTP address lookup'

so replace them with Marcelo Schmitt and Nuno Sá (listed alphabetically
by first name) from Analog where appropriate.

Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Acked-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Link: https://patch.msgid.link/20250812132445.75398-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-08-16 14:23:39 +01:00
Matti Vaittinen
261b90763f dt-bindings: iio: adc: ad7476: Add ROHM bd79105
The ROHM BD79105 is a simple, 16-bit, 1-channel ADC with a 'CONVSTART'
pin used to start the ADC conversion. Other than the 'CONVSTART', there
are 3 supply pins (one used as a reference), analog inputs, ground and
communication pins. It's worth noting that the pin somewhat confusingly
labeled as 'DIN', is a pin which should be used as a chip-select. The IC
does not have any writable registers.

The device is designed so that the output pin can, in addition to
outputting the data, be used as a 'data-ready'-IRQ. There are cases
where the IRQ can't be used (because it is delivered via SPI data-line).
Hence, some systems may use a GPIO for polling the data readiness.

Add a compatible for the bd79105 and add the data-ready GPIO to the
binding.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/3f70f68665225be3091f8a0412e74037b6a2a88e.1754901948.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-08-16 13:21:21 +01:00
Matti Vaittinen
260bb98ce3 dt-bindings: iio: adc: ad7476: Drop redundant prop: true
The ad7476 supports a few variants with different power-supplies and
control GPIOs. The binding first unconditionally introduces all the
properties, and later sets them 'true' or 'false' based on the
combatible.

The 'true' seems to be implied by the initial property introduction so
the 'true' -branches in later conditional handling (based on the
compatible) can be omitted.

Drop the redundant true -branches.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/bee66444bf628ba9a34a02738a1842e2abc14290.1754901948.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-08-16 13:21:21 +01:00
Krzysztof Kozlowski
9712555650 dt-bindings: iio: adc: samsung,exynos-adc: Use correct IRQ level in example
The interrupt line to GIC is IRQ_TYPE_LEVEL_HIGH, so use that instead of
"none".  Also replace the hard-coded GIC_SPI flag.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250724111345.47889-7-krzysztof.kozlowski@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-08-16 11:57:05 +01:00