On Sun, 23 Aug 2026 02:33:17 +0200
Jorijn van der Graaf <jorijnvdgraaf@catcrafts.net> wrote:
> The TDK InvenSense ICM-42630 is a 6-axis IMU of the ICM-42600 family,
> used in the Fairphone 6. It needs no part-specific driver code: TDK
> confirmed it can be supported by inv_icm42600 without modification.
>
> The binding documents the new compatible with an invensense,icm42631
> fallback, and a WHOAMI mismatch no longer fails probe, so that a
> fallback-matched part can probe; one informational line records the
> mismatch, and a whoami of 0x00/0xff (no response) still fails. No
> driver id entries are added: the part binds through the fallback.
>
> Tested on the Fairphone 6 with the fallback pair in the devicetree,
> via a backport to its 7.1-based kernel: matched as icm42631 through
> the fallback, the part probes with the one informational line, and
> accelerometer, gyroscope and temperature reads work.
>
> Changes in v5:
> - patch 2: the no-response guard moves before the whoami-mismatch
> comparison as its own check (Andy); it does not depend on
> hw->whoami, since no supported part uses either value
> - patch 2: the four Link trailers are dropped (Andy, Jonathan); the
> Suggested-by tags carry the attribution
>
> v4: https://lore.kernel.org/all/20260810191157.125550-1-jorijnvdgraaf@catcrafts.net/
> v3: https://lore.kernel.org/all/20260728184351.75015-1-jorijnvdgraaf@catcrafts.net/
> v2: https://lore.kernel.org/all/20260724202708.128267-1-jorijnvdgraaf@catcrafts.net/
> v1: https://lore.kernel.org/all/20260720173411.82979-1-jorijnvdgraaf@catcrafts.net/
>
> Jorijn van der Graaf (3):
> iio: imu: inv_icm42600: sort device id tables numerically
> iio: imu: inv_icm42600: log whoami mismatch instead of failing probe
> dt-bindings: iio: imu: icm42600: add icm42630
Applied to the testing branch of iio.git. Note I'll be rebasing on rc1 once
available (in about 1 week) so until then I'm fine adding tags or with changes
on top if any review feedback comes in.
Thanks,
Jonathan
>
> .../bindings/iio/imu/invensense,icm42600.yaml | 24 +++++++++++--------
> .../iio/imu/inv_icm42600/inv_icm42600_core.c | 17 ++++++++++---
> .../iio/imu/inv_icm42600/inv_icm42600_i2c.c | 16 ++++++-------
> .../iio/imu/inv_icm42600/inv_icm42600_spi.c | 16 ++++++-------
> 4 files changed, 44 insertions(+), 29 deletions(-)
>
>
> base-commit: 350d1fb9204b13c5f95e511e98b8bcb47574d425