[PATCH 0/2] iio: dac: adi-axi-dac: fix for wrong bus read

Angelo Dureghello
2025-04-08T20:50:33Z

This patchset is intended to fix a random wrong chip ID read, or a
scratchpad test mismatch, tests done in the ad3552r-hs driver probe. The
bus "read" operation must always check for busy flag before reading.

First patch reorganizes a bit the busy-wait polling code, second patch
fixes the wrong bus read occurence.

NOTE: due to ongoing changes in adi-axi-dac.c, this patch is intended to be
applied after the linked "ramp generator" patch.

Link: https://lore.kernel.org/linux-iio/20250408-wip-bl-ad3552r-fixes-v4-0-b33c0264bd78@baylibre.com
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
---
Angelo Dureghello (2):
iio: dac: adi-axi-dac: use unique bus free check
iio: dac: adi-axi-dac: fix bus read

drivers/iio/dac/adi-axi-dac.c | 40 +++++++++++++++++++++++++---------------
1 file changed, 25 insertions(+), 15 deletions(-)
---
base-commit: 6fb85f14853ddde06d57030c753168402bf69cd9
change-id: 20250408-ad3552r-fix-bus-read-1522622fbd2b

Best regards,
--
Angelo Dureghello <adureghello@baylibre.com>