[PATCH v4 0/2] i2c: pxa: fix I2C communication on Armada 3700
From: Gabor Juhos
Date: Thu Feb 26 2026 - 08:12:02 EST
There is a long standing bug which causes I2C communication not to
work on the Armada 3700 based boards. The first patch in the series
fixes that regression. The second patch improves recovery to make it
more robust which helps to avoid communication problems with certain
SFP modules.
Signed-off-by: Gabor Juhos <j4g8y7@xxxxxxxxx>
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Changes in v4:
- rebase on tip of i2c/i2c-host-fixes
- collect Tested-by tags
- Link to v3: https://lore.kernel.org/r/20250827-i2c-pxa-fix-i2c-communication-v3-0-052c9b1966a2@xxxxxxxxx
Changes in v3:
- rebase on tip of i2c/for-current
- remove Imre's tag from the cover letter, and replace his SoB tag to
Reviewed-by in the individual patches
- rework the second patch so it does not need changes in the I2C core code,
and drop the first one as it is not needed now
- Link to v2: https://lore.kernel.org/r/20250811-i2c-pxa-fix-i2c-communication-v2-0-ca42ea818dc9@xxxxxxxxx
Changes in v2:
- collect offered tags
- rebase and retest on tip of i2c/for-current
- Link to v1: https://lore.kernel.org/r/20250511-i2c-pxa-fix-i2c-communication-v1-0-e9097d09a015@xxxxxxxxx
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Gabor Juhos (2):
i2c: pxa: defer reset on Armada 3700 when recovery is used
i2c: pxa: handle 'Early Bus Busy' condition on Armada 3700
drivers/i2c/busses/i2c-pxa.c | 35 ++++++++++++++++++++++++++++-------
1 file changed, 28 insertions(+), 7 deletions(-)
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base-commit: b4b4d88ebfbfd3aadb4c9a0f2bfe1abdbaf5822c
change-id: 20250510-i2c-pxa-fix-i2c-communication-3e6de1e3d0c6
Best regards,
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Gabor Juhos <j4g8y7@xxxxxxxxx>