linux-kernel - [PATCH 0/4] Apple/PASemi i2c error recovery fixes

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Message-Id: <20250222-pasemi-fixes-v1-0-d7ea33d50c5e@svenpeter.dev>
Date: Sat, 22 Feb 2025 13:38:32 +0000
From: Sven Peter via B4 Relay <devnull+sven.svenpeter.dev@...nel.org>
To: Janne Grunau <j@...nau.net>, Alyssa Rosenzweig <alyssa@...enzweig.io>, 
 Madhavan Srinivasan <maddy@...ux.ibm.com>, 
 Michael Ellerman <mpe@...erman.id.au>, Nicholas Piggin <npiggin@...il.com>, 
 Christophe Leroy <christophe.leroy@...roup.eu>, 
 Naveen N Rao <naveen@...nel.org>, Andi Shyti <andi.shyti@...nel.org>
Cc: linuxppc-dev@...ts.ozlabs.org, asahi@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-i2c@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Sven Peter <sven@...npeter.dev>, 
 Hector Martin <marcan@...can.st>
Subject: [PATCH 0/4] Apple/PASemi i2c error recovery fixes

Hi,

This series adds a few fixes/improvements to the error recovery for
Apple/PASemi i2c controllers.
The patches have been in our downstream tree and were originally used
to debug a rare glitch caused by clock strechting but are useful in
general. We haven't seen the controller misbehave since adding these.

Best,

Sven

Signed-off-by: Sven Peter <sven@...npeter.dev>
---
Hector Martin (3):
      i2c: pasemi: Improve error recovery
      i2c: pasemi: Enable the unjam machine
      i2c: pasemi: Log bus reset causes

Sven Peter (1):
      i2c: pasemi: Add registers bits and switch to BIT()

 drivers/i2c/busses/i2c-pasemi-core.c | 121 ++++++++++++++++++++++++++---------
 1 file changed, 92 insertions(+), 29 deletions(-)
---
base-commit: 2014c95afecee3e76ca4a56956a936e23283f05b
change-id: 20250220-pasemi-fixes-916cb77404ba

Best regards,
-- 
Sven Peter <sven@...npeter.dev>