From patchwork Sat Feb 22 13:38:32 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sven Peter via B4 Relay X-Patchwork-Id: 867574 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7A8A827453; Sat, 22 Feb 2025 13:38:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740231522; cv=none; b=ImdCaoBDRea0MJanu3xulcB7M3cni5ghg9m7xGGMW7oV1fvH6vHWHHwtSijpaGL467RFVJ9hMBPebEd7/+P3pHDwKY8PEKKlQ+Hr5efFzStKhCBukWTPqtAmmrAtpUMGcL74ey5DFSREtKvUibL7UAoGHDR0r0qrkSL5baNAQoA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740231522; c=relaxed/simple; bh=YvDVaUlNxk0FFYVh0Uih/QBxDdTXOT7A8XEjDIMtIh8=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=ILiffb6Y45glbkDFxceSd9rsrngb4xSvKinGadEutm1REISEdcLqvQEi/ca9NYk+j17fjaSBypPE/DfPNZaGdnMLuj9+61neQ2ghqbePUTdHI5Ee1rbtmLbRYKG9rWY/wyowQCzdtiY7xBd5gi6bunURbcQMJ3Tp7zGKOXDayV4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZhE5nsTR; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZhE5nsTR" Received: by smtp.kernel.org (Postfix) with ESMTPS id 45F11C4CEE2; Sat, 22 Feb 2025 13:38:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1740231522; bh=YvDVaUlNxk0FFYVh0Uih/QBxDdTXOT7A8XEjDIMtIh8=; h=From:Subject:Date:To:Cc:Reply-To:From; b=ZhE5nsTRYzQ+xatxbsjltkmXjh4yz5WSZQT0ORjz/ia6DJh/+c0KCvrgkMHMyfvyU bXNgj/KMZL8hfTAfvtWD5nWhDyjoN3LUGVlwwPKv/fkxV8gAcp4vtjWk2Dfa4HLGgn 4h3Q2Y2F7/0SwRmqdCJVR5zQ1UPd03x3J0uol3c4L6bbbUwBYTbKGW4/iANsTgpi/R tzscufz5qnk6PQ3YazNK7IIvefqcVF7qgsUzqjiVNW3zC0wDff35tKvJFhYzgw/Ru4 uOOl4hdcJIjtWojAHSS7G/G4ZxjdwyIKk3P96DzWVYRUaM4FyJuOah+KTjxWqFDHnj yuLhSTAtwKpEQ== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2DD68C021B6; Sat, 22 Feb 2025 13:38:42 +0000 (UTC) From: Sven Peter via B4 Relay Subject: [PATCH 0/4] Apple/PASemi i2c error recovery fixes Date: Sat, 22 Feb 2025 13:38:32 +0000 Message-Id: <20250222-pasemi-fixes-v1-0-d7ea33d50c5e@svenpeter.dev> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAFjTuWcC/x3LQQqAIBBA0avIrBNULKmrRAu1qWaRiQMRSHdPW j4+vwJjIWSYRIWCNzFdqUF3AuLh046S1mYwyvTKGCWzZzxJbvQgy1EPMThnlQ0e2pIL/qEd8/K +H5oY4NteAAAA To: Janne Grunau , Alyssa Rosenzweig , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Naveen N Rao , Andi Shyti Cc: linuxppc-dev@lists.ozlabs.org, asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, Sven Peter , Hector Martin X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=914; i=sven@svenpeter.dev; h=from:subject:message-id; bh=YvDVaUlNxk0FFYVh0Uih/QBxDdTXOT7A8XEjDIMtIh8=; b=owGbwMvMwCHmIlirolUq95LxtFoSQ/rOy5HrJq+aLtY2ozoptL78762o7OM1P5+2PDjD8rfuR uLhdnuWjlIWBjEOBlkxRZbt++1Nnzx8I7h006X3MHNYmUCGMHBxCsBEPq9m+B8UVsSsKB6l/aLM SGmO1TO/xDc3TO5efhvyobe+eUXa+heMDF84zpXYKKjnr520yNlii5XDksSac68jXTJCt34JMb5 9nREA X-Developer-Key: i=sven@svenpeter.dev; a=openpgp; fpr=A1E3E34A2B3C820DBC4955E5993B08092F131F93 X-Endpoint-Received: by B4 Relay for sven@svenpeter.dev/default with auth_id=167 X-Original-From: Sven Peter Reply-To: sven@svenpeter.dev 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 --- 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,