From: Christian Eggers <ceggers@arri.de>
To: Oleksij Rempel <linux@rempel-privat.de>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, NXP Linux Team <linux-imx@nxp.com>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
linux-i2c@vger.kernel.org
Subject: [PATCH 0/3] i2c: imx: Fix handling of arbitration loss
Date: Thu, 17 Sep 2020 14:13:36 +0200 [thread overview]
Message-ID: <20200917121338.10757-1-ceggers@arri.de> (raw)
On my (noisy) system, I2C arbitration losses happen quite often. In it's
current implementation, the IAL flags is partly handled, but has a
number of shortcomings:
1. The driver runs unnecessarily in a timeout when waiting for an
interrupt.
2. The driver performs 500 ms busy-waiting without any value.
3. Arbitration loss errors may be reported one transfer later than they
occured.
Best regards
Christian
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next reply other threads:[~2020-09-17 12:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-17 12:13 Christian Eggers [this message]
-- strict thread matches above, loose matches on Subject: below --
2020-09-17 12:20 [PATCH 0/3] i2c: imx: Fix handling of arbitration loss Christian Eggers
2020-09-25 7:03 ` Oleksij Rempel
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