linux-kernel - Re: [PATCH 0/5] spi: zynqmp-gqspi: Improve error recovery by resetting

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Message-ID: <3a38cc06-d052-420d-812e-7f3c0c6ef24c@linux.dev>
Date: Fri, 17 Jan 2025 11:17:35 -0500
From: Sean Anderson <sean.anderson@...ux.dev>
To: Mark Brown <broonie@...nel.org>
Cc: Michal Simek <michal.simek@....com>, linux-spi@...r.kernel.org,
 linux-kernel@...r.kernel.org, Jinjie Ruan <ruanjinjie@...wei.com>,
 linux-arm-kernel@...ts.infradead.org,
 Amit Kumar Mahapatra <amit.kumar-mahapatra@....com>,
 Miquel Raynal <miquel.raynal@...tlin.com>, Conor Dooley
 <conor+dt@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Rob Herring <robh@...nel.org>, devicetree@...r.kernel.org
Subject: Re: [PATCH 0/5] spi: zynqmp-gqspi: Improve error recovery by
 resetting

On 1/17/25 08:21, Mark Brown wrote:
> On Thu, Jan 16, 2025 at 05:55:16PM -0500, Sean Anderson wrote:
>> This series adds support for resetting the QSPI controller if we have a
>> timeout. I find this greatly improves the stability of the device, which
>> would tend to break after any timeout.
> 
> If you're hitting a timeout that tends to indicate there's already a
> serious stability problem...

This was mostly hit when I was hacking on the driver. But of course
there are probably still bugs lurking in this driver, so I think it is
good to handle the exceptional conditions in a more-robust way.

--Sean