linux-kernel - Re: [PATCH v2 2/6] regmap: Use flexible sleep

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Message-ID: <b580524a-d476-adbe-59b9-4ae7d62626b1@gmail.com>
Date:   Wed, 2 Sep 2020 15:56:26 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Lee Jones <lee.jones@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Pavel Machek <pavel@....cz>, Dan Murphy <dmurphy@...com>,
        Sebastian Reichel <sre@...nel.org>,
        Lubomir Rintel <lkundrak@...sk>,
        Mark Brown <broonie@...nel.org>
Cc:     devicetree@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-leds@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        Jerome Brunet <jbrunet@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Kevin Hilman <khilman@...libre.com>
Subject: Re: [PATCH v2 2/6] regmap: Use flexible sleep

02.09.2020 15:47, Marek Szyprowski пишет:
> Hi Dmitry,
> 
> On 30.08.2020 20:53, Dmitry Osipenko wrote:
>> The multi-reg write function uses udelay(), which is a busy-loop based
>> delaying function that is not suitable for a long delays. Hence let's
>> replace the udelay() with fsleep(), which is flexible sleep function that
>> selects best delay function based on the delay-time.
>>
>> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> 
> This patch landed in today's linux-next (20200902) as commit 
> 2b32d2f7ce0a. Sadly it breaks booting of ARM 64bit Amlogic S922X based 
> Odroid N2 board. Here is the log:

Hello, Marek! Thank you for the feedback! I missed that remap supports
different types of locking, I'll make a another patch to fix this problem.