From mboxrd@z Thu Jan  1 00:00:00 1970
From: jmkrzyszt@gmail.com (Janusz Krzysztofik)
Date: Tue, 07 Aug 2018 19:11:22 +0200
Subject: [RFC PATCH v2 05/12] mtd: rawnand: ams-delta: use GPIO API for
 data read/write
In-Reply-To: <20180807190627.4340aade@bbrezillon>
References: <20180718235710.18242-1-jmkrzyszt@gmail.com>
 <20180806222918.12644-6-jmkrzyszt@gmail.com>
 <20180807190627.4340aade@bbrezillon>
Message-ID: <1593487.Cmi0mten1c@z50>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

Hi Boris,

On Tuesday, August 7, 2018 7:06:27 PM CEST Boris Brezillon wrote:
> On Tue,  7 Aug 2018 00:29:11 +0200
> Janusz Krzysztofik <jmkrzyszt@gmail.com> wrote:
> 
> > Don't readw()/writew() data directly from/to GPIO port which is under
> > control of gpio-omap driver, use GPIO API instead.
> > 
> > Degrade of performance on Amstrad Delta is completely not acceptable.
> 
> Can we have numbers along with information about where the overhead is
> when using gpiod_{get,set}_raw_array_value()?

Yes, as soon as I get physical access to the device, probably this or next 
weekend.

Thanks,
Janusz