Subject: [RFC PATCH v2 05/12] mtd: rawnand: ams-delta: use GPIO API for data read/write

From: [email-masked] (Boris Brezillon)
Date: Tue, 7 Aug 2018 19:06:27 +0200

On Tue,  7 Aug 2018 00:29:11 +0200
Janusz Krzysztofik <[email-masked]> 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()?

> 
> The driver should work with any 8+-bit bidirectional GPIO port, not
> only OMAP.

That's cool!