linux-kernel - Re: [PATCH v2 3/6] spi: sun6i: restrict transfer length in PIO-mode

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Date:   Thu, 17 May 2018 16:09:12 +0900
From:   Mark Brown <broonie@...nel.org>
To:     Sergey Suloev <ssuloev@...altech.com>
Cc:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>, linux-spi@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/6] spi: sun6i: restrict transfer length in PIO-mode

On Fri, Mar 30, 2018 at 03:50:44PM +0300, Sergey Suloev wrote:

> There is no need to handle 3/4 empty/full interrupts as
> the maximum supported transfer length in PIO mode is
> 128 bytes for sun6i- and 64 bytes for sun8i-family SoCs.

Surely the whole point of the 3/4 full interrupts is to allow the FIFO
to be refilled and enable longer transfers?

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