linux-kernel - Re: [PATCH] mtd: spi-nor: Support controllers with limited TX FIFO size

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Message-ID: <20180918164154.28d7a31c@bbrezillon>
Date:   Tue, 18 Sep 2018 16:41:54 +0200
From:   Boris Brezillon <boris.brezillon@...tlin.com>
To:     Frieder Schrempf <frieder.schrempf@...eet.de>
Cc:     Yogesh Gaur <yogeshnarayan.gaur@....com>, marek.vasut@...il.com,
        linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org,
        prabhakar.kushwaha@....com, linux-mtd@...ts.infradead.org,
        han.xu@....com, Fabio Estevam <fabio.estevam@....com>,
        david.wolfe@....com, computersforpeace@...il.com,
        festevam@...il.com
Subject: Re: [PATCH] mtd: spi-nor: Support controllers with limited TX FIFO
 size

On Tue, 18 Sep 2018 12:51:51 +0200
Frieder Schrempf <frieder.schrempf@...eet.de> wrote:

> I want to revive the discussion about this patch. Meanwhile we have 
> received confirmation from NXP, that the hardware can't handle writing 
> data chunks bigger than the TX buffer size, even when we use DMA to 
> refill the buffer [1].
> 
> This means, that this patch is required to get the FSL QSPI driver 
> working with the SPI mem framework.
> 
> Could you please reconsider this patch?

I'm all for taking this patch, just waiting for a green light from
Marek.