linux-kernel - Re: [PATCH] spi: fsi: Remove multiple sequenced ops for restricted chips

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Message-ID: <d79291deaa1e9960a177dd887884724f22eb0ea6.camel@linux.ibm.com>
Date:   Thu, 25 Mar 2021 09:46:50 -0500
From:   Eddie James <eajames@...ux.ibm.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
        joel@....id.au
Subject: Re: [PATCH] spi: fsi: Remove multiple sequenced ops for restricted
 chips

On Thu, 2021-03-25 at 13:50 +0000, Mark Brown wrote:
> On Wed, Mar 24, 2021 at 05:05:16PM -0500, Eddie James wrote:
> 
> > Updated restricted chips have trouble processing multiple sequenced
> > operations. So remove the capability to sequence multiple
> > operations and
> > reduce the maximum transfer size to 8 bytes.
> 
> That's a very small limit, it would be nice to be able to identify
> devices that can use the larger limit so they don't suffer
> needlessly.

Yes, this is only for the "restricted" controllers which are marked by
a different compatible string. I guess the commit message isn't
perfectly clear.

Thanks,
Eddie