linux-kernel - Re: [PATCH RFC v2 1/8] spi: dt-bindings: spi-peripheral-props: add spi-offloads property

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Message-ID: <35de37c08331a8384aa9ebde3a9be5fec6fc418e.camel@gmail.com>
Date: Thu, 23 May 2024 16:57:54 +0200
From: Nuno Sá <noname.nuno@...il.com>
To: David Lechner <dlechner@...libre.com>, Conor Dooley <conor@...nel.org>
Cc: Mark Brown <broonie@...nel.org>, Jonathan Cameron <jic23@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>,  Nuno Sá
 <nuno.sa@...log.com>, Michael Hennerich <Michael.Hennerich@...log.com>, 
 Lars-Peter Clausen <lars@...afoo.de>, David Jander <david@...tonic.nl>,
 Martin Sperl <kernel@...tin.sperl.org>, linux-spi@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-iio@...r.kernel.org
Subject: Re: [PATCH RFC v2 1/8] spi: dt-bindings: spi-peripheral-props: add
 spi-offloads property

On Thu, 2024-05-23 at 09:28 -0500, David Lechner wrote:
> On 5/22/24 1:24 PM, Conor Dooley wrote:
> > On Tue, May 21, 2024 at 09:54:39AM -0500, David Lechner wrote:
> > > On Sun, May 19, 2024 at 7:53 AM Conor Dooley <conor@...nel.org> wrote:
> > > > 
> > > > On Fri, May 17, 2024 at 11:51:58AM -0500, David Lechner wrote:
> > > > > On Thu, May 16, 2024 at 4:32 PM Conor Dooley <conor@...nel.org> wrote:
> > > > > > On Tue, May 14, 2024 at 05:56:47PM -0500, David Lechner wrote:
> > > > 
> 

..

> 
> controller:
> #spi-offload-cells = <2>: /* 1st cell = offload instance
>                            * 2nd cell = trigger provider */
> 

What about things like DMA? I'm mentioning it a lot because it's way more complex
having it on the controller (from a SW perspective). But from an HW point of view,
it's always very similar (if not the same) as your case A.

- Nuno Sá
>