Re: [PATCH 00/11] Add support for enhanced SPI for Designware SPI controllers

From: Serge Semin
Date: Fri Sep 02 2022 - 19:04:07 EST


On Tue, Aug 30, 2022 at 09:48:35AM +0100, Sudip Mukherjee wrote:
> On Fri, Aug 26, 2022 at 7:03 PM Serge Semin <fancer.lancer@xxxxxxxxx> wrote:
> >
> > Hello Sudip
> >
> > On Tue, Aug 02, 2022 at 06:57:44PM +0100, Sudip Mukherjee wrote:
> > > Some Synopsys SSI controllers support enhanced SPI which includes
> > > Dual mode, Quad mode and Octal mode. DWC_ssi includes clock stretching
> > > feature in enhanced SPI modes which can be used to prevent FIFO underflow
> > > and overflow conditions while transmitting or receiving the data respectively.
> > > This is only tested on controller version 1.03a.
> >
>
> <snip>
>
> >
> > I've deliberately collected all the generic comments here so you'd be
> > aware of the required changes in total, because I very much doubt all
> > of them could be fixed at once via a single patchset iteration. But as
> > soon as all of them are fixed we'll get a very nice and neat solution
> > for the eSPI feature.
> >
>

> Thanks a lot for the summary here Sergey. I am sure I will have a few
> questions for you after I start with the changes.

Ok. Don't hesitate to ask.

-Sergey

>
> --
> Regards
> Sudip