Re: propper support of 5 wire SPI (SPI_READY signal)

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On Sat, Feb 20, 2016 at 10:40:52PM +0100, Oleksij Rempel wrote:

> I would need some naming suggestions (we call our protokol SSI). It
> looks like the protocol used by us has some differences with Davinci.
> The Dav. using SPI_READY line only
> to allow or pause transmission (fix me if i'm wrong)
> We call it Request line and use it to: Ready to Receive; Receive
> Finished; and Request data shift by slave.

Oh, so this isn't SPI_READY?

> In this case probably spi framework need to be extended with kind of
> request call back. If data is currently not transmitted and Req line is
> not used for flow control, then call driver specific function to
> initiate data shift.

This is sounding awfully like SPI slave support?

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