On Tue, Jun 12 2018, Boris Brezillon wrote: > > Just because you managed to solve the problem in one driver does not > mean the problem does not exist for others. I read this datasheet [1] > several times and couldn't find a way to say 'I want to keep the CS > asserted between 2 transactions', so I think we really need this patch. I agree that my experience doesn't necessarily generalize. As the patch carried by signed-off-by (even though I only wrote little parts of it) I wanted to make it clear that I had no desire to promote the patch - maybe I stated that too strongly. Thanks for the link to the data sheet. I had a bit of a look, but reading these things must be an art that I haven't fully mastered yet - it would probably take me a few days to really understand it. The Programmable Sequence Enginine (Section 10.2.5.3.1) seems interesting. I wouldn't be surprised that that lets you do interesting things. It is obviously quite a powerful unit and it is surprising - to me - that it might not allow arbitrarily long messages, but I cannot justify the time to really dig in and see if that is the case. Maybe you are right. I have no particular objections to the patch, I just don't want to be seen as speaking in favour of it. Thanks, NeilBrown > > Regards, > > Boris > > [1]https://www.nxp.com/docs/en/reference-manual/VFXXXRM.pdf
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