On Sun, Sep 25, 2016 at 10:15:24AM +0200, Danny Milosavljevic wrote: > Hi Maxime, > > On Fri, 23 Sep 2016 10:34:04 +0300 > Maxime Ripard <[email protected]> wrote: > > > That's weird indeed. Is it a regression, or is it something you just > > noticed? > > I only just noticed it. > > This is also the first device I use ever to have CPOL=1 CPHA=1 (a > TSS463AA). > > TSS463AA has multiple modi chooseable after reset and this one is > used in the Motorola SPI mode (as opposed to SCI, Intel SPI). > > I don't understand why the slave would affect the SCLK line - > TSS463AA is supposed to be the slave at all times. > > I've used SPI on A20 before and it worked. > > The next thing I'll do is I'll disconnect SCLK and see whether it > still does that.
Yes, I guess apart from all the tests Siarhei suggested already, disconnecting the device entirely and trying to make some transfers would be a good test. Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
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