On 30/09/2016 at 13:04:28 +0200, Richard Genoud wrote : > Anyway, the problematics setups are all the setups with USMODE_HWHS > enabled on platform without Fifos or PDC, > i.e. all platforms but sama5d2 (Cyrille, correct me if I'm wrong). > This is a wrong assumption, at91rm9200 to at91sam9g45 all have a pdc. Please, don't break those platforms. The only affected platforms are sam9x5, sama5d3 and sama5d4. > For instance, on sam9x5, if DMA is used, USMODE_HWHS enabled and > RTS/CTS NOT muxed as GPIOS, > it's like there was no flow control at all (the CTS pin doesn't > disable the transmitter). > > Since atmel HW guys said that USMODE_HWHS is broken for platforms !sama5d2, > (cfhttps://lkml.org/lkml/2016/9/7/598 ), I honestly didn't dig any > further into that flag. > > > Regards, > Richard -- Alexandre Belloni, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
