Dear Lothar Waßmann, > Hi, > > Marek Vasut writes: > > > > btw offtopic, I will at least try to fix the PIO in the meantime. > > > > > > Did you succeed at this? Because this is the real problem for the > > > DS1339 failing on our board. With DMA only transfers it works, but > > > other chips (TSC2007, PCA9554, SGTL5000) fail. > > > > Is that correct to assume that even DMA fails? So far I got to a patch > > [1], which is almost an RFC, but please give it a go. I suspect I didn't > > CC you, I will CC you on V2. > > I applied that patch and all the above mentioned devices seem to work > with it. > And with my patch the timing is also correct. First, please accept my appology for the delay. I finally measured the bus. Without this patch, I see 107khz at 100kHz setting and 410kHz at 400kHz setting. With this patch I see 93kHz and 307kHz respectively. I suspect the result really is board-dependent. Can you measure MX28EVK so we know what the result is there please? I don't have one here. Best regards, Marek Vasut -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
