On 2018-08-01 11:35, Russell King - ARM Linux wrote: > On Wed, Aug 01, 2018 at 11:01:12AM +0200, Peter Rosin wrote: >> I don't think it's a problem with the atmel I2C driver. IIRC, the >> tda998x driver issues the command a initiate the EDID read, but that >> times out. So it appears to be the TDA19988 that fails to read the >> EDID over the DDC bus? Which brings me to the double problem with the >> scopes mentioned above... > > It sounds like it. > > It may be helpful to know that there are HDMI pass-through boards > available that give access to all the HDMI signals: > > https://elabbay.myshopify.com/collections/camera > https://elabbay.myshopify.com/collections/camera/products/hdmi-af-af-v1a-hdmi-type-a-female-to-hdmi-type-a-male-pass-through-adapter-breakout-board > > I've never bought from them, so please don't take this as a > recommendation - the fact that there seems to be no company details > on their site doesn't seem good, and as the whois for elabbay.com is > obscured also doesn't give me any confidence to buy from them. I still will not be able to inspect the DDC bus between the TDA19988 and the buffer circuit (IP4786), but the gadget seems useful enough and it's not a shitload of money. We'll see how long it takes for it to get here... Thanks for the pointer! Maybe :-) Cheers, Peter _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
