Le lun. 15 févr. 2021 à 10:05, Neil Armstrong narmstrong@baylibre.com a écrit :
Hi,
On 14/02/2021 00:54, Paul Cercueil wrote:
Hi Phong and Neil,
I see you sent a patchset to support the ITE66121 HDMI transmitter, last version being the V2 back in March 2020.
Do you still plan to mainline it?
Yes, we still plan to mainline it.
Ok, great!
I do have a device with a ITE66121 chip, so I can help to clean the driver and have it mainlined. But right now I cannot get the driver to work, while the chip is properly detected and correct DDC data is read,, my PC monitor does not detect any signal.
Having DDC read working is a good point...
Did you check the DPI data setup ? the chip supports dual data rate input, and the last version only supported it via a DT property.
If "dual data rate" means two pixels per pixclock tick, then my SoC does not support it. I did try both modes though.
The other thing is that my SoC has no VDE/HDE pins, so (according to the manual) I have to have the chip recreate these signals from videomode information. Which I did, and I get the "video stable" status bit, but I still cannot get anything on screen.
Cheers, -Paul