Hi Paul,
Am 25.09.2021 um 21:39 schrieb Paul Cercueil paul@crapouillou.net:
Le sam., sept. 25 2021 at 21:26:42 +0200, H. Nikolaus Schaller hns@goldelico.com a écrit :
Hi Paul,
Am 25.09.2021 um 21:08 schrieb Paul Cercueil paul@crapouillou.net: Hi Paul & Nikolaus, If you spent some time debugging the issue
we did ...
By saying that you didn't debug,
We did - but sometimes you don't see the wood for the trees.
(null) means you're printing a NULL pointer. So I could see that hdmi->next_bridge was NULL.
I remember we did find this, but did not understand that it should be initialized by dw-hdmi. And because we though that dw-hdmi has it its own connector, it is ok that way.
The place that sets it is dw_hdmi_parse_dt, which will return early with code 0, before next_bridge is set, if plat_data->output_port == 0, which was your case.
Well, we were still at 5.14 when we did these initial attempts to use hdmi-connector with synopsys. Back then, there was no dw_hdmi_parse_dt and no output_port.
IAW: we did not even have a chance to make it work on top of 5.14 the hdmi-connector way. And were sucessful.
I just noticed this when trying to backport the last puzzle piece...
Well, it is always difficult to hit a moving target.
Since your hdmi-connector is wired at port #1, then .output_port should be 1 as well.
Anyways it works now for 5.14.8 (our internal test) and 5.15-rc3.
And v4 of the jz4780 hdmi stuff will follow.
BR and thanks, Nikolaus