Hi there,
I am trying to do some quick bringup tests on a carrier board that does not have anything on the HDMI pins. I am using a modified version of the tegra19x-mb1-pinmux-p2888-0000-a04-p2822-0000-b01.cfg o begin with.
I have added a pull-up to the DPx_HPD on channel 2, so it does not think an hdmi cable is connected, but I cannot find pinmux registers for the P/N I2C lines, and the kernel retries reading an EDID forever.
Are those pinmux registers under a hidden name somehow?
Regards
Disable the nvdisplay which is using HDMI port from device tree please. Do not use pinmux to disable the node.
All I am trying is to make it look like there is an HDMI with nothing connected, as it is quicker than creating a proper dtb… I’ll do that eventually, but for some bring up tests It would be easier to just add the required pull-ups.
Could you let me know why those registers are not documented?
If the pinmux spreadsheet and generated cfg don’t have it, then it cannot be configured.
As I remember the i2c ahd dp_aux pinmux requires the dp aux driver’s help. Some example from TX2 here.