Shouldn't selecting a driver like FM6124 also set clkphase?

[JetForMe]

After a couple hours of debugging, the small bit of ghosting I had was caused by clkphase not being set to false. Shouldn't choosing the FM6124 driver automatically set clkphase for me?

[board707]

Please provide a more details.
How did you determine that your panel needs to have the clkphase set to false?
And I didn't quite understand how this is related to the Fm6124 driver - you have a panel with a chip this type?

[JetForMe]

It was glitchy with ghosting with clkphase == true, and setting it to false immediately cleared up all the issues (I tried many other things first, like changing the latch blanking and slowing the clock).

I do have a panel of this type. I was using the SHIFTREG driver first, and investigated the ICs to see if I should try one of the other drivers. Changing the driver alone did not solve the problem, but eventually I adjusted clkphase to false.

I'm not sure if all panels made with this IC require clkphase == false, but if they do, perhaps setting that drivers should also set the clkphase?

[board707]

I do have a panel of this type.

What are the ICs on the panel?

perhaps setting that drivers should also set the clkphase?

I am not the author of the code, but I would rather leave two separate options. The variety of panels is too large and there may be matrices where this driver requires other clock phase settings, so it is better to have two independent settings.

Moreover, I would separate other "double" options. For example, the option HUB75_I2S_CFG::DP3246_SM5368 - because the SM5368 multiplexer can be found on panels with any type of drivers, and not only with DP3246.

@mrcodetastic , what is your opinion?

[mrcodetastic]

People need to experiment to determine what works. There's too many combinations of chips for this library to ever have an 'out of the box' configuration.

[JetForMe]

I'm not sure that's true. I agree that you should be able to adjust the setting, but a particular driver chip is going to want a particular clock phase.

[mrcodetastic]

Good point @JetForMe. I'll put a specific override in the library for this chip type so others don't get stung by this issue.

[JetForMe]

Thanks!

[Sascha8]

I can confirm that both of my Waveshare 64x32 panels with FM6124C chips need to set clkphase to false.