* Tomi Valkeinen <tomi.valkei...@ideasonboard.com> [210226 09:04]:
> Hmm, if I read the code right, TE was not enabled at all before this patch.
> And this patch enables it. So maybe TE has never worked with that panel?
> 
> You could try changing the enable_te calls to pass false.
> 
> Or with the upstream driver, comment out
> 
> mipi_dsi_dcs_set_tear_on(ddata->dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);

Yup you're right that's it.

Commenting it out in drivers/gpu/drm/panel/panel-dsi-cm.c makes the
warnings go away.

There are some BTA related comments in the old v3.0.8 based Android
kernel for droid4 panel at [0], but I don't really follow what they
mean. Maybe it's some ordering issue?

Regards,

Tony


[0] 
https://github.com/NotKit/android_kernel_motorola_omap4-common/blob/hybris-11.0/drivers/video/omap2/displays/panel-mapphone.c
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