Re: [PATCH v4 24/80] drm/omap: dsi: move TE GPIO handling into core

On 08/02/2021 19:55, Tony Lindgren wrote:

Hi,

* Tomi Valkeinen [off-list ref] [201124 12:47]:

quoted

From: Sebastian Reichel <redacted>

In preparation for removing custom DSS calls from the DSI
panel driver, this moves support for external tearing event
GPIOs into the DSI host driver. This way tearing events are
always handled in the core resulting in simplification of
the panel drivers.

The TE GPIO acquisition follows works in the same way as the
exynos DSI implementation.

Looks like this patch causes the following warnings:

DSI: omapdss DSI error: Failed to receive BTA
DSI: omapdss DSI error: bta sync failed
DSI: omapdss DSI error: vc(0) busy when trying to config for VP
DSI: omapdss DSI error: Failed to receive BTA
DSI: omapdss DSI error: bta sync failed
DSI: omapdss DSI error: vc(0) busy when trying to config for VP
DSI: omapdss DSI error: Failed to receive BTA
DSI: omapdss DSI error: bta sync failed
DSI: omapdss DSI error: vc(0) busy when trying to config for VP
...

Any ideas? The display works for me despite the constant
warnings.

Which board is that? Do the errors start right from the boot, or only
after running something in userspace?

 Tomi