[igt-dev] [RFC i-g-t] LPSP igt test on TGL

[Ville Syrjälä]

On Thu, Feb 27, 2020 at 02:11:49PM +0530, Anshuman Gupta wrote:
> +-------------------------------------------------------------------------------+
> |                                                                               |
> |                                                                               |
> |                                                                               |
> |   +--------------------+        +-------------+         +------------+        |
> |   |                    |        |             |         |            |        |
> |   |    PIPE A          |        | DP/HDMI     |         |   PORT_A   |        |
> |   |                    +--------+ TRANSCODER  +---------+            |        |
> |   |                    |        |             |         |            |        |
> |   +--------------------+        +------------->         +------------>        |
> |                                 |             |         |            |        |
> |                                 |             |         |   PORT_B   |        |
> |                                 |             |         |            |        |
> |                                 |             |         |            |        |
> |                                 +------------->         +------------>        |
> |                                 |             |         |            |        |
> |                                 | DSI         |         |   PORT_C   |        |
> |                                 | TRANSCODER  |         |            |        |
> |                                 +------------->         +------------+        |
> |                                 |             |                               |
> |                                 |             |                               |
> |                                 |             |                               |
> |                                 |             |                               |
> |                                 |             |                               |
> |                                 |             |                               |
> |                                 |             |                               |
> |                                 +-------------+                               |
> |                                                                               |
> |                   LPSP on Tigerlake                                           |
> |                                                                               |
> +-------------------------------------------------------------------------------+
> 
> Above block diagram depicts lpsp on TGL, while earlier development of lpsp igt test
> it has been assumed that every non-edp panel is not a lpsp panel but it is not true
> on TGL,

It wasn't necessarily true on earlier platforms either. I don't know if
this makes any sense whatsoever. Probably a better way to validate would
be to check that the resulting power domains make sense for various
single pipe configurations.

-- 
Ville Syrjälä
Intel