On Fri, 16 Mar 2018, José Roberto de Souza jose.souza@intel.com wrote:

eDP 1.4a specification defines PSR version 3, it PSR2 with the addition of Y-coordinate support when doing selective update.

Signed-off-by: José Roberto de Souza jose.souza@intel.com

include/drm/drm_dp_helper.h | 1 + 1 file changed, 1 insertion(+)

diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 4de97e94ef9d..62903bae0221 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -288,6 +288,7 @@ #define DP_PSR_SUPPORT 0x070 /* XXX 1.2? */ # define DP_PSR_IS_SUPPORTED 1 # define DP_PSR2_IS_SUPPORTED 2 /* eDP 1.4 */ +# define DP_PSR2_WITH_Y_COORD_IS_SUPPORTED 3 /* eDP 1.4a */

I wish the spec would give us sensible names to work with... We can't call it PSR3, so we might as well go with this.

Pushed to drm-misc-next, thanks for the patch.

BR, Jani.

#define DP_PSR_CAPS 0x071 /* XXX 1.2? */ # define DP_PSR_NO_TRAIN_ON_EXIT 1