Currently vrr code is overwriting possibly set PSR PR Frame Change Enable bit in TRANS_PUSH register. Avoid this by using rmw instead of write. Signed-off-by: Jouni Högander <jouni.hogander@xxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_vrr.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c index 9a51f5bac3071..8b4e3f938efea 100644 --- a/drivers/gpu/drm/i915/display/intel_vrr.c +++ b/drivers/gpu/drm/i915/display/intel_vrr.c @@ -339,8 +339,8 @@ void intel_vrr_enable(const struct intel_crtc_state *crtc_state) if (!crtc_state->vrr.enable) return; - intel_de_write(display, TRANS_PUSH(display, cpu_transcoder), - TRANS_PUSH_EN); + intel_de_rmw(display, TRANS_PUSH(display, cpu_transcoder), 0, + TRANS_PUSH_EN); if (HAS_AS_SDP(display)) intel_de_write(display, @@ -371,7 +371,9 @@ void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state) intel_de_wait_for_clear(display, TRANS_VRR_STATUS(display, cpu_transcoder), VRR_STATUS_VRR_EN_LIVE, 1000); - intel_de_write(display, TRANS_PUSH(display, cpu_transcoder), 0); + + intel_de_rmw(display, TRANS_PUSH(display, cpu_transcoder), TRANS_PUSH_EN, + 0); if (HAS_AS_SDP(display)) intel_de_write(display, -- 2.34.1
