Quoting Kuogee Hsieh (2023-08-08 15:19:50) > DP PHY re-initialization done using dp_ctrl_reinitialize_mainlink() will > cause PLL unlocked initially and then PLL gets locked at the end of > initialization. PLL_UNLOCKED interrupt will fire during this time if the > interrupt mask is enabled. > However currently DP driver link training implementation incorrectly > re-initializes PHY unconditionally during link training as the PHY was > already configured in dp_ctrl_enable_mainlink_clocks(). > > Fix this by re-initializing the PHY only if the previous link training > failed. > > [drm:dp_aux_isr] *ERROR* Unexpected DP AUX IRQ 0x01000000 when not busy > > Fixes: c943b4948b58 ("drm/msm/dp: add displayPort driver support") > Closes: https://gitlab.freedesktop.org/drm/msm/-/issues/30 > Signed-off-by: Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx> > --- Reviewed-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>