From: Matt Roper <matthew.d.roper@xxxxxxxxx> ADL-S switches up which PHYs are considered a master to other PHYs; PHY-C is no longer a master, but PHY-D is now. Bspec: 49291 Cc: Jani Nikula <jani.nikula@xxxxxxxxx> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Cc: Imre Deak <imre.deak@xxxxxxxxx> Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx> Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx> Signed-off-by: Aditya Swarup <aditya.swarup@xxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_combo_phy.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_combo_phy.c b/drivers/gpu/drm/i915/display/intel_combo_phy.c index d5ad61e4083e..55d2d2d9efbb 100644 --- a/drivers/gpu/drm/i915/display/intel_combo_phy.c +++ b/drivers/gpu/drm/i915/display/intel_combo_phy.c @@ -246,14 +246,21 @@ static bool phy_is_master(struct drm_i915_private *dev_priv, enum phy phy) * RKL,DG1: * A(master) -> B(slave) * C(master) -> D(slave) + * ADL-S: + * A(master) -> B(slave), C(slave) + * D(master) -> E(slave) * * We must set the IREFGEN bit for any PHY acting as a master * to another PHY. */ - if ((IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv)) && phy == PHY_C) + if (phy == PHY_A) return true; + else if (IS_ALDERLAKE_S(dev_priv)) + return phy == PHY_D; + else if (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv)) + return phy == PHY_C; - return phy == PHY_A; + return false; } static bool icl_combo_phy_verify_state(struct drm_i915_private *dev_priv, -- 2.27.0 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
