Commit e73e4c59 authored by Matt Roper's avatar Matt Roper Committed by Lucas De Marchi
Browse files

drm/i915/dg1: Update comp master/slave relationships for PHYs 



As with RKL, DG1's PHY C acts as a comp master for PHY D.

Bspec: 49291
Signed-off-by: default avatarMatt Roper <matthew.d.roper@intel.com>
Signed-off-by: default avatarLucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: default avatarAnusha Srivatsa <anusha.srivatsa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201007002210.3678024-7-lucas.demarchi@intel.com
parent 0642c2b8

drivers/gpu/drm/i915/display/intel_combo_phy.c

+2 −2
Original line number Diff line number Diff line
@@ -243,14 +243,14 @@ static bool phy_is_master(struct drm_i915_private *dev_priv, enum phy phy) 
	 *

	 * ICL,TGL:

	 *   A(master) -> B(slave), C(slave)

	 * RKL:

	 * RKL,DG1:

	 *   A(master) -> B(slave)

	 *   C(master) -> D(slave)

	 *

	 * We must set the IREFGEN bit for any PHY acting as a master

	 * to another PHY.

	 */

	if (IS_ROCKETLAKE(dev_priv) && phy == PHY_C)

	if ((IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv)) && phy == PHY_C)

		return true;



	return phy == PHY_A;