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

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

Bspec: 49291
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201007002210.3678024-7-lucas.demarchi@intel.com
This commit is contained in:
Matt Roper 2020-10-06 17:22:09 -07:00 committed by Lucas De Marchi
parent 0642c2b837
commit e73e4c59ac
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/display/intel_combo_phy.c
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@ -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;