> -----Original Message-----
> From: Intel-gfx <[email protected]> On Behalf Of
> Lucas De Marchi
> Sent: Thursday, July 2, 2020 5:24 AM
> To: [email protected]
> Subject: [Intel-gfx] [PATCH v3 20/28] drm/i915/dg1: Update comp
> master/slave relationships for PHYs
>
> From: Matt Roper <[email protected]>
>
> As with RKL, DG1's PHY C acts as a comp master for PHY D.
>
> Bspec: 49291
> Signed-off-by: Matt Roper <[email protected]>
> Signed-off-by: Lucas De Marchi <[email protected]>
Reviewed-by: Anusha Srivatsa <[email protected]>
> ---
> drivers/gpu/drm/i915/display/intel_combo_phy.c | 4 ++--
> 1 file changed, 2 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 8604d4392e6a..2fad4871d4e6 100644
> --- a/drivers/gpu/drm/i915/display/intel_combo_phy.c
> +++ b/drivers/gpu/drm/i915/display/intel_combo_phy.c
> @@ -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;
> --
> 2.26.2
>
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