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Date:   Sat, 16 Oct 2021 20:31:20 -0500
From:   Stephen Boyd <>
To:     Abhinav Kumar <>,
        Bjorn Andersson <>,
        Daniel Vetter <>,
        David Airlie <>,
        Dmitry Baryshkov <>,
        Kalyan Thota <>,
        Kuogee Hsieh <>,
        Rob Clark <>, Sean Paul <>
Cc:     Rob Herring <>,,,,
Subject: Re: [PATCH v5 5/7] drm/msm/dp: Support up to 3 DP controllers

Quoting Bjorn Andersson (2021-10-16 15:18:41)
> Based on the removal of the g_dp_display and the movement of the
> priv->dp lookup into the DP code it's now possible to have multiple
> DP instances.
> In line with the other controllers in the MSM driver, introduce a
> per-compatible list of base addresses which is used to resolve the
> "instance id" for the given DP controller. This instance id is used as
> index in the priv->dp[] array.
> Then extend the initialization code to initialize struct drm_encoder for
> each of the registered priv->dp[] and update the logic for associating
> each struct msm_dp with the struct dpu_encoder_virt.
> A new enum is introduced to document the connection between the
> instances referenced in the dpu_intf_cfg array and the controllers in
> the DP driver and sc7180 is updated.
> Lastly, bump the number of struct msm_dp instances carries by priv->dp
> to 3, the currently known maximum number of controllers found in a
> Qualcomm SoC.
> Signed-off-by: Bjorn Andersson <>
> ---

Reviewed-by: Stephen Boyd <>

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