Re: [PATCH] drm/msm/dpu: correct DP MST interface configuration

From: Konrad Dybcio

Date: Wed Mar 25 2026 - 05:59:21 EST


On 3/25/26 6:32 AM, Dmitry Baryshkov wrote:
> Due to historical reasons we ended up with dummy values being specified
> for MST-related interfaces some of them had INTF_NONE, others had
> non-existing DP controller indices. Those workarounds are no longer
> necessary. Fix types and indices for all DP-MST related INTF instances.
>
> The only exception is INTF_3 on SC8180X, which has unique design. It can
> be used either with INTF_0 / DP0 or with INTF_4 / DP1. This interface is
> left with the dummy value until somebody implements necessary bits for
> that platform.
>
> Co-developed-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
> Signed-off-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
> Signed-off-by: Yongxing Mou <yongxing.mou@xxxxxxxxxxxxxxxx>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
> ---

> .name = "intf_8", .id = INTF_8,
> .base = 0x3c000, .len = 0x280,
> - .type = INTF_NONE,
> - .controller_id = MSM_DP_CONTROLLER_1,
> + .type = INTF_DP,
> + .controller_id = MSM_DP_CONTROLLER_1, /* pair with intf_8 for DP MST */

with intf_4

Konrad