linux-kernel - Re: [Freedreno] [PATCH 0/4] drm/msm/dp: Add support for SC8180x eDP controller

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Date:   Tue, 18 May 2021 20:41:41 -0700
From:   abhinavk@...eaurora.org
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Stephen Boyd <swboyd@...omium.org>, sbillaka@...eaurora.org,
        Tanmay Shah <tanmay@...eaurora.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        freedreno@...ts.freedesktop.org,
        Chandan Uddaraju <chandanu@...eaurora.org>
Subject: Re: [Freedreno] [PATCH 0/4] drm/msm/dp: Add support for SC8180x eDP
 controller

Hi Bjorn

I had a quick glance on the series and before getting to other things 
wanted to know how you are initializing two different connectors for
DP & EDP resp.

The connector type for DP should be DRM_MODE_CONNECTOR_DisplayPort and 
eDP should be DRM_MODE_CONNECTOR_eDP.
We need both to be created so that both EDP and DP can be supported 
concurrently.

Will these changes work for concurrent eDP and DP case?

Thanks

Abhinav

On 2021-05-10 21:20, Bjorn Andersson wrote:
> The first patch in the series is somewhat unrelated to the support, but
> simplifies reasoning and debugging of timing related issues.
> 
> The second patch introduces support for dealing with different register 
> block
> layouts, which is used in the forth patch to describe the hardware 
> blocks found
> in the SC8180x eDP block.
> 
> The third patch configures the INTF_CONFIG register, which carries the
> configuration for widebus handling. As with the DPU the bootloader 
> enables
> widebus and we need to disable it, or implement support for adjusting 
> the
> timing.
> 
> Bjorn Andersson (4):
>   drm/msm/dp: Simplify the mvid/nvid calculation
>   drm/msm/dp: Store each subblock in the io region
>   drm/msm/dp: Initialize the INTF_CONFIG register
>   drm/msm/dp: Add support for SC8180x eDP
> 
>  drivers/gpu/drm/msm/dp/dp_catalog.c | 99 +++++++----------------------
>  drivers/gpu/drm/msm/dp/dp_display.c |  1 +
>  drivers/gpu/drm/msm/dp/dp_parser.c  | 22 +++++++
>  drivers/gpu/drm/msm/dp/dp_parser.h  |  8 +++
>  4 files changed, 53 insertions(+), 77 deletions(-)