linux-kernel - Re: [PATCH] drm/msm/dp: add wide bus support

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Date:   Mon, 31 Jan 2022 19:52:00 -0800
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Kuogee Hsieh <quic_khsieh@...cinc.com>
Cc:     robdclark@...il.com, sean@...rly.run, swboyd@...omium.org,
        vkoul@...nel.org, daniel@...ll.ch, airlied@...ux.ie,
        agross@...nel.org, dmitry.baryshkov@...aro.org,
        quic_abhinavk@...cinc.com, aravindh@...eaurora.org,
        freedreno@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/msm/dp: add wide bus support

On Fri 28 Jan 09:29 PST 2022, Kuogee Hsieh wrote:

> Normally, mdp will push one pixel of data per pixel clock to
> interface to display. Wide bus feature will increase bus
> width from 32 bits to 64 bits so that it can push two
> pixel of data per pixel clock to interface to display.
> This feature is pre requirement to support 4k resolution.
> 

Can you please elaborate further how this is a requirement for 4k
resolution, given that I write you this question on a 4k monitor.

Regards,
Bjorn