linux-arm-msm.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
To: Benjamin Li <benl@squareup.com>
Cc: Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	AngeloGioacchino Del Regno <kholk11@gmail.com>,
	Harigovindan P <harigovi@codeaurora.org>,
	Konrad Dybcio <konradybcio@gmail.com>,
	zhengbin <zhengbin13@huawei.com>,
	"open list:DRM DRIVER FOR MSM ADRENO GPU" 
	<linux-arm-msm@vger.kernel.org>,
	"open list:DRM DRIVER FOR MSM ADRENO GPU" 
	<dri-devel@lists.freedesktop.org>,
	freedreno <freedreno@lists.freedesktop.org>,
	open list <linux-kernel@vger.kernel.org>,
	Anibal Limon <anibal.limon@linaro.org>
Subject: Re: [PATCH] drm/msm/dsi: save PLL registers across first PHY reset
Date: Sat, 30 Jan 2021 19:16:10 +0300	[thread overview]
Message-ID: <CAA8EJprOYwe8pSc+QzptVjxWKiTG-jGxoUh0aa5JTGq-4nnt+g@mail.gmail.com> (raw)
In-Reply-To: <eda75757-5cf2-14a7-3de4-ca57eb099cfd@squareup.com>

On Sat, 30 Jan 2021 at 05:00, Benjamin Li <benl@squareup.com> wrote:
>
>
> On 10/30/20 6:55 AM, Dmitry Baryshkov wrote:
> > Hello,
> >
> > On 07/10/2020 03:10, benl-kernelpatches@squareup.com wrote:
> >> From: Benjamin Li <benl@squareup.com>
> >>
> >> Take advantage of previously-added support for persisting PLL
> >> registers across DSI PHY disable/enable cycles (see 328e1a6
> >> 'drm/msm/dsi: Save/Restore PLL status across PHY reset') to
> >> support persisting across the very first DSI PHY enable at
> >> boot.
> >
> > Interesting enough, this breaks exactly on 8016. On DB410c with latest bootloader and w/o splash screen this patch causes boot freeze. Without this patch the board would successfully boot with display routed to HDMI.
>
> Hi Dimtry,
>
> Thanks for your fix for the DB410c breakage ("drm/msm/dsi: do not
> try reading 28nm vco rate if it's not enabled") that this patch
> causes.
>
> I re-tested my patch on top of qcom/linux for-next (3e6a8ce094759)
> which now has your fix, on a DB410c with HDMI display and no splash
> (which seems to be the default using the Linaro SD card image's LK),
> and indeed it is fixed.
>
> I assume you already also did the same & are okay with this going in.
> Appreciate the testing!

Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested on RB5 and Dragonboard 845c (RB3).




-- 
With best wishes
Dmitry

  reply	other threads:[~2021-01-30 16:19 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-07  0:10 benl-kernelpatches
2020-10-30 13:55 ` Dmitry Baryshkov
2021-01-30  2:00   ` Benjamin Li
2021-01-30 16:16     ` Dmitry Baryshkov [this message]
2020-10-30 15:12 ` [PATCH] drm/msm/dsi: do not try reading 28nm vco rate if it's not enabled Dmitry Baryshkov
2020-12-29 20:15   ` patchwork-bot+linux-arm-msm
2021-05-15  0:33 ` [PATCH] drm/msm/dsi: save PLL registers across first PHY reset Dmitry Baryshkov

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAA8EJprOYwe8pSc+QzptVjxWKiTG-jGxoUh0aa5JTGq-4nnt+g@mail.gmail.com \
    --to=dmitry.baryshkov@linaro.org \
    --cc=airlied@linux.ie \
    --cc=anibal.limon@linaro.org \
    --cc=benl@squareup.com \
    --cc=daniel@ffwll.ch \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=freedreno@lists.freedesktop.org \
    --cc=harigovi@codeaurora.org \
    --cc=kholk11@gmail.com \
    --cc=konradybcio@gmail.com \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=robdclark@gmail.com \
    --cc=sean@poorly.run \
    --cc=zhengbin13@huawei.com \
    --subject='Re: [PATCH] drm/msm/dsi: save PLL registers across first PHY reset' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).