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From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Doug Anderson <dianders@chromium.org>
Cc: Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	linux-arm-msm <linux-arm-msm@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Abhinav Kumar <abhinavk@codeaurora.org>,
	Stephen Boyd <swboyd@chromium.org>,
	Kuogee Hsieh <khsieh@codeaurora.org>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	Vara Reddy <varar@codeaurora.org>,
	freedreno <freedreno@lists.freedesktop.org>,
	Chandan Uddaraju <chandanu@codeaurora.org>
Subject: Re: [RFC] drm/msm/dp: Allow attaching a drm_panel
Date: Sat, 28 Aug 2021 09:40:31 -0500	[thread overview]
Message-ID: <YSpK3wTUdqlUyJxb@yoga> (raw)
In-Reply-To: <CAD=FV=UGtHXD==Yy8CVCOioYGb=2hqGQOoNWftD1Jj7OiEp51g@mail.gmail.com>

On Fri 27 Aug 15:52 CDT 2021, Doug Anderson wrote:

> Hi,
> 
> On Mon, Jul 26, 2021 at 4:15 PM Bjorn Andersson
> <bjorn.andersson@linaro.org> wrote:
> >
> > +static int dp_parser_find_panel(struct dp_parser *parser)
> > +{
> > +       struct device_node *np = parser->pdev->dev.of_node;
> > +       int rc;
> > +
> > +       rc = drm_of_find_panel_or_bridge(np, 2, 0, &parser->drm_panel, NULL);
> 
> Why port 2? Shouldn't this just be port 1 always? The yaml says that
> port 1 is "Output endpoint of the controller". We should just use port
> 1 here, right?
> 

I thought port 1 was the link to the Type-C controller, didn't give it a
second thought and took the next available.

But per the binding it makes sense that the panel is the "Output
endpoint of the controller" and I guess one will have either a Type-C
controller or a panel - even after the DP rework?

Regards,
Bjorn

  reply	other threads:[~2021-08-28 14:40 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-26 23:13 [RFC] drm/msm/dp: Allow attaching a drm_panel Bjorn Andersson
2021-07-29  9:59 ` Dmitry Baryshkov
2021-08-25 23:28   ` Bjorn Andersson
2021-08-26  1:31 ` Stephen Boyd
2021-08-26 20:36   ` Doug Anderson
2021-08-26 20:29 ` Doug Anderson
2021-08-27 20:52 ` Doug Anderson
2021-08-28 14:40   ` Bjorn Andersson [this message]
2021-08-30 16:01     ` Doug Anderson
2021-10-01 21:02   ` Bjorn Andersson
2021-10-05  0:36     ` Doug Anderson
2021-10-05  1:11       ` Bjorn Andersson
2021-10-05  1:50         ` Stephen Boyd
2021-10-05  2:11           ` Bjorn Andersson
2021-10-05 15:39         ` Doug Anderson
2021-10-05 17:34           ` Bjorn Andersson
2021-10-05 23:09             ` Doug Anderson
2021-10-06  2:29               ` Bjorn Andersson
2021-10-06 15:12                 ` Doug Anderson
2021-10-06 20:26                   ` Prashant Malani
2021-10-07 10:17                     ` Heikki Krogerus
2021-10-07 16:15                       ` Bjorn Andersson
2021-10-08 12:38                         ` Heikki Krogerus
2023-05-22 20:51                           ` Bjorn Andersson
2023-05-22 21:53                             ` Bjorn Andersson
2023-05-24  9:50                               ` Heikki Krogerus
2021-12-06 22:31                       ` Bjorn Andersson
2021-12-07 12:26                         ` Heikki Krogerus
2021-12-07 16:56                           ` Hans de Goede
2021-12-07 17:29                             ` Bjorn Andersson
2021-12-07 17:54                           ` Imre Deak

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