linux-kernel - Re: imx8mm lcdif->dsi->adv7535 no video, no errors

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Message-ID: <20220801225538.qtdb5zd66g6ipewz@pengutronix.de>
Date:   Tue, 2 Aug 2022 00:55:38 +0200
From:   Marco Felsch <m.felsch@...gutronix.de>
To:     Fabio Estevam <festevam@...il.com>
Cc:     Adam Ford <aford173@...il.com>, Marek Vasut <marex@...x.de>,
        Stefan Agner <stefan@...er.ch>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Jonas Karlman <jonas@...boo.se>,
        David Airlie <airlied@...ux.ie>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Neil Armstrong <narmstrong@...libre.com>,
        NXP Linux Team <linux-imx@....com>,
        Robert Foss <robert.foss@...aro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        arm-soc <linux-arm-kernel@...ts.infradead.org>,
        Jagan Teki <jagan@...rulasolutions.com>, robert.chiras@....com,
        laurentiu.palcu@....com
Subject: Re: imx8mm lcdif->dsi->adv7535 no video, no errors

Hi Fabio, Adam,

+Cc Marek, Robert, Laurentiu

On 22-08-01, Fabio Estevam wrote:
> Hi Adam,
> 
> On Sat, Jul 30, 2022 at 12:16 PM Adam Ford <aford173@...il.com> wrote:
> >
> > Hey all,
> >
> > I am trying to test Jagan's patch series [1] to add support for the
> > samsung dsim bridge which is used on the imx8mm to output DSI video.
> > The DSIM gets the video from the mxsfb, and in my case, the DSI is
> > sent to the adv7535 for connecting to HDMI.
> 
> I had to add some extra patches on top of Jagan's imx8mm-dsi-v3 to get
> HDMI output functional on a imx8mm-evk via ADV7535:
> 
> https://github.com/fabioestevam/kernel/commits/imx8mm-dsi-v3

You have a few interesting patches from Marek and Robert I didn't
noticed yet :)

Question is, does your setup work for all modes after applying your
patches and without using the NXP-downstream porches settings? We also
have a few patches in our queue for the porch calculation which we wanna
send as soon as possible as we verified our assumptions.

Regards,
  Marco