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

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Message-ID: <CAOMZO5BAheG4r1Umnd7bLhOqezsxJgE0x1c-858EcabbpPm6Pg@mail.gmail.com>
Date:   Mon, 1 Aug 2022 16:33:43 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Adam Ford <aford173@...il.com>
Cc:     dri-devel <dri-devel@...ts.freedesktop.org>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Robert Foss <robert.foss@...aro.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Jagan Teki <jagan@...rulasolutions.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Marek Vasut <marex@...x.de>, Stefan Agner <stefan@...er.ch>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        arm-soc <linux-arm-kernel@...ts.infradead.org>
Subject: Re: imx8mm lcdif->dsi->adv7535 no video, no errors

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

Does it work on your board?