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

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Date:   Mon, 1 Aug 2022 20:39:12 -0500
From:   Adam Ford <aford173@...il.com>
To:     Fabio Estevam <festevam@...il.com>
Cc:     Marco Felsch <m.felsch@...gutronix.de>,
        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

On Mon, Aug 1, 2022 at 6:12 PM Fabio Estevam <festevam@...il.com> wrote:
>
> Hi Marco,
>
> On Mon, Aug 1, 2022 at 7:55 PM Marco Felsch <m.felsch@...gutronix.de> wrote:
>
> > Question is, does your setup work for all modes after applying your
> > patches and without using the NXP-downstream porches settings? We also
>
> Without Frieder's patch:
> "drm/exynos: Fix horizontal timing settings in MHPORCH/MSYNC
> registers", I get no HDMI output.
>

I managed to get my HDMI output working. I had the lanes set to 2
instead of 4.  Once I switched to 4-lanes, the monitor came up in
1080p.  I haven't yet been able to get other modes to work.

adam
> Regards,
>
> Fabio Estevam