linux-kernel - Re: [RFC PATCH 2/9] drm: bridge: Add Samsung SEC MIPI DSIM bridge driver

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Date:   Thu, 24 Jun 2021 09:46:10 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Jagan Teki <jagan@...rulasolutions.com>,
        Inki Dae <inki.dae@...sung.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Michael Tretter <m.tretter@...gutronix.de>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, Peng Fan <peng.fan@....com>,
        Francis Laniel <francis.laniel@...rulasolutions.com>,
        Matteo Lisi <matteo.lisi@...icam.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        linux-amarula <linux-amarula@...rulasolutions.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Robert Foss <robert.foss@...aro.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        DRI mailing list <dri-devel@...ts.freedesktop.org>,
        Milco Pratesi <milco.pratesi@...icam.com>,
        Anthony Brandon <anthony@...rulasolutions.com>,
        linux-phy@...ts.infradead.org, Fancy Fang <chen.fang@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        NXP Linux Team <linux-imx@....com>
Subject: Re: [RFC PATCH 2/9] drm: bridge: Add Samsung SEC MIPI DSIM bridge driver

Hi Jagan,

On Thu, Jun 24, 2021 at 9:32 AM Jagan Teki <jagan@...rulasolutions.com> wrote:

> > I had a brief look at the exynos driver, and I think it should be turned
> > into a DRM bridge as part of this rework to be used with the i.MX8MM.
> >
> > Is there someone from Samsung who could assist, at least to test the
> > changes ?
>
> I have hardware to verify it on i.MX8MM but from exynos I don't have
> any contact from Samsung to suggest or test. Maybe I can add Tomasz
> Figa while sending the changes?

Adding Inki Dae and Marek Szyprowski from Samsung who helped to review
Michael's series.

> I understand that there are 2 key implementations.
>
> 1. Adjust the exynos_drm_dsi.c by dropping component_ops as i.MX8MM
> flow with LCDIF doesn't have component_ops (make sure it works with
> exynos platform first)
> 2. Sec DSIM Bridge driver common cross Exynos and i.MX8MM platform
> drivers or only one Sec DSIM bridge driver to handle both the
> platforms by differentiating compatible and driver data
>
> Any more suggestions would be appreciated?
>
> Jagan.