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Date:   Fri, 30 Jun 2023 20:43:48 +0300
From:   Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To:     Javier Martinez Canillas <javierm@redhat.com>
Cc:     linux-kernel@vger.kernel.org,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Arnd Bergmann <arnd@arndb.de>, Borislav Petkov <bp@alien8.de>,
        Daniel Vetter <daniel@ffwll.ch>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        David Airlie <airlied@gmail.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "H. Peter Anvin" <hpa@zytor.com>, Helge Deller <deller@gmx.de>,
        Ingo Molnar <mingo@redhat.com>,
        Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        Maxime Ripard <mripard@kernel.org>,
        Randy Dunlap <rdunlap@infradead.org>,
        Sam Ravnborg <sam@ravnborg.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org,
        x86@kernel.org
Subject: Re: [PATCH 0/2] Allow disabling all native fbdev drivers and only
 keeping DRM emulation
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On Fri, Jun 30, 2023 at 08:42:21PM +0300, Andy Shevchenko wrote:
> On Fri, Jun 30, 2023 at 07:38:01PM +0200, Javier Martinez Canillas wrote:
> > Andy Shevchenko <andriy.shevchenko@linux.intel.com> writes:
> > > On Fri, Jun 30, 2023 at 12:51:02AM +0200, Javier Martinez Canillas wrote:

...

> > >> The reason for doing this is that now with simpledrm, there's no need for
> > >> the legacy fbdev (e.g: efifb or vesafb) drivers anymore and many distros
> > >
> > > How does simpledrm works with earlycon=efi?
> > >
> > 
> > simpledrm isn't for earlycon. For that you use a different driver (i.e:
> > drivers/firmware/efi/earlycon.c). I'm just talking about fbdev drivers
> > here that could be replaced by simpledrm.
> 
> So, efifb can't be replaced. Please, fix your cover letter to reduce false
> impression of the scope of usage of the simpledrm.

Or tell how it can be used for earlycon on EFI platforms (if it can be).

-- 
With Best Regards,
Andy Shevchenko