From: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
To: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>,
intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Subject: Re: i915 with valleyview
Date: Mon, 9 May 2016 12:33:13 +0100 [thread overview]
Message-ID: <20160509113312.GA2945@sudip-tp> (raw)
In-Reply-To: <87y47jiqyj.fsf@intel.com>
On Mon, May 09, 2016 at 11:19:16AM +0300, Jani Nikula wrote:
> On Fri, 06 May 2016, Sudip Mukherjee <sudipm.mukherjee@gmail.com> wrote:
> > On Fri, May 06, 2016 at 12:21:04PM +0100, Sudip Mukherjee wrote:
> >> Hi Daniel,
> >> I am trying to use i915 in one of our board which has Intel ATOM E3840.
> >> I know Intel has released emgd driver for this cpu to use i915 but emgd
> >> is not supported on v4.5 (or v4.6). The board is having SFI (simple
> >> firmware interface) and maybe for that i915 is not finding the VBIOS and
> >> other required information.
> >
> > I have been looking more into it and looks like it is supposed to use
> > dsi but since there is no vbt so has_mipi is never set and dsi is never
> > initialized.
> > Can you please point me to somewhere or maybe give some idea how i can
> > use i915 in a board where there is no vbt.
>
> Hate to say it, but the i915 DSI support heavily relies on the VBT being
> present. Basically all the configuration is there. I haven't got a clue
> how emgd handles it. Maybe Matt does?
emgd has a config file where we have to specify the configuration for
it to work.
>
> Basically you'd either have to figure out the configuration for the
> panel from somewhere and feed it to intel_dsi_panel_vbt.c, or write a
> panel specific driver of your own.
and i guess i will also need to modify intel_dsi_init() as that is also
taking some of the information from the VBT.
Thanks for the information.
regards
sudip
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prev parent reply other threads:[~2016-05-09 11:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-06 11:21 i915 with valleyview Sudip Mukherjee
2016-05-06 19:13 ` Sudip Mukherjee
2016-05-09 8:19 ` Jani Nikula
2016-05-09 11:33 ` Sudip Mukherjee [this message]
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