Re: [meta-freescale] imx6dl dunfell and kernel: linux-fslc or linux-fslc-imx?

From: "Andrey Zhizhikin" <andrey.z@gmail.com>
To: Terry Barnaby <terry@beam.ltd.uk>
Cc: Otavio Salvador <otavio.salvador@ossystems.com.br>,
	meta-freescale@lists.yoctoproject.org
Subject: Re: [meta-freescale] imx6dl dunfell and kernel: linux-fslc or linux-fslc-imx?
Date: Thu, 25 Feb 2021 13:24:52 +0100	[thread overview]
Message-ID: <CAHtQpK6X+mv-uoE7LNu1zwmWYNaASVp=H4JdOhcjqwzZgVafhA@mail.gmail.com> (raw)
In-Reply-To: <66670eb7-6ade-bf48-7a88-b2dc56944f10@beam.ltd.uk>

On Thu, Feb 25, 2021 at 12:50 PM Terry Barnaby <terry@beam.ltd.uk> wrote:
>
> On 25/02/2021 11:21, Otavio Salvador wrote:
> > Em qui., 25 de fev. de 2021 às 06:53, Terry Barnaby
> > <terry@beam.ltd.uk> escreveu:
> >>   From what I am seeing I will have to use a NXP fsl-* based distribution
> >> to support the imx hardware video processing features. I have built such
> >> a distro with both linux-fslc-imx and limux-imx kernels (I think!) for
> >> the Wandboard, which boots and runs but the HDMI display was not
> >> functional. I will persevere looking at that.
> > No, you don't. You can use linux-fslc (mainline) and fslc-* distros as
> > i.MX6 has full mainline support. At O.S. Systems we have been using
> > Linux mainline with many customers with great success.
> >
> Thanks for the info, I must be getting something wrong then.
>
> If I do, what I think is a standard http://freescale.github.io dunfell
> build, using "MACHINE ??= 'wandboard'", "DISTRO ?= 'fslc-x11'" and add
> IMAGE_INSTALL_append=" gstreamer1.0-plugins-imx" to get the gstreamer
> plugs for the imx video processing hardware support built (they are not
> there by default, this uses linux-fslc), I get an error:
>
> ERROR: Nothing RPROVIDES 'gstreamer1.0-plugins-imx' (but
> /datal3/DartSystems/ds200i-system/fsl-community-bsp/sources/meta-freescale-distro/recipes-fsl/images/fsl-image-multimedia-full.bb
> RDEPENDS on or otherwise requires it)
> gstreamer1.0-plugins-imx was skipped: incompatible with machine
> wandboard (not in COMPATIBLE_MACHINE)

This is expected, and actually follows to what I previously said:
gstreamer1.0-plugins-imx package is not compatible with Community BSP
(chosen by setting  IMX_DEFAULT_BSP="mainline").

As Fabio already indicated, gstreamer1.0-plugins-imx should be used
**only** with NXP-based BSP (selected by setting
IMX_DEFAULT_BSP="nxp") as it requires the NXP-specific modifications
in the kernel, which are not upstreamed (and probably would not be).

>
> If I use an IMX_DEFAULT_BSP="nxp" based build the
> gstreamer1.0-plugins-imx gets built. So what am i doing wrong ?
>

This is also expected behavior. Once opted for NXP-based BSP - package
compatibility becomes valid, hence it can be built and installed.

So in a sense - you're not doing anything wrong here. You're changing
the BSP flavor from Community to NXP-based one.

-- 
Regards,
Andrey.