Re: [PATCH V3 7/7] arm64: dts: imx8mp: add interconnect for hsio blk ctrl

[Marco Felsch]

Hi Greg,

On 23-03-29, Greg Ungerer wrote:
> Hi Marco,

...

> > I forgot to ask: Does your i.MX8MP have a VPU? There are i.MX8MP devices
> > (don't know the name) which don't have support for certain IPs. If this
> 
> The hardware platform I have is using the MIMX8ML4CVNKZAB "i.MX 8M Plus QuadLite"
> (https://www.nxp.com/part/MIMX8ML4CVNKZAB#/) which does not have the hardware
> video encode/decoder module (like the "i.MX 8M Plus Quad" parts).

and that's the problem :) You need to update your bootloader to a
version which support disabling the VPU nodes else you will always see
the errors.

> > is the case the bootloader will fixup your devicetree by disable the
> > corresponding nodes, we call this feature-controller:
> > 
> > https://elixir.bootlin.com/barebox/latest/source/arch/arm/dts/imx8mp.dtsi
> > 
> > As you can see the imx8mp.dtsi is missing the feature bits for the VPU
> > but you can check the i.mx8mm.dtsi. Here you can see that barebox will
> > check the availability of the vpu:
> > 
> > https://elixir.bootlin.com/barebox/latest/source/arch/arm/dts/imx8mm.dtsi
> 
> Ok, thanks, I'll take a look.

Patches are welcome if you use barebox :)

Regards,
  Marco