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

[Greg Ungerer]

Hi Marco,

On 29/3/23 01:11, Marco Felsch wrote:
> 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.

I agree this is the problem, I don't agree that the boot loader is the
only place to fix this :-)  I should be able to generate a working devicetree
blob from the kernel that is good, and ready to use no runtime changes
required I figure.

It is not overly difficult to break out the vpu nodes and have them
only included when you have a board that has the iMX8MP-quad with the
VPU hardware blocks.

Example patch attached.

Regards
Greg
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