/dev/vchiq on rpi4 (aarch64)

[Alex Samorukov]

On 2021/02/25 16:51, Greg V wrote:

>> simplebus0: <mailbox at 7e00b840> mem 0x7e00b840-0x7e00b87b irq 55 compat 
>> brcm,bcm2711-vchiq (no driver attached)
>> 
>> Do i need to add something to the dtb to fix that?
> 
> No, sys/contrib/vchiq/interface/vchiq_arm/vchiq_kmod.c needs
> to actually bind to brcm,bcm2711-vchiq and not just the 2835 one.
> 
> (and, well, actually handle hardware difference between these)
Got it, that was my assumption. Already found in Linux sources that they 
are using different addressing and some other model-depended quicks. 
Also it seems that broadcom sources in contrib/ are based on very old 
release. Not sure if i have enough knowledge to properly sync them as it 
seems they been modified a lot.