[PATCH] vchiq driver

[Steven A. Falco]

On 8/12/22 04:31 PM, Stefan Wahren wrote:
> Hi Steven,
> 
> Am 12.08.22 um 19:13 schrieb Steven A. Falco:
>> I am using Fedora Linux on a Raspberry Pi 4B.  When I use the kernel-provided device tree, I have a /dev/vchiq node, but if I instead use the firmware-provided device tree, this node is not created.
> not sure which kernel is meant, but it's not the mainline kernel.

I'm running Fedora Rawhide, which has kernel 5.19.0-65.fc37.aarch64.  I thought that kernel was current, but I can see that I was wrong. :-)

>> I have found that the mailbox used by the vchiq uses a different "compatible" tag in the FW DT, and this tag is not included in the driver's probe code.
>>
>> The attached patch adds support for the "brcm,bcm2711-vchiq" tag, which is what the FW DT uses.
>>
>> I haven't submitted any kernel patches in quite some time, so if I should use a different mailing list or process, please let me know.
> 
> Unfortunately it's not that simple [1] [2]
> 
> [1] - https://lore.kernel.org/linux-arm-kernel/Yk7vSzk2XD+55EK4@fedora/T/
> 
> [2] - https://archlinuxarm.org/forum/viewtopic.php?f=67&t=16107&start=10

Ok, thanks for the pointers.  It sounds like the right people are working on this.  Sorry for the noise.

	Steve