[PATCH] vchiq driver

[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.

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.

	Steve
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