Issue with Remote KVM on EVB-AST2500 OpenBMC Builds

[Hariharan R]

Hi All,

Remote KVM is not working on EVB-AST2500 OpenBMC builds. After debugging, I found that /dev/video* is not created.
AST2500 SoC-based machines have video engine memory configured in the dts file, but the EVB-AST2500 device tree does not. This missing configuration leads to /dev/video* not being created in EVB-AST2500 builds.

AST2500 SoC-based machines with video engine memory configured:
https://github.com/openbmc/linux/blob/dev-6.12/arch/arm/boot/dts/aspeed/aspeed-bmc-opp-romulus.dts#L46
https://github.com/openbmc/linux/blob/dev-6.12/arch/arm/boot/dts/aspeed/aspeed-bmc-opp-witherspoon.dts#L43

AST2500EVB without video engine memory configured:
https://github.com/openbmc/linux/blob/dev-6.12/arch/arm/boot/dts/aspeed/aspeed-ast2500-evb.dts

I plan to add this configuration. Should this be added directly to openbmc/linux, or should I upstream the patch to Linux first?

Regards,
Hariharan R