On Wed, Oct 26, 2022 at 1:59 PM Elliot Berman <quic_eberman@xxxxxxxxxxx> wrote: ..... > + > + gunyah-resource-mgr@0 { > + compatible = "gunyah-resource-manager-1-0", "gunyah-resource-manager"; > + interrupts = <GIC_SPI 3 IRQ_TYPE_EDGE_RISING>, /* TX full IRQ */ > + <GIC_SPI 4 IRQ_TYPE_EDGE_RISING>; /* RX empty IRQ */ > + reg = <0x00000000 0x00000000>, <0x00000000 0x00000001>; > + /* TX, RX cap ids */ > + }; > All these resources are used only by the mailbox controller driver. So, this should be the mailbox controller node, rather than the mailbox user. One option is to load gunyah-resource-manager as a module that relies on the gunyah-mailbox provider. That would also avoid the "Allow direct registration to a channel" hack patch. thanks.