tech@,

SRX300 firmware DT describes the CIU root and several CIB interrupt
controllers with linux,phandle, but omits phandle.

octeon_intr_register() consumed only the latter; the controllers
therefore never entered the interrupt controller registry, and every
later interrupt-parent lookup for CIB, AHCI, and xHCI failed.

Thus, dev/ofw/fdt lookup code already treats phandle and linux,phandle
as equivalent; so the Octeon interrupt layer should do the same when
registering interrupt controllers.

Full DTS is here: https://kirill.korins.ky/pub/srx_300.dts

Ok?

Index: sys/arch/octeon/dev/octeon_intr.c
===================================================================
RCS file: /home/cvs/src/sys/arch/octeon/dev/octeon_intr.c,v
diff -u -p -r1.25 octeon_intr.c
--- sys/arch/octeon/dev/octeon_intr.c	17 Mar 2019 05:25:06 -0000	1.25
+++ sys/arch/octeon/dev/octeon_intr.c	19 Apr 2026 21:14:54 -0000
@@ -60,6 +60,8 @@ octeon_intr_register(struct intr_control
 
 	ic->ic_phandle = OF_getpropint(ic->ic_node, "phandle", 0);
 	if (ic->ic_phandle == 0)
+		ic->ic_phandle = OF_getpropint(ic->ic_node, "linux,phandle", 0);
+	if (ic->ic_phandle == 0)
 		return;
 
 	LIST_FOREACH(tmp, &octeon_ic_list, ic_list) {


-- 
wbr, Kirill