Linux >= 4.18-rc1 changed the compat string for armada uart to a different value in b7639b0b15ddd1a4686b0142e70dfb122eefc88f.
Only compile tested for lack of hardware. Index: com_fdt.c =================================================================== RCS file: /cvs/src/sys/dev/fdt/com_fdt.c,v retrieving revision 1.1 diff -u -p -r1.1 com_fdt.c --- com_fdt.c 31 May 2018 20:03:18 -0000 1.1 +++ com_fdt.c 19 Jul 2018 09:07:21 -0000 @@ -56,6 +56,7 @@ com_fdt_init_cons(void) if ((node = fdt_find_cons("brcm,bcm2835-aux-uart")) == NULL && (node = fdt_find_cons("snps,dw-apb-uart")) == NULL && + (node = fdt_find_cons("marvell,armada-38x-uart")) == NULL && (node = fdt_find_cons("ti,omap3-uart")) == NULL && (node = fdt_find_cons("ti,omap4-uart")) == NULL) return; @@ -87,6 +88,7 @@ com_fdt_match(struct device *parent, voi return (OF_is_compatible(faa->fa_node, "brcm,bcm2835-aux-uart") || OF_is_compatible(faa->fa_node, "snps,dw-apb-uart") || + OF_is_compatible(faa->fa_node, "marvell,armada-38x-uart") || OF_is_compatible(faa->fa_node, "ti,omap3-uart") || OF_is_compatible(faa->fa_node, "ti,omap4-uart")); } @@ -121,7 +123,8 @@ com_fdt_attach(struct device *parent, st sc->sc_reg_width = OF_getpropint(faa->fa_node, "reg-io-width", 4); sc->sc_reg_shift = OF_getpropint(faa->fa_node, "reg-shift", 2); - if (OF_is_compatible(faa->fa_node, "snps,dw-apb-uart")) + if (OF_is_compatible(faa->fa_node, "snps,dw-apb-uart") || + OF_is_compatible(faa->fa_node, "marvell,armada-38x-uart")) intr = com_fdt_intr_designware; if (OF_is_compatible(faa->fa_node, "ti,omap3-uart") ||