diff --git a/sysutils/dtb/Makefile b/sysutils/dtb/Makefile
index 90c35c05ce5..8702902240f 100644
--- a/sysutils/dtb/Makefile
+++ b/sysutils/dtb/Makefile
@@ -1,9 +1,10 @@
-# $OpenBSD: Makefile,v 1.20 2019/07/12 20:49:42 sthen Exp $
+# $OpenBSD: Makefile,v 1.21 2019/09/30 15:14:50 kurt Exp $
 
 ONLY_FOR_ARCHS=	${GCC4_ARCHS} ${CLANG_ARCHS}
 
 COMMENT=	Device Tree Blobs
 VERSION=	4.20
+REVISION=	0
 DISTNAME=	linux-${VERSION}
 PKGNAME=	dtb-${VERSION:S/-//}
 CATEGORIES=	sysutils
diff --git a/sysutils/dtb/patches/patch-arch_arm64_boot_dts_rockchip_rk3328-rock64_dts b/sysutils/dtb/patches/patch-arch_arm64_boot_dts_rockchip_rk3328-rock64_dts
new file mode 100644
index 00000000000..36de35ab6e4
--- /dev/null
+++ b/sysutils/dtb/patches/patch-arch_arm64_boot_dts_rockchip_rk3328-rock64_dts
@@ -0,0 +1,14 @@
+$OpenBSD: patch-arch_arm64_boot_dts_rockchip_rk3328-rock64_dts,v 1.1 2019/09/30 15:14:50 kurt Exp $
+
+Index: arch/arm64/boot/dts/rockchip/rk3328-rock64.dts
+--- arch/arm64/boot/dts/rockchip/rk3328-rock64.dts.orig
++++ arch/arm64/boot/dts/rockchip/rk3328-rock64.dts
+@@ -11,7 +11,7 @@
+ 	compatible = "pine64,rock64", "rockchip,rk3328";
+ 
+ 	chosen {
+-		stdout-path = "serial2:1500000n8";
++		stdout-path = "serial2:115200n8";
+ 	};
+ 
+ 	gmac_clkin: external-gmac-clock {
diff --git a/sysutils/dtb/patches/patch-arch_arm64_boot_dts_rockchip_rk3399-firefly_dts b/sysutils/dtb/patches/patch-arch_arm64_boot_dts_rockchip_rk3399-firefly_dts
new file mode 100644
index 00000000000..8c0744743ed
--- /dev/null
+++ b/sysutils/dtb/patches/patch-arch_arm64_boot_dts_rockchip_rk3399-firefly_dts
@@ -0,0 +1,14 @@
+$OpenBSD: patch-arch_arm64_boot_dts_rockchip_rk3399-firefly_dts,v 1.1 2019/09/30 15:14:50 kurt Exp $
+
+Index: arch/arm64/boot/dts/rockchip/rk3399-firefly.dts
+--- arch/arm64/boot/dts/rockchip/rk3399-firefly.dts.orig
++++ arch/arm64/boot/dts/rockchip/rk3399-firefly.dts
+@@ -14,7 +14,7 @@
+ 	compatible = "firefly,firefly-rk3399", "rockchip,rk3399";
+ 
+ 	chosen {
+-		stdout-path = "serial2:1500000n8";
++		stdout-path = "serial2:115200n8";
+ 	};
+ 
+ 	backlight: backlight {
diff --git a/sysutils/dtb/patches/patch-arch_arm64_boot_dts_rockchip_rk3399-rockpro64_dts b/sysutils/dtb/patches/patch-arch_arm64_boot_dts_rockchip_rk3399-rockpro64_dts
new file mode 100644
index 00000000000..98d4cd5dbe1
--- /dev/null
+++ b/sysutils/dtb/patches/patch-arch_arm64_boot_dts_rockchip_rk3399-rockpro64_dts
@@ -0,0 +1,14 @@
+$OpenBSD: patch-arch_arm64_boot_dts_rockchip_rk3399-rockpro64_dts,v 1.1 2019/09/30 15:14:50 kurt Exp $
+
+Index: arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
+--- arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts.orig
++++ arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
+@@ -15,7 +15,7 @@
+ 	compatible = "pine64,rockpro64", "rockchip,rk3399";
+ 
+ 	chosen {
+-		stdout-path = "serial2:1500000n8";
++		stdout-path = "serial2:115200n8";
+ 	};
+ 
+ 	clkin_gmac: external-gmac-clock {