[PATCH] arm64: dts: rockchip: add support for device tree overlays for Radxa devices

[FUKAUMI Naoki]

since Radxa devices use device tree overlays[1][2][3], make base .dts
support them.

[1] arch/arm64/boot/dts/rockchip/rk3588-rock-5b-pcie-ep.dtso
[2] arch/arm64/boot/dts/rockchip/rk3588-rock-5b-pcie-srns.dtso
[3] https://github.com/radxa-pkg/radxa-overlays

Signed-off-by: FUKAUMI Naoki <naoki at radxa.com>
---
 arch/arm64/boot/dts/rockchip/Makefile | 28 +++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index 86cc418a2255..cac3f39af82a 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -1,4 +1,32 @@
 # SPDX-License-Identifier: GPL-2.0
+
+# Enables support for device tree overlays for Radxa devices
+DTC_FLAGS_rk3308-rock-pi-s := -@
+DTC_FLAGS_rk3308-rock-s0 := -@
+DTC_FLAGS_rk3328-rock-pi-e := -@
+DTC_FLAGS_rk3399-rock-4c-plus := -@
+DTC_FLAGS_rk3399-rock-4se := -@
+DTC_FLAGS_rk3399-rock-pi-4a-plus := -@
+DTC_FLAGS_rk3399-rock-pi-4a := -@
+DTC_FLAGS_rk3399-rock-pi-4b-plus := -@
+DTC_FLAGS_rk3399-rock-pi-4b := -@
+DTC_FLAGS_rk3399-rock-pi-4c := -@
+DTC_FLAGS_rk3399pro-rock-pi-n10 := -@
+DTC_FLAGS_rk3528-radxa-e20c := -@
+DTC_FLAGS_rk3566-radxa-cm3-io := -@
+DTC_FLAGS_rk3566-radxa-cm3.dtsi := -@
+DTC_FLAGS_rk3566-radxa-zero-3e := -@
+DTC_FLAGS_rk3566-radxa-zero-3w := -@
+DTC_FLAGS_rk3566-rock-3c := -@
+DTC_FLAGS_rk3568-radxa-cm3i.dtsi := -@
+DTC_FLAGS_rk3568-radxa-e25 := -@
+DTC_FLAGS_rk3568-rock-3a := -@
+DTC_FLAGS_rk3568-rock-3b := -@
+DTC_FLAGS_rk3588-rock-5-itx := -@
+DTC_FLAGS_rk3588-rock-5b := -@
+DTC_FLAGS_rk3588s-rock-5a := -@
+DTC_FLAGS_rk3588s-rock-5c := -@
+
 dtb-$(CONFIG_ARCH_ROCKCHIP) += px30-evb.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += px30-engicam-px30-core-ctouch2.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += px30-engicam-px30-core-ctouch2-of10.dtb
-- 
2.43.0