arm64: rockchip: dts: rk3399: Add board -u-boot.dtsi files
Devicetree files in RK3399 platform is synced from Linux, like other
platforms does. Apart from these u-boot in rk3399 would also require
some u-boot specific node like dmc.
dmc node has big chunk of DDR timing parameters which are specific
to specific board, and maintained with rk3399-sdram*.dtsi.
So, create board specific -u-boot.dtsi files and move these sdram dtsi
files accordingly. This would help of maintain u-boot specific changes
separately without touching Linux dts(i) files which indeed easy for
syncing from Linux between releases.
These board specific -u-boot.dtsi can be extendible to add more u-boot
specific nodes or properties in future.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/dts/rk3399-rock960-u-boot.dtsi b/arch/arm/dts/rk3399-rock960-u-boot.dtsi
new file mode 100644
index 0000000..5256f6d
--- /dev/null
+++ b/arch/arm/dts/rk3399-rock960-u-boot.dtsi
@@ -0,0 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Jagan Teki <jagan@amarulasolutions.com>
+ */
+
+#include "rk3399-sdram-lpddr3-2GB-1600.dtsi"