[U-Boot] [PATCH v6 2/3] arm64: rockchip: dts: Add initial rk3399-u-boot.dtsi file

[Jagan Teki <jagan@amarulasolutions.com>]

U-Boot always managed to use Linux devicetree files with respective
bindings, but on the other hand u-boot also has it's own u-boot
specific nodes or properties example u-boot,dm-pre-reloc which
is required for SPL_OF_CONTROL to allocate particular node.

It is always better to maintain these u-boot specific nodes and
properties into seperate dts files. This would help to sync the
devicetrees directly from Linux.

This patch is adding initial rk3399-u-boot.dtsi and move sdmmc,
spi1 u-boot,dm-pre-reloc properties into it so-that the subsequent
rk3399 boards can include the same on their board dtsi files.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 arch/arm/dts/rk3399-u-boot.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 arch/arm/dts/rk3399-u-boot.dtsi

diff --git a/arch/arm/dts/rk3399-u-boot.dtsi b/arch/arm/dts/rk3399-u-boot.dtsi
new file mode 100644
index 0000000000..0786c1193a
--- /dev/null
+++ b/arch/arm/dts/rk3399-u-boot.dtsi
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Jagan Teki <jagan@amarulasolutions.com>
+ */
+
+&sdmmc {
+	u-boot,dm-pre-reloc;
+};
+
+&spi1 {
+	u-boot,dm-pre-reloc;
+};
-- 
2.18.0.321.gffc6fa0e3