arm: mvebu: Add CRS328-4C-20S-4S board
MikroTik CRS328-4C-20S-4S board has a switch chip with an integrated
Marvell Prestera 98DX3236 CPU.
This commit includes two board variants, namely the factory
default one and a Bit variant. The Bit board variant has a
bigger Macronix flash.
Add basic U-Boot, UART and SPI flash support.
Signed-off-by: Luka Kovacic <luka.kovacic@sartura.hr>
Cc: Luka Perkov <luka.perkov@sartura.hr>
Cc: Jakov Petrina <jakov.petrina@sartura.hr>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/dts/armada-xp-crs328-4c-20s-4s-u-boot.dtsi b/arch/arm/dts/armada-xp-crs328-4c-20s-4s-u-boot.dtsi
new file mode 100644
index 0000000..8576a02
--- /dev/null
+++ b/arch/arm/dts/armada-xp-crs328-4c-20s-4s-u-boot.dtsi
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+&uart0 {
+ u-boot,dm-pre-reloc;
+};
+
+&spi0 {
+ u-boot,dm-pre-reloc;
+
+ spi-flash@0 {
+ u-boot,dm-pre-reloc;
+ };
+};