arm: mvebu: Add CRS305-1G-4S Bit board
MikroTik CRS305-1G-4S Bit board has a switch chip with an integrated
Marvell Prestera 98DX3236 CPU.
The Bit board variant is added, which has a bigger Macronix flash.
Add basic U-Boot, UART and Winbond 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-crs305-1g-4s-bit.dts b/arch/arm/dts/armada-xp-crs305-1g-4s-bit.dts
new file mode 100644
index 0000000..059bf48
--- /dev/null
+++ b/arch/arm/dts/armada-xp-crs305-1g-4s-bit.dts
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Device Tree file for MikroTik CRS305-1G-4S+ Bit board
+ *
+ * Copyright (C) 2020 Sartura Ltd.
+ * Author: Luka Kovacic <luka.kovacic@sartura.hr>
+ */
+
+#include "armada-xp-crs305-1g-4s.dtsi"
+
+/ {
+ model = "MikroTik CRS305-1G-4S+ Bit";
+};
+
+&spi0 {
+ status = "okay";
+
+ spi-flash@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "spi-flash", "jedec,spi-nor";
+ reg = <0>; /* Chip select 0 */
+ spi-max-frequency = <108000000>;
+ m25p,fast-read;
+
+ partition@u-boot {
+ reg = <0x00000000 0x001f0000>;
+ label = "u-boot";
+ };
+ partition@u-boot-env {
+ reg = <0x001f0000 0x00010000>;
+ label = "u-boot-env";
+ };
+ partition@ubi1 {
+ reg = <0x00200000 0x03f00000>;
+ label = "ubi1";
+ };
+ partition@ubi2 {
+ reg = <0x04100000 0x03f00000>;
+ label = "ubi2";
+ };
+ };
+};