MSCC: add support for Ocelot SoCs

This family of SoCs are found in the Microsemi Switches solution and have
already a support in the linux kernel.

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
diff --git a/arch/mips/mach-mscc/include/mach/common.h b/arch/mips/mach-mscc/include/mach/common.h
new file mode 100644
index 0000000..842462a
--- /dev/null
+++ b/arch/mips/mach-mscc/include/mach/common.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
+/*
+ * Copyright (c) 2018 Microsemi Corporation
+ */
+
+#ifndef __ASM_MACH_COMMON_H
+#define __ASM_MACH_COMMON_H
+
+#if defined(CONFIG_SOC_OCELOT)
+#include <mach/ocelot/ocelot.h>
+#include <mach/ocelot/ocelot_devcpu_gcb.h>
+#include <mach/ocelot/ocelot_icpu_cfg.h>
+#else
+#error Unsupported platform
+#endif
+
+#define MSCC_DDR_TO	0x20000000	/* DDR RAM base offset */
+#define MSCC_MEMCTL1_TO	0x40000000	/* SPI/PI base offset */
+#define MSCC_MEMCTL2_TO	0x50000000	/* SPI/PI base offset */
+#define MSCC_FLASH_TO	MSCC_MEMCTL1_TO	/* Flash base offset */
+
+#define VCOREIII_TIMER_DIVIDER 25	/* Clock tick ~ 0.1 us */
+
+#endif				/* __ASM_MACH_COMMON_H */