ARM: Add support for MB86R0x SoCs

Signed-off-by: Matthias Weisser <weisserm@arcor.de>

1 files changed, 43 insertions, 0 deletions

diff --git a/arch/arm/cpu/arm926ejs/mb86r0x/clock.c b/arch/arm/cpu/arm926ejs/mb86r0x/clock.c
new file mode 100644
index 0000000000..70c8c8b04a
--- /dev/null
+++ b/arch/arm/cpu/arm926ejs/mb86r0x/clock.c
@@ -0,0 +1,43 @@
+/*
+ * (C) Copyright 2010
+ * Matthias Weisser <weisserm@arcor.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+
+/*
+ * Get the peripheral bus frequency depending on pll pin settings
+ */
+ulong get_bus_freq(ulong dummy)
+{
+	struct mb86r0x_crg * crg = (struct mb86r0x_crg *)
+					MB86R0x_CRG_BASE;
+	uint32_t pllmode;
+
+	pllmode = readl(&crg->crpr) & MB86R0x_CRG_CRPR_PLLMODE;
+
+	if (pllmode == MB86R0x_CRG_CRPR_PLLMODE_X20)
+		return 40000000;
+
+	return 41164767;
+}