[PATCH V3 4/5] ARM: bcm2708: add stub clock driver

@@ -1,2 +1,3 @@
 obj-y += bcm2708.o
+obj-y += clock.o
 obj-y += irq.o

@@ -22,6 +22,7 @@
 
 #include <mach/bcm2708_soc.h>
 
+#include "clock.h"
 #include "irq.h"
 
 static struct map_desc io_map __initdata = {

@@ -40,6 +41,8 @@ void __init bcm2708_init(void)
 {
 	int ret;
 
+	bcm2708_init_clocks();
+
 	ret = of_platform_populate(NULL, of_default_bus_match_table, NULL,
 				   NULL);
 	if (ret) {

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2010 Broadcom
+ *
+ * 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 <linux/clk.h>
+#include <linux/clk-private.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+
+#include "clock.h"
+
+/*
+ * These are fixed clocks (and device tree doesn't support clk!).
+ *
+ * They're probably not all root clocks and it may be possible to
+ * turn them on and off but until this is mapped out better it's
+ * the only way they can be used.
+ */
+DEFINE_CLK_FIXED_RATE(sys_pclk,   CLK_IS_ROOT, 250000000, 0);
+DEFINE_CLK_FIXED_RATE(apb_pclk,   CLK_IS_ROOT, 126000000, 0);
+DEFINE_CLK_FIXED_RATE(uart0_pclk, CLK_IS_ROOT,   3000000, 0);
+DEFINE_CLK_FIXED_RATE(uart1_pclk, CLK_IS_ROOT, 125000000, 0);
+
+static struct clk_lookup lookups[] = {
+	{ .con_id = "sys_pclk", .clk = &sys_pclk },
+	{ .con_id = "apb_pclk", .clk = &apb_pclk },
+	{ .dev_id = "20201000.uart", .clk = &uart0_pclk },
+	{ .dev_id = "20215000.uart", .clk = &uart1_pclk }
+};
+
+void __init bcm2708_init_clocks(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(lookups); i++) {
+		__clk_init(NULL, lookups[i].clk);
+		clkdev_add(&lookups[i]);
+	}
+}

@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2010 Broadcom
+ *
+ * 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
+ */
+
+#ifndef __BCM2708_CLOCK_H
+#define __BCM2708_CLOCK_H
+
+void __init bcm2708_init_clocks(void);
+
+#endif