ARM: Orion: Add clocks using the generic clk infrastructure.

Add tclk as a fixed rate clock for all platforms. In addition, on
kirkwood, add a gated clock for most of the clocks which can be gated.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Jamie Lentin <jm@lentin.co.uk>
[mturquette@linaro.org: removed redundant CLKDEV_LOOKUP from Kconfig]
[mturquette@linaro.org: removed redundant clk.h from mach-dove/common.c]
Signed-off-by: Mike Turquette <mturquette@linaro.org>

1 files changed, 16 insertions, 6 deletions

diff --git a/arch/arm/mach-dove/common.c b/arch/arm/mach-dove/common.c
index bda7aca04ca0..63fe6e612e98 100644
--- a/arch/arm/mach-dove/common.c
+++ b/arch/arm/mach-dove/common.c
@@ -13,7 +13,7 @@
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/pci.h>
-#include <linux/clk.h>
+#include <linux/clk-provider.h>
 #include <linux/ata_platform.h>
 #include <linux/gpio.h>
 #include <asm/page.h>
@@ -68,6 +68,17 @@ void __init dove_map_io(void)
 }
 
 /*****************************************************************************
+ * CLK tree
+ ****************************************************************************/
+static struct clk *tclk;
+
+static void __init clk_init(void)
+{
+        tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT,
+                                       get_tclk());
+}
+
+/*****************************************************************************
  * EHCI0
  ****************************************************************************/
 void __init dove_ehci0_init(void)
@@ -272,18 +283,17 @@ void __init dove_sdio1_init(void)
 
 void __init dove_init(void)
 {
-        int tclk;
-
-        tclk = get_tclk();
-
         printk(KERN_INFO "Dove 88AP510 SoC, ");
-        printk(KERN_INFO "TCLK = %dMHz\n", (tclk + 499999) / 1000000);
+        printk(KERN_INFO "TCLK = %dMHz\n", (get_tclk() + 499999) / 1000000);
 
 #ifdef CONFIG_CACHE_TAUROS2
         tauros2_init();
 #endif
         dove_setup_cpu_mbus();
 
+        /* Setup root of clk tree */
+        clk_init();
+
         /* internal devices that every board has */
         dove_rtc_init();
         dove_xor0_init();