ARM: dove: Add pcie clock support

As dove now has clock gating control ensure pcie ports grab their
clocks.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/arm/mach-dove/pcie.c b/arch/arm/mach-dove/pcie.c
index bb15b26041c..0ef4435b165 100644
--- a/arch/arm/mach-dove/pcie.c
+++ b/arch/arm/mach-dove/pcie.c
@@ -10,6 +10,7 @@
 
 #include <linux/kernel.h>
 #include <linux/pci.h>
+#include <linux/clk.h>
 #include <video/vga.h>
 #include <asm/mach/pci.h>
 #include <asm/mach/arch.h>
@@ -188,6 +189,10 @@ static void __init add_pcie_port(int index, void __iomem *base)
 
         if (orion_pcie_link_up(base)) {
                 struct pcie_port *pp = &pcie_port[num_pcie_ports++];
+                struct clk *clk = clk_get_sys("pcie", (index ? "1" : "0"));
+
+                if (!IS_ERR(clk))
+                        clk_prepare_enable(clk);
 
                 printk(KERN_INFO "link up\n");