ARM: Orion: CESA: Add support for clk

Some orion platforms support gating of the clock. If the clock exists
enable/disbale it as appropriate.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Jamie Lentin <jm@lentin.co.uk>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c
index 88a1667..b9b341f 100644
--- a/arch/arm/mach-kirkwood/common.c
+++ b/arch/arm/mach-kirkwood/common.c
@@ -87,6 +87,7 @@
 void __init kirkwood_clk_init(void)
 {
 	struct clk *runit, *ge0, *ge1, *sata0, *sata1, *usb0, *sdio;
+	struct clk *crypto;
 
 	tclk = clk_register_fixed_rate(NULL, "tclk", NULL,
 				       CLK_IS_ROOT, kirkwood_tclk);
@@ -98,7 +99,7 @@
 	sata1 = kirkwood_register_gate("sata1",  CGC_BIT_SATA1);
 	usb0 = kirkwood_register_gate("usb0",   CGC_BIT_USB0);
 	sdio = kirkwood_register_gate("sdio",   CGC_BIT_SDIO);
-	kirkwood_register_gate("crypto", CGC_BIT_CRYPTO);
+	crypto = kirkwood_register_gate("crypto", CGC_BIT_CRYPTO);
 	kirkwood_register_gate("xor0",   CGC_BIT_XOR0);
 	kirkwood_register_gate("xor1",   CGC_BIT_XOR1);
 	kirkwood_register_gate("pex0",   CGC_BIT_PEX0);
@@ -118,6 +119,7 @@
 	orion_clkdev_add(NULL, "orion-ehci.0", usb0);
 	orion_clkdev_add(NULL, "orion_nand", runit);
 	orion_clkdev_add(NULL, "mvsdio", sdio);
+	orion_clkdev_add(NULL, "mv_crypto", crypto);
 }
 
 /*****************************************************************************