zynq: use pl310 device tree bindings

The Zynq has a PL310 L2 cache controller.  Convert in-tree uses to using
the device tree.

Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Cc: John Linn <john.linn@xilinx.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/boot/dts/zynq-ep107.dts

@@ -44,6 +44,15 @@
 			      <0xF8F00100 0x100>;
 		};
 
+		L2: cache-controller {
+			compatible = "arm,pl310-cache";
+			reg = <0xF8F02000 0x1000>;
+			arm,data-latency = <2 3 2>;
+			arm,tag-latency = <2 3 2>;
+			cache-unified;
+			cache-level = <2>;
+		};
+
 		uart0: uart@e0000000 {
 			compatible = "xlnx,xuartps";
 			reg = <0xE0000000 0x1000>;

arch/arm/mach-zynq/common.c

@@ -45,12 +45,10 @@ static struct of_device_id zynq_of_bus_ids[] __initdata = {
  */
 static void __init xilinx_init_machine(void)
 {
-#ifdef CONFIG_CACHE_L2X0
 	/*
 	 * 64KB way size, 8-way associativity, parity disabled
 	 */
-	l2x0_init(PL310_L2CC_BASE, 0x02060000, 0xF0F0FFFF);
-#endif
+	l2x0_of_init(0x02060000, 0xF0F0FFFF);
 
 	of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL);
 }
@@ -83,11 +81,6 @@ static struct map_desc io_desc[] __initdata = {
 		.pfn		= __phys_to_pfn(SCU_PERIPH_PHYS),
 		.length		= SZ_8K,
 		.type		= MT_DEVICE,
-	}, {
-		.virtual	= PL310_L2CC_VIRT,
-		.pfn		= __phys_to_pfn(PL310_L2CC_PHYS),
-		.length		= SZ_4K,
-		.type		= MT_DEVICE,
 	},
 
 #ifdef CONFIG_DEBUG_LL

arch/arm/mach-zynq/include/mach/zynq_soc.h

@@ -25,17 +25,13 @@
 #define TTC0_PHYS			0xF8001000
 #define TTC0_VIRT			TTC0_PHYS
 
-#define PL310_L2CC_PHYS			0xF8F02000
-#define PL310_L2CC_VIRT			PL310_L2CC_PHYS
-
 #define SCU_PERIPH_PHYS			0xF8F00000
 #define SCU_PERIPH_VIRT			SCU_PERIPH_PHYS
 
 /* The following are intended for the devices that are mapped early */
 
 #define TTC0_BASE			IOMEM(TTC0_VIRT)
 #define SCU_PERIPH_BASE			IOMEM(SCU_PERIPH_VIRT)
-#define PL310_L2CC_BASE			IOMEM(PL310_L2CC_VIRT)
 
 /*
  * Mandatory for CONFIG_LL_DEBUG, UART is mapped virtual = physical