ARM: CSR: call l2x0_of_init to init L2 cache of SiRFprimaII

Cc: Rob Herring <robherring2@gmail.com>
Signed-off-by: NBarry Song <Baohua.Song@csr.com>

arch/arm/boot/dts/prima2-cb.dts

@@ -39,9 +39,12 @@
 		ranges = <0x40000000 0x40000000 0x80000000>;
 
 		l2-cache-controller@80040000 {
-			compatible = "arm,pl310-cache";
+			compatible = "arm,pl310-cache", "sirf,prima2-pl310-cache";
 			reg = <0x80040000 0x1000>;
 			interrupts = <59>;
+			arm,tag-latency = <1 1 1>;
+			arm,data-latency = <1 1 1>;
+			arm,filter-ranges = <0 0x40000000>;
 		};
 
 		intc: interrupt-controller@80020000 {

arch/arm/mach-prima2/l2x0.c

@@ -8,52 +8,24 @@
 
 #include <linux/init.h>
 #include <linux/kernel.h>
-#include <linux/io.h>
-#include <linux/errno.h>
 #include <linux/of.h>
-#include <linux/of_address.h>
 #include <asm/hardware/cache-l2x0.h>
-#include <mach/memory.h>
 
-#define L2X0_ADDR_FILTERING_START       0xC00
-#define L2X0_ADDR_FILTERING_END         0xC04
-
-static struct of_device_id l2x_ids[]  = {
-	{ .compatible = "arm,pl310-cache" },
+static struct of_device_id prima2_l2x0_ids[]  = {
+	{ .compatible = "sirf,prima2-pl310-cache" },
+	{},
 };
 
-static int __init sirfsoc_of_l2x_init(void)
+static int __init sirfsoc_l2x0_init(void)
 {
 	struct device_node *np;
-	void __iomem *sirfsoc_l2x_base;
-
-	np = of_find_matching_node(NULL, l2x_ids);
-	if (!np)
-		panic("unable to find compatible l2x node in dtb\n");
-
-	sirfsoc_l2x_base = of_iomap(np, 0);
-	if (!sirfsoc_l2x_base)
-		panic("unable to map l2x cpu registers\n");
-
-	of_node_put(np);
-
-	if (!(readl_relaxed(sirfsoc_l2x_base + L2X0_CTRL) & 1)) {
-		/*
-		 * set the physical memory windows L2 cache will cover
-		 */
-		writel_relaxed(PLAT_PHYS_OFFSET + 1024 * 1024 * 1024,
-			sirfsoc_l2x_base + L2X0_ADDR_FILTERING_END);
-		writel_relaxed(PLAT_PHYS_OFFSET | 0x1,
-			sirfsoc_l2x_base + L2X0_ADDR_FILTERING_START);
 
-		writel_relaxed(0,
-			sirfsoc_l2x_base + L2X0_TAG_LATENCY_CTRL);
-		writel_relaxed(0,
-			sirfsoc_l2x_base + L2X0_DATA_LATENCY_CTRL);
+	np = of_find_matching_node(NULL, prima2_l2x0_ids);
+	if (np) {
+		pr_info("Initializing prima2 L2 cache\n");
+		return l2x0_of_init(0x40000, 0);
 	}
-	l2x0_init((void __iomem *)sirfsoc_l2x_base, 0x00040000,
-		0x00000000);
 
 	return 0;
 }
-early_initcall(sirfsoc_of_l2x_init);
+early_initcall(sirfsoc_l2x0_init);