[PATCH v3 15/15] ARM: vexpress/dcscb: probe via device tree

[Nicolas Pitre]

This allows for the DCSCB support to be compiled in and selected
at run time.

Signed-off-by: Nicolas Pitre <nico at linaro.org>
---
 arch/arm/mach-vexpress/dcscb.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-vexpress/dcscb.c b/arch/arm/mach-vexpress/dcscb.c
index 58051ffafb..a724507cbc 100644
--- a/arch/arm/mach-vexpress/dcscb.c
+++ b/arch/arm/mach-vexpress/dcscb.c
@@ -14,6 +14,7 @@
 #include <linux/io.h>
 #include <linux/spinlock.h>
 #include <linux/errno.h>
+#include <linux/of_address.h>
 #include <linux/vexpress.h>
 #include <linux/arm-cci.h>
 
@@ -24,8 +25,6 @@
 #include <asm/cp15.h>
 
 
-#define DCSCB_PHYS_BASE	0x60000000
-
 #define RST_HOLD0	0x0
 #define RST_HOLD1	0x4
 #define SYS_SWRESET	0x8
@@ -215,10 +214,14 @@ extern void dcscb_power_up_setup(unsigned int affinity_level);
 
 static int __init dcscb_init(void)
 {
+	struct device_node *node;
 	unsigned int cfg;
 	int ret;
 
-	dcscb_base = ioremap(DCSCB_PHYS_BASE, 0x1000);
+	node = of_find_compatible_node(NULL, NULL, "arm,dcscb");
+	if (!node)
+		return -ENODEV;
+	dcscb_base= of_iomap(node, 0);
 	if (!dcscb_base)
 		return -EADDRNOTAVAIL;
 	cfg = readl_relaxed(dcscb_base + DCS_CFG_R);
-- 
1.8.1.2