1 files changed, 20 insertions, 0 deletions

diff --git a/arch/powerpc/boot/devtree.c b/arch/powerpc/boot/devtree.c
index 60f561e307a9..5d12336dc360 100644
--- a/arch/powerpc/boot/devtree.c
+++ b/arch/powerpc/boot/devtree.c
@@ -350,3 +350,23 @@ int dt_is_compatible(void *node, const char *compat)
 
         return 0;
 }
+
+int dt_get_virtual_reg(void *node, void **addr, int nres)
+{
+        unsigned long xaddr;
+        int n;
+
+        n = getprop(node, "virtual-reg", addr, nres * 4);
+        if (n > 0)
+                return n / 4;
+
+        for (n = 0; n < nres; n++) {
+                if (!dt_xlate_reg(node, n, &xaddr, NULL))
+                        break;
+
+                addr[n] = (void *)xaddr;
+        }
+
+        return n;
+}
+