[POWERPC] fsl_soc: Fix get_immrbase() to use ranges, rather than reg.

Don't depend on the reg property as a way to determine the base
of the immr space.  The reg property might be defined differently for
different SoC families.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 10 insertions, 2 deletions

diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index 474cb8e22f64..f2c0988a03b8 100644
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -55,10 +55,18 @@ phys_addr_t get_immrbase(void)
         soc = of_find_node_by_type(NULL, "soc");
         if (soc) {
                 int size;
-                const void *prop = of_get_property(soc, "reg", &size);
+                u32 naddr;
+                const u32 *prop = of_get_property(soc, "#address-cells", &size);
 
+                if (prop && size == 4)
+                        naddr = *prop;
+                else
+                        naddr = 2;
+
+                prop = of_get_property(soc, "ranges", &size);
                 if (prop)
-                        immrbase = of_translate_address(soc, prop);
+                        immrbase = of_translate_address(soc, prop + naddr);
+
                 of_node_put(soc);
         }