[POWERPC] CPM: Change from fsl,brg-frequency to brg/clock-frequency

As suggested by David Gibson, now that we have a separate node
for the baud rate generators, it's better to use the standard
clock-frequency property than a cpm-node-level fsl,brg-frequency
property.

This patch updates existing places where fsl,brg-frequency is
used.

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

1 files changed, 14 insertions, 10 deletions

diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index d028e8da027b..30523667df4e 100644
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -73,22 +73,26 @@ static u32 brgfreq = -1;
 u32 get_brgfreq(void)
 {
         struct device_node *node;
+        const unsigned int *prop;
+        int size;
 
         if (brgfreq != -1)
                 return brgfreq;
 
-        node = of_find_compatible_node(NULL, NULL, "fsl,cpm1");
-        if (!node)
-                node = of_find_compatible_node(NULL, NULL, "fsl,cpm2");
-        if (!node)
-                node = of_find_node_by_type(NULL, "cpm");
+        node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg");
         if (node) {
-                int size;
-                const unsigned int *prop;
+                prop = of_get_property(node, "clock-frequency", &size);
+                if (prop && size == 4)
+                        brgfreq = *prop;
 
-                prop = of_get_property(node, "fsl,brg-frequency", &size);
-                if (!prop)
-                        prop = of_get_property(node, "brg-frequency", &size);
+                of_node_put(node);
+                return brgfreq;
+        }
+
+        /* Legacy device binding -- will go away when no users are left. */
+        node = of_find_node_by_type(NULL, "cpm");
+        if (node) {
+                prop = of_get_property(node, "brg-frequency", &size);
                 if (prop && size == 4)
                         brgfreq = *prop;