MIPS: Octeon: Use model string from DTB for unknown board type

Use model string from DTB for board type if the board is unknown.
This is more informative, e.g. with EdgeRouter Pro the /proc/cpuinfo
will display "ubnt,e200 (CN6120p1.1-1000-NSP)" instead of misleading
"Unsupported Board".

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: David Daney <ddaney.cavm@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12582/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 10 insertions, 2 deletions

diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c
index 09a83cd6bfe8..37ac229bebb6 100644
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -469,8 +469,16 @@ static void __init init_octeon_system_type(void)
         char const *board_type;
 
         board_type = cvmx_board_type_to_string(octeon_bootinfo->board_type);
-        if (board_type == NULL)
-                board_type = "Unsupported Board";
+        if (board_type == NULL) {
+                struct device_node *root;
+                int ret;
+
+                root = of_find_node_by_path("/");
+                ret = of_property_read_string(root, "model", &board_type);
+                of_node_put(root);
+                if (ret)
+                        board_type = "Unsupported Board";
+        }
 
         snprintf(octeon_system_type, sizeof(octeon_system_type), "%s (%s)",
                  board_type, octeon_model_get_string(read_c0_prid()));