imx: ventana: add DT fixup for GW54xx compatibility with older kernels

Certain older kernels in use by some customers erroneously define a uart3
for GW54xx with a pinmux that conflicts with NAND. This will remove
that node to avoid such conflicts.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

diff --git a/board/gateworks/gw_ventana/gw_ventana.c b/board/gateworks/gw_ventana/gw_ventana.c
index 068c7264bb2c8302652ee6a273525938b8d154e9..06611b50e069a0b4372bb151fb376491cb93622a 100644 (file)
--- a/board/gateworks/gw_ventana/gw_ventana.c
+++ b/board/gateworks/gw_ventana/gw_ventana.c
@@ -1598,6 +1598,17 @@ int ft_board_setup(void *blob, bd_t *bd)
        fdt_setprop(blob, 0, "board", info->model,
                    strlen((const char *)info->model) + 1);
 
+       /*
+        * disable serial2 node for GW54xx for compatibility with older
+        * 3.10.x kernel that improperly had this node enabled in the DT
+        */
+       if (board_type == GW54xx) {
+               i = fdt_path_offset(blob,
+                                   "/soc/aips-bus@02100000/serial@021ec000");
+               if (i)
+                       fdt_del_node(blob, i);
+       }
+
        /*
         * disable wdog1/wdog2 nodes for GW51xx below revC to work around
         * errata causing wdog timer to be unreliable.