[U-Boot] [PATCH 26/34] imx: ventana: add DT fixup for GW54xx compatibility with older kernels

[Tim Harvey]

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 at gateworks.com>
---
 board/gateworks/gw_ventana/gw_ventana.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/board/gateworks/gw_ventana/gw_ventana.c b/board/gateworks/gw_ventana/gw_ventana.c
index 068c726..06611b5 100644
--- a/board/gateworks/gw_ventana/gw_ventana.c
+++ b/board/gateworks/gw_ventana/gw_ventana.c
@@ -1599,6 +1599,17 @@ int ft_board_setup(void *blob, bd_t *bd)
 		    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 at 02100000/serial at 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.
 	 */
-- 
1.9.1