83xx/fdt_support: let user specifiy FSL USB Dual-Role controller role
Linux understands "host" (default), "peripheral" and "otg" (broken).
Though, U-Boot doesn't restrict dr_mode variable to these values (think
of renames in future).
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/common/fdt_support.c b/common/fdt_support.c
index 36e1469..7507744 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -422,3 +422,28 @@
}
}
#endif
+
+#ifdef CONFIG_HAS_FSL_DR_USB
+void fdt_fixup_dr_usb(void *blob, bd_t *bd)
+{
+ char *mode;
+ const char *compat = "fsl-usb2-dr";
+ const char *prop = "dr_mode";
+ int node_offset;
+ int err;
+
+ mode = getenv("usb_dr_mode");
+ if (!mode)
+ return;
+
+ node_offset = fdt_node_offset_by_compatible(blob, 0, compat);
+ if (node_offset < 0)
+ printf("WARNING: could not find compatible node %s: %s.\n",
+ compat, fdt_strerror(node_offset));
+
+ err = fdt_setprop(blob, node_offset, prop, mode, strlen(mode) + 1);
+ if (err < 0)
+ printf("WARNING: could not set %s for %s: %s.\n",
+ prop, compat, fdt_strerror(err));
+}
+#endif /* CONFIG_HAS_FSL_DR_USB */