overlays: colibri-imx7: add uart b disable overlay

This allows for disabling the UART B in Linux freeing it for potential
M4 use.

Related-to: ELB-3520
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/overlays/colibri-imx7_disable-uart-b_overlay.dts b/overlays/colibri-imx7_disable-uart-b_overlay.dts
new file mode 100644
index 0000000..420847f
--- /dev/null
+++ b/overlays/colibri-imx7_disable-uart-b_overlay.dts
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright 2020-2021 Toradex
+ */
+
+// Disable UART2, aka UART_B on the Colibri iMX7
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "toradex,colibri-imx7d",
+		     "toradex,colibri-imx7d-emmc",
+		     "toradex,colibri-imx7s";
+};
+
+&uart2 {
+	status = "disabled";
+};