[PATCH v3 2/2] arm64: dts: ti: k3-am642: reserve gpio in mcu domain for firmware usage

[Aswath Govindraju]

The gpio0 subsystem present in MCU domain might be used by firmware and is
not pinned out in evm/sk. Therefore, reserve it for MCU firmware.

Signed-off-by: Aswath Govindraju <a-govindraju at ti.com>
---
 arch/arm64/boot/dts/ti/k3-am642-evm.dts | 5 +++++
 arch/arm64/boot/dts/ti/k3-am642-sk.dts  | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index 9522f104d979..385d99a3bc4f 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -310,6 +310,11 @@
 	};
 };
 
+/* mcu_gpio0 is reserved for mcu firmware usage */
+&mcu_gpio0 {
+	status = "reserved";
+};
+
 &mcu_i2c0 {
 	status = "disabled";
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 3a5bee4b0b0c..282fb4185db9 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -220,6 +220,11 @@
 	status = "disabled";
 };
 
+/* mcu_gpio0 is reserved for mcu firmware usage */
+&mcu_gpio0 {
+	status = "reserved";
+};
+
 &sdhci1 {
 	/* SD/MMC */
 	vmmc-supply = <&vdd_mmc1>;
-- 
2.17.1