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@xxxxxx>
---
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 962ef807e286..982b043c5100 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -279,6 +279,11 @@
};
};
+/* 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 397ed3b2e121..7ba1d6da4d9d 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -204,6 +204,11 @@
status = "disabled";
};
+/* mcu_gpio0 is reserved for mcu firmware usage */
+&mcu_gpio0 {
+ status = "reserved";
+};
+
&sdhci1 {
/* SD/MMC */
vmmc-supply = <&vdd_mmc1>;
--
2.17.1
