AM625: configure gpio pin as a interupt

Hello,

Please see this E2E FAQ about GPIO interrupts for Jacinto Devices: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1058595/faq-tda4vm-how-to-test-gpio-interrupts

Since this for a Jacinto device, you'll have to change it AM62x. Both devices use the same driver.

diff --git a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
index 6f102b430..d2a7a0133 100644
--- a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
@@ -174,6 +174,12 @@ sound_master: simple-audio-card,codec {
                };
        };
 
+       gpio_test: gpio_test {
+               compatible = "ti,gpio_test";
+               interrupt-parent = <&main_gpio0>;
+               interrupts = <42 IRQ_TYPE_EDGE_BOTH>;
+       };
+
        hdmi: connector {
                compatible = "hdmi-connector";
                label = "hdmi";
@@ -195,6 +201,12 @@ AM62X_IOPAD(0x1cc, PIN_OUTPUT, 0) /* (E14/E11) UART0_TXD */
                >;
        };
 
+       main_gpio0_pins_default: main-gpio0-default-pins {
+               pinctrl-single,pins = <
+                       AM62X_IOPAD(0x00ac, PIN_INPUT, 7) /* (L21) GPMC0_CSn1.GPIO0_42 */
+               >;
+       };
+
        main_i2c0_pins_default: main-i2c0-pins-default {
                pinctrl-single,pins = <
                        AM62X_IOPAD(0x1e0, PIN_INPUT_PULLUP, 0) /* (B16/E12) I2C0_SCL */
@@ -343,6 +355,11 @@ &wkup_uart0 {
        status = "reserved";
 };
 
+&main_gpio0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_gpio0_pins_default>;
+};

Anshu