SK-AM62A-LP: SysConfig Pinmuxing procedure

Hello, Andreas and thank you for this information. Yes it help me but for the kernel/dtb compilation there is an issue in your documentation about the compilator to use. In the SDK 9_00_00_08 we can found aarch64-oe-linux-gcc (not aarch64-none-linux-gnu) in /ti-processor-sdk-linux-edgeai-am62axx-evm-09_00_00_08/linux-devkit/sysroots/x86_64-arago-linux/usr/bin/aarch64-oe-linux.

In your doc you write this to build the dts :

make ARCH=arm64 CROSS_COMPILE=aarch64-none-linux-gnu- dtbs

This cause an issue ...

Hi,

I found an issue with my pinmux config. I need to go to gpio to configure GPIO0_71 in mode 7 (not in MMC2).

This configure DTSI like this

/* This file was auto-generated by TI PinMux on 20/09/2023 at 18:13:42. */
/* This file should only be used as a reference. Some pins/peripherals, */
/* depending on your use case, may need additional configuration. */


&main_pmx0 {
    wlan_en_pins_default: wlan_en-pins-default {
        pinctrl-single,pins = <
            AM62AX_IOPAD(0x0124, PIN_INPUT, 7) /* (F22) MMC2_SDCD.GPIO0_71 */
        >;
    };
};

now go to sdk and change k3-am62a7-sk.dts rebuild the dtb file

Do i need to add more change in this file or another ?

Replace the dtb file in the sdcard (rootfs/boot/dtb).

Reboot the card and try to change it's stata with gpiolib with

gpioset gpiochip2 71=1

or

gpioset gpiochip2 71=0

But can't see any change on the card with a scope.
I put my probe on R12 and i always see 1.4V ... i can just change R12 voltage to zero if i put WL_LT_EN to low with

gpioset gpiochip0 8=0

Hi Mickael,

I'm not able to get back to this right away but let me try to find somebody that can. Thanks for your patience.

Regards, Andreas

Hi Anshu,

This is how i change the k3-am62a7-sk.dts file

index 1081fa6a1dd5..34f19734e49b 100644
--- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
@@ -416,6 +416,11 @@
                        AM62AX_IOPAD(0x008, PIN_INPUT, 0) /* (J24) OSPI0_DQS */
                >;
        };
+       wlan_en_pins_default: wlan_en-pins-default {
+               pinctrl-single,pins = <
+                       AM62AX_IOPAD(0x0124, PIN_OUTPUT_PULLUP, 7) /* (F22) MMC2_SDCD.GPIO0_71 */
+               >;
+       };
 };
 
 &mcu_pmx0 {
@@ -640,6 +645,8 @@
 };
 
 &main_gpio0 {
+       pinctrl-names = "default";
+    pinctrl-0 = <&wlan_en_pins_default>;
        status = "okay";

I builded the dtb file and copied it to the target in /boot/dtb/ti/.

Now i can drive the pin ! thanks

A question, why i can't see the gpio config with gpioinfo

Pin 71