How to modify stm32mp1.c file on OpenSTLinux (Yocto approach)

[RBruè.1]

Hi, I need to edit the "stm32mp1.c" file inside the uboot sources, in particular I have to set the following change on line 413:

nb_blink = 4;	

How can I do that on OpenSTLinux (Yocto approach) ?

Where is the file and how can I maintain such edit after recompiling the images ?

Thank you

[Olivier GALLIEN]

Hi @Riccardo Bruè​ ,

Please refer to :

https://wiki.st.com/stm32mpu-ecosystem-v2/wiki/How_to_cross-compile_with_the_Distribution_Package#Modifying_the_U-Boot

Olivier

[PatrickF]

Hi,

not answering directly to your question, but changing this 'nb_blink' in this file could mean you want to remove the boot dependency to USB Type-C supply detection.

This could be done easily by commenting the following line in uboot Device Tree.

		/* st,adc_usb_pd = <&adc1 18>, <&adc1 19>; */

Regards.

[RBruè.1]

Thank you, I am now trying this solution. I've edited the DK2_A7/u-boot/stm32mp157c-dk2_a7-mx-u-boot.dtsi file.