STM32MP257F-DK + CYW55572

[MasonPan0804]

Hi there,

We are trying to porting the linux driver of  STM32MP257F-DK + CYW55572 based on kernel 6.6.48.

1. The ST Linux SDK kernel 6.6.48 is from  https://www.st.com/en/embedded-software/stm32mp2dev.html#
2. The target board image on eMMC is from https://wiki.st.com/stm32mpu/wiki/STM32MP25_Discovery_kits_-_Starter_Package#step3

The generated 6.6.48 driver(patched) 3 ko files as the attachment but found the errors as below.

insmod ./cfg80211.ko

[17917.220084] module cfg80211: .gnu.linkonce.this_module section size must match the kernel's built struct module size at run time
insmod: ERROR: could not insert module cfg80211.ko: Invalid module format

insmod ./brcmutil.ko
[17998.345277] module brcmutil: .gnu.linkonce.this_module section size must match the kernel's built struct module size at run time
insmod: ERROR: could not insert module ./brcmutil.ko: Invalid module format

insmod ./brcmfmac.ko
[18031.322200] module brcmfmac: .gnu.linkonce.this_module section size must match the kernel's built struct module size at run time
insmod: ERROR: could not insert module ./brcmfmac.ko: Invalid module format

May I confirm why insert ko with errors or suggestions?

Thank you!

Mason

[Christophe Guibout]

Hello @MasonPan0804,

This problem happends when the kernel binary (Image.gz) and your module (*.ko) don't have the same kernel build version.

I would suggest to rebuild the whole kernel, flash both kernel image and modules into the board, reboot and test again.

BR,

Christophe

[MasonPan0804]

Hi there,

The now the 3 ko files look ok and work.
The board has on-board wifi/bt cyw43439, could we disable it and enable the microSD port to access external wifi/bt SDIO using the 3 ko files?

Mason

[Christophe Guibout]

Hello @MasonPan0804,

Yes : it has to been done through the device tree.

BR,

Christophe

[MasonPan0804]

Hi

Do you have guideline to disable or enable the device tree of wifi/bt or microSD??

Thank you!

[MasonPan0804]

Hi there, 

Should I update the device tree? do you have guideline?

Thank you!

Mason

[MasonPan0804]

Hi there,

    May I confirm how to change STM32MP257F-DK stm32mp25-pinctrl.dtsi, stm32mp257f-dk.dts?
    We would like to use sdmmc1 as SDIO wifi port, thank you!

Mason

[Christophe Guibout]

Hello @MasonPan0804 ,

Feel free to have a look into our wiki : here is the page talking about SDMMC device tree configuration : https://wiki.st.com/stm32mpu/wiki/SDMMC_device_tree_configuration.
You can also have a look into STM32CubeMx.

BR,

Christophe

[MasonPan0804]

Hi,

If I want to use sdmmc1 vddio use 1.8V, how to update the dts?

in the scmi_vddio1, i need to add below?

regulator-init-microvolt = <1800000>;
regulator-boot-on;
regulator-always-on;

Thank you!

Mason

[MasonPan0804]

Hi,

Is below correct? As I know the STM32CubeMX can not set the supply voltage of pin VDDIO_SDCARD, thank you!

707 &scmi_regu {
708 scmi_vddio1: regulator@0 {
709 regulator-min-microvolt = <1800000>;
710 regulator-max-microvolt = <1800000>;
711 regulator-init-microvolt = <1800000>;
712 regulator-boot-on;
713 regulator-always-on;
714 };

Mason