topic Re: SE050E detection issue in custom imx8mp board in Secure Authentication

SE050E detection issue in custom imx8mp board

pratham_malaviya — Fri, 03 Oct 2025 11:28:02 GMT

Hi there,

I am trying to validate the SE050E chip interfaced in our custom IMX8MP based board using the middleware example se05x_GetInfo. I have built and deployed the middleware using the application note AN13027.pdf . Since the SE is interfaced with the i2c-4 so i have modified the
static char* default_axSmDevice_name = "/dev/i2c-1";
to static char* default_axSmDevice_name = "/dev/i2c-3"; in simw top/hostlib/hostLib/platform/linux/i2c_a7.c file.

Still I am facing the error:

root@imx8mp-lpddr4-evk:~# se05x_GetInfo
App :INFO :PlugAndTrust_v04.05.00_20231201
App :INFO :Running se05x_GetInfo
App :INFO :If you want to over-ride the selection, use ENV=EX_SSS_BOOT_SSS_PORT or pass in command line arguments.
smCom :ERROR:Failed writing data (nrWritten=-1).

smCom :ERROR: - Error in I2C Write.....
smCom :ERROR:phNxpEseProto7816_SendRawFrame Error phNxpEse_WriteFrame
smCom :ERROR:TransceiveProcess Transceive send failed, going to recovery!
smCom :ERROR:phNxpEseProto7816_Open failed
smCom :ERROR: Failed to Open session
sss :ERROR:SM_I2CConnect Failed. Status 7012
App :ERROR:sss_session_open failed
App :ERROR:ex_sss_session_open Failed
App :ERROR:!ERROR! ret != 0.

I have also attached the cmake-conf.txt for cmake configuration.

Can anyone suggest if any other changes are required in the source?

Re: SE050E detection issue in custom imx8mp board

Kan_Li — Fri, 10 Oct 2025 07:03:45 GMT

Hi @pratham_malaviya ,

Did you try the i2cdetect command like below to probe the SE device on /dev/i2c-3?

i2cdetect -y -a -q 3

and you don't need to change the source code at all, just use the following command before running any demo out of MW.

export EX_SSS_BOOT_SSS_PORT=/dev/i2c-3

Hope that helps,

Have a great day,
Kan

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Re: SE050E detection issue in custom imx8mp board

pratham_malaviya — Fri, 10 Oct 2025 09:17:37 GMT

Hi @Kan_Li ,

I have tried with the given command and I am getting the output as below

root@imx8mp-lpddr4-evk:~# i2cdetect -y -a -q 3 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: 00 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 10: 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- 21 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- 55 -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 7f root@imx8mp-lpddr4-evk:~#

and by testing with Getinfo utility same error is there,

root@imx8mp-lpddr4-evk:~/simw-top_build/imx_native_se050_t1oi2c/bin# ./se05x_GetInfo App :INFO :PlugAndTrust_v04.05.00_20231201 App :INFO :Running ./se05x_GetInfo App :INFO :Using PortName='/dev/i2c-3' (ENV: EX_SSS_BOOT_SSS_PORT=/dev/i2c-3) smCom :ERROR:Failed writing data (nrWritten=-1). smCom :ERROR: - Error in I2C Write..... smCom :ERROR:phNxpEseProto7816_SendRawFrame Error phNxpEse_WriteFrame smCom :ERROR:TransceiveProcess Transceive send failed, going to recovery! smCom :ERROR:phNxpEseProto7816_Open failed smCom :ERROR: Failed to Open session sss :ERROR:SM_I2CConnect Failed. Status 7012 App :ERROR:sss_session_open failed App :ERROR:ex_sss_session_open Failed App :ERROR:!ERROR! ret != 0.

Can you please guide me to validate it?

Best Regards,

Pratham

Re: SE050E detection issue in custom imx8mp board

Kan_Li — Mon, 13 Oct 2025 06:52:52 GMT

Hi @pratham_malaviya ,

The default I2C address for SE050E is 0x48, so from your test, there is no such device on /dev/i2c-3, is there any connection issue between the host and SE050E on your board? Is it ok to have the schematics for a review?

Have a great day,
Kan