stm32mp157fad Kernel Phase Error Analysis

GongMinghe · ‎2026-05-21

Hi~ My board gets stuck at the kernel stage during boot. I've referred to numerous related posts but failed to resolve the issue.

The boot file versions I use are OP-TEE 4.0, U-Boot 2023.10 and Linux 6.6.116.

The official device tree I referenced is stm32mp157f-ed1.

I have attached the boot logs, hardware schematic and device tree files. Please help analyze the root cause of the problem.

stm32f7-i2c i2c@5c002000: pinctrl_select_state_full: pinctrl_config_one: err=-19

[    1.741795] arm-scmi firmware:scmi: SCMI Protocol v2.0 'ST:' Firmware version 0x0
[    1.748959] DEBUG: SCMI CLOCK PROBE STARTED! sdev name: scmi_dev.2
I/TC: SCMI-CLOCK: Reporting 34 clocks to Linux
I/TC: SCMI-FW: ETZPC ID 2 DENIED for Non-Secure world!
I/TC: SCMI-MSG: NS Request Clock ID 15 (iwdg1), ETZPC 2, Access=FAIL
I/TC: SCMI-CLK: ID 15 has no name/not found
I/TC: SCMI-FW: ETZPC ID 7 DENIED for Non-Secure world!
I/TC: SCMI-MSG: NS Request Clock ID 16 (rng1_k), ETZPC 7, Access=FAIL
I/TC: SCMI-CLK: ID 16 has no name/not found
[    1.793499] scmi-clocks: probe of scmi_dev.2 failed with error -1050650364
[    2.404687] clk: Disabling unused clocks
[    2.407399] Warning: unable to open an initial console.
[    2.416636] Freeing unused kernel image (initmem) memory: 2048K
[    2.421697] Run /init as init process
[   12.764703] platform 50000000.rcc: deferred probe pending
[   12.768728] platform soc:pinctrl@50002000: deferred probe pending
[   12.774753] platform soc:pinctrl@54004000: deferred probe pending
[   12.780888] platform 48002000.dma-router: deferred probe pending
[   12.786859] platform 48000000.dma-controller: deferred probe pending
[   12.793189] platform 48001000.dma-controller: deferred probe pending
[   12.799575] platform 58000000.dma-controller: deferred probe pending
[   12.805904] platform 40010000.serial: deferred probe pending
[   12.811539] platform 5c004000.rtc: deferred probe pending
[   12.816959] platform 5c002000.i2c: deferred probe pending
[   12.822322] platform 50028000.thermal: deferred probe pending
[   12.828078] platform stm32-cpufreq: deferred probe pending
[   12.833540] platform led: deferred probe pending
[   12.838168] platform 50001000.pwr: deferred probe pending
[   12.843540] amba 58005000.mmc: deferred probe pending
E/TC:1   Panic 'Watchdog' at core/drivers/stm32_iwdg.c:218 <stm32_iwdg_it_handler>
I/TC: Halting CPU 0

The log messages below are added by myself. RNG1 and IWDG1 can only be configured as secure peripherals in OP-TEE, so I believe these failure logs are not the cause of the boot stall.

I/TC: SCMI-CLOCK: Reporting 34 clocks to Linux
I/TC: SCMI-FW: ETZPC ID 2 DENIED for Non-Secure world!
I/TC: SCMI-MSG: NS Request Clock ID 15 (iwdg1), ETZPC 2, Access=FAIL
I/TC: SCMI-CLK: ID 15 has no name/not found
I/TC: SCMI-FW: ETZPC ID 7 DENIED for Non-Secure world!
I/TC: SCMI-MSG: NS Request Clock ID 16 (rng1_k), ETZPC 7, Access=FAIL
I/TC: SCMI-CLK: ID 16 has no name/not found

GongMinghe · ‎2026-05-21

[    1.899644] scmi-clocks: probe of scmi_dev.2 failed with error -1050650364

I wonder if the above errors lead to the boot failure. This issue has troubled me for a month and a half. I would appreciate it greatly if you could offer your help.

Ozone · ‎2026-05-21

Not that I can really help with this issue, but I think your question rather belongs into the "STM32 MPUs" subsection, not the "MCUs" one.
The MCU subsections deal solely with Cortex M devices.

Perhaps a moderator can move the thread, or you repost it.

GongMinghe · ‎2026-05-22

thank you