How do I start the PER clock? U-boot won't boot

[DMårt]

I never heard about the PER clock. I'm looking inside CubeMX, but I don't see any PER clock at all. I guess it's periferial clock. So how do I start it?

 

My U-boot won't boot. I guess that if PER will be like 24 MHz, then U-boot will continue. Or am I wrong?

 

D/TC:0 0 call_initcalls:40 level 6 stm32mp1_init_lp_states()
D/TC:0 0 stm32mp1_init_lp_states:230 Power configuration: shutdown to 6, suspend to 2
D/TC:0 0 call_initcalls:40 level 6 regulator_core_init()
D/TC:0 0 call_initcalls:40 level 7 stm32_rng_release()
D/TC:0 0 call_initcalls:40 level 7 regulator_core_cleanup()
D/TC:0 0 regulator_core_cleanup:916 disable usb33
D/TC:0 0 regulator_core_cleanup:916 disable reg18
D/TC:0 0 regulator_core_cleanup:916 disable reg11
D/TC:0 0 call_initcalls:40 level 7 release_probe_lists()
D/TC:0 0 call_finalcalls:59 level 1 release_external_dt()
I/TC: Primary CPU switching to normal world boot
serial_stm32 serial@40010000: pinctrl_select_state_full: uclass_get_device_by_phandle_id: err=-19


U-Boot 2022.10-stm32mp-r2 (Aug 12 2024 - 23:20:26 +0200)

optee optee: OP-TEE: revision 3.19 (e413e2ec)
D/TC:0 tee_entry_exchange_capabilities:101 Asynchronous notifications are disabled
D/TC:0 tee_entry_exchange_capabilities:110 Dynamic shared memory is enabled
D/TC:0 0 core_mmu_xlat_table_alloc:526 xlat tables used 4 / 10
D/TC:? 0 tee_ta_init_pseudo_ta_session:296 Lookup pseudo TA 7011a688-ddde-4053-a5a9-7b3c4ddf13b8
D/TC:? 0 tee_ta_init_pseudo_ta_session:309 Open device.pta
D/TC:? 0 tee_ta_init_pseudo_ta_session:326 device.pta : 7011a688-ddde-4053-a5a9-7b3c4ddf13b8
D/TC:? 0 tee_ta_close_session:451 csess 0xde04a750 id 1
D/TC:? 0 tee_ta_close_session:470 Destroy session
D/TC:? 0 tee_ta_init_pseudo_ta_session:296 Lookup pseudo TA 94cf71ad-80e6-40b5-a7c6-3dc501eb2803
D/TC:? 0 tee_ta_init_pseudo_ta_session:309 Open bsec.pta
D/TC:? 0 tee_ta_init_pseudo_ta_session:326 bsec.pta : 94cf71ad-80e6-40b5-a7c6-3dc501eb2803
D/TC:? 0 tee_ta_close_session:451 csess 0xde04a648 id 1
D/TC:? 0 tee_ta_close_session:470 Destroy session
D/TC:? 0 tee_ta_init_session_with_context:549 Re-open TA 94cf71ad-80e6-40b5-a7c6-3dc501eb2803
D/TC:? 0 tee_ta_close_session:451 csess 0xde04a540 id 1
D/TC:? 0 tee_ta_close_session:470 Destroy session
D/TC:? 0 tee_ta_init_session_with_context:549 Re-open TA 94cf71ad-80e6-40b5-a7c6-3dc501eb2803
D/TC:? 0 tee_ta_close_session:451 csess 0xde04a540 id 1
D/TC:? 0 tee_ta_close_session:470 Destroy session
CPU: STM32MP151AAC Rev.Z
Model: STMicroelectronics custom STM32CubeMX board - openstlinux-6.1-yocto-mickledore-mpu-v24.06.26
Board: stm32mp1 in trusted mode (st,stm32mp151a-stm32-computer-firmware-mx)
D/TC:? 0 tee_ta_init_session_with_context:549 Re-open TA 94cf71ad-80e6-40b5-a7c6-3dc501eb2803
D/TC:? 0 tee_ta_close_session:451 csess 0xde04a540 id 1
D/TC:? 0 tee_ta_close_session:470 Destroy session
DRAM: 512 MiB
Clocks:
- MPU : 650 MHz
- MCU : 208.878 MHz
- AXI : 266.500 MHz
- PER : 0 MHz
- DDR : 533 MHz
optee optee: OP-TEE: revision 3.19 (e413e2ec)
D/TC:0 tee_entry_exchange_capabilities:101 Asynchronous notifications are disabled
D/TC:0 tee_entry_exchange_capabilities:110 Dynamic shared memory is enabled
D/TC:? 0 tee_ta_init_session_with_context:549 Re-open TA 7011a688-ddde-4053-a5a9-7b3c4ddf13b8
D/TC:? 0 tee_ta_close_session:451 csess 0xde04a540 id 1
D/TC:? 0 tee_ta_close_session:470 Destroy session

[Erwan SZYMANSKI]

Hello @DMårt ,
Yes this is peripheral clock, you can find related information in the Reference Manual (RCC chapter).

For the CubeMX configuration, you say that the PER clock is not inside, I am a bit surprised. Can you please double check, I can see this on my side (taken with the STM32MP157F-DK2 example project) :

Kind regards,
Erwan.

[DMårt]

@Erwan SZYMANSKI 

Oh, it's called CKPER clock. Intill check. I very sure it exists for MP151.

It might be the issue, i guess.

 

I will reply later.