Question
STM32MPU257F Stm32CubeProgrammer: Unable to reconnect the target device
Hello Experts,
Based on STM32MP257F-EV1 we have designed a custom board. For the DDR, PMIC, and eMMC we tried to follow the EV1 rooting as much as possible. There are few differences on the BOM though:
Our DDR chips are Alliance Memory AS4C1G16D4A-62BCN
Our eMMC is a Kingston EMMC32G-TS0A-01002
We have build an image that can be flashed into the EV1's eMMC without any issues.
Things go differently when we try to flash our 2 prototypes.
The first prototype stops after having properly downloaded the partition 0x3 fip-stm32mp257f:
12:15:04 : Number of partitions: 14
12:15:29 : USB speed : High Speed (480MBit/s)
12:15:29 : Manuf. ID : STMicroelectronics
12:15:29 : Product ID : DFU in HS Mode @Device ID /0x505, @Revision ID /0x2000
12:15:29 : SN : 0029002A4C4250110038344D
12:15:29 : DFU protocol: 1.1
12:15:29 : Board : --
12:15:29 : Device ID : 0x0505
12:15:36 : Start Embedded Flashing service
12:15:36 : Opening and parsing file: tf-a-stm32mp257f-tablet-mx-optee-programmer-usb.stm32
12:15:36 : Memory Programming ...
12:15:36 : File : tf-a-stm32mp257f-tablet-mx-optee-programmer-usb.stm32
12:15:36 : Size : 198.95 KB
12:15:36 : Partition ID : 0x01
12:15:36 : Download in Progress:
12:15:38 : File download complete
12:15:38 : Time elapsed during download operation: 00:00:01.946
12:15:38 : RUNNING Program ...
12:15:38 : PartID: :0x01
12:15:38 : Reconnecting the device ...
12:15:38 : USB speed : High Speed (480MBit/s)
12:15:38 : Manuf. ID : STMicroelectronics
12:15:38 : Product ID : DFU @Device ID /0x505, @Revision ID /0x0011, /STM32MP257FAI Rev.Y,
12:15:38 : SN : 0029002A4C4250110038344D
12:15:38 : DFU protocol: 1.1
12:15:38 : Board : --
12:15:38 : Device ID : 0x0505
12:15:38 : Device name : STM32MP257FAI Rev.Y
12:15:38 : Device type :
12:15:38 : Device CPU :
12:15:38 : Start operation done successfully at partition 0x01
12:15:38 : Opening and parsing file: fip-stm32mp257f-tablet-mx-ddr-optee-programmer-usb.bin
12:15:38 : Memory Programming ...
12:15:38 : File : fip-stm32mp257f-tablet-mx-ddr-optee-programmer-usb.bin
12:15:38 : Size : 29.38 KB
12:15:38 : Partition ID : 0x02
12:15:38 : Download in Progress:
12:15:38 : File download complete
12:15:38 : Time elapsed during download operation: 00:00:00.054
12:15:38 : RUNNING Program ...
12:15:38 : PartID: :0x02
12:15:39 : Reconnecting the device ...
12:15:39 : USB speed : High Speed (480MBit/s)
12:15:39 : Manuf. ID : STMicroelectronics
12:15:39 : Product ID : DFU @Device ID /0x505, @Revision ID /0x0011, /STM32MP257FAI Rev.Y,
12:15:39 : SN : 0029002A4C4250110038344D
12:15:39 : DFU protocol: 1.1
12:15:39 : Board : --
12:15:39 : Device ID : 0x0505
12:15:39 : Device name : STM32MP257FAI Rev.Y
12:15:39 : Device type :
12:15:39 : Device CPU :
12:15:39 : Start operation done successfully at partition 0x02
12:15:39 : Opening and parsing file: fip-stm32mp257f-tablet-mx-optee-programmer-usb.bin
12:15:39 : Memory Programming ...
12:15:39 : File : fip-stm32mp257f-tablet-mx-optee-programmer-usb.bin
12:15:39 : Size : 2.97 MB
12:15:39 : Partition ID : 0x03
12:15:39 : Download in Progress:
12:15:43 : File download complete
12:15:43 : Time elapsed during download operation: 00:00:03.658
12:15:43 : RUNNING Program ...
12:15:43 : PartID: :0x03
12:15:43 : Reconnecting the device ...
12:16:13 : Error: Unable to reconnect the target device: time out expired
12:16:13 : Error: Start operation failed at partition 0x03
12:16:13 : Error: TSV flashing service failed
12:16:14 : Disconnected from device.
The second prototype stops after having downloaded the partition 0x02: 
On the USB debug I have:
NOTICE: CPU: STM32MP257FAI Rev.Y
NOTICE: Model: STMicroelectronics STM32MP257F-EV1 STM32CubeMX board - openstli1
NOTICE: Reset reason: Power-on reset (por_rstn) (0x2035)
INFO: PMIC2 version = 0x11
INFO: PMIC2 product ID = 0x21
INFO: FCONF: Reading TB_FW firmware configuration file from: 0xe011000
INFO: FCONF: Reading firmware configuration information for: stm32mp_fuse
INFO: FCONF: Reading firmware configuration information for: stm32mp_io
INFO: Using USB
INFO: Instance 2
INFO: Boot used partition fsbl1
NOTICE: BL2: v2.10-stm32mp2-r2.0(debug):lts-v2.10.13-dirty(b1f57509)
NOTICE: BL2: Built : 17:10:59, Feb 14 2025
INFO: EventBuffer0: BuffArea=e03f000 DmaAddr=0e03f000 CoherentMapAddr=0xe03f0
INFO: dwc3_set_dev_speed = HighSpeed
INFO: DFU USB START...
INFO: Event: Link Status Change : ON(0)
INFO: Event: Link Status Change : Early Suspend(5)
INFO: Event: Link Status Change : L2(3)
INFO: Event: Suspend
INFO: USB Suspend mode
INFO: Event: Device Reset
INFO: Event: Device Connection Done
INFO: dwc3_get_dev_speed = HighSpeed
INFO: Event: Link Status Change : ON(0)
INFO: Event: Link Status Change : Early Suspend(5)
INFO: Event: Device Reset
INFO: Event: Device Connection Done
INFO: dwc3_get_dev_speed = HighSpeed
INFO: Event: Link Status Change : ON(0)
INFO: phase ID :2, Manifestation 0 at e007584
INFO: Send detach request
INFO: Receive DFU Detach
INFO: DFU USB STOP...
INFO: BL2: Loading image id 26
INFO: Loading image id=26 at address 0xe041000
INFO: Image id=26 loaded: 0xe041000 - 0xe048524
INFO: BL2: Doing platform setup
INFO: RAM: DDR4 32bits 700000kHz
INFO: Memory size = 0x100000000 (4096 MB)
INFO: DFU USB START...
INFO: Event: Link Status Change : ON(0)
INFO: Event: Link Status Change : Early Suspend(5)
INFO: Event: Link Status Change : L2(3)
INFO: Event: Suspend
INFO: USB Suspend mode
INFO: Event: Device Reset
INFO: Event: Device Connection Done
INFO: dwc3_get_dev_speed = HighSpeed
INFO: Event: Link Status Change : ON(0)
INFO: Event: Link Status Change : Early Suspend(5)
INFO: Event: Device Reset
INFO: Event: Device Connection Done
INFO: dwc3_get_dev_speed = HighSpeed
INFO: Event: Link Status Change : ON(0)
INFO: phase ID :3, Manifestation 1 at 872f79b2
INFO: Send detach request
INFO: Receive DFU Detach
INFO: DFU USB STOP...
INFO: BL2: Loading image id 1
INFO: Loading image id=1 at address 0xe000000
INFO: Image id=1 loaded: 0xe000000 - 0xe000326
INFO: FCONF: Reading FW_CONFIG firmware configuration file from: 0xe000000
INFO: FCONF: Reading firmware configuration information for: risaf_config
INFO: RISAF2: No configuration in DT, use default
INFO: FCONF: Reading firmware configuration information for: dyn_cfg
INFO: BL31 max size = 0x17000 (94208B)
INFO: BL2: Loading image id 3
INFO: Loading image id=3 at address 0xe000000
INFO: Image id=3 loaded: 0xe000000 - 0xe0114c1
INFO: BL2: Loading image id 19
INFO: Loading image id=19 at address 0x81fc0000
INFO: Image id=19 loaded: 0x81fc0000 - 0x81fc3aeb
INFO: BL2: Loading image id 4
INFO: Loading image id=4 at address 0x82000000
INFO: Image id=4 loaded: 0x82000000 - 0x8200001c
INFO: OPTEE ep=0x82000000
INFO: OPTEE header info:
INFO: magic=0x4554504f
INFO: version=0x2
INFO: arch=0x1
INFO: flags=0x0
INFO: nb_images=0x1
INFO: BL2: Loading image id 8
INFO: Loading image id=8 at address 0x82000000
INFO: Image id=8 loaded: 0x82000000 - 0x820fd798
INFO: BL2: Loading image id 2
INFO: Loading image id=2 at address 0x84400000
INFO: Image id=2 loaded: 0x84400000 - 0x84418860
INFO: BL2: Loading image id 5
INFO: Loading image id=5 at address 0x84000000
INFO: Image id=5 loaded: 0x84000000 - 0x841c5008
NOTICE: BL2: Booting BL31
INFO: Entry point address = 0xe000000
INFO: SPSR = 0x3cd
INFO: ARM GICv2 driver initialized
NOTICE: BL31: v2.10-stm32mp2-r2.0(debug):lts-v2.10.13-dirty(b1f57509)
NOTICE: BL31: Built : 17:10:59, Feb 14 2025
INFO: BL31: Initializing runtime services
INFO: BL31: Initializing BL32
I/TC: Early console on UART#2
I/TC:
I/TC: Embedded DTB found
I/TC: OP-TEE version: 4.0.0-dev (gcc version 13.3.0 (GCC)) #1 Fri Oct 20 18:29:4
I/TC: WARNING: This OP-TEE configuration might be insecure!
I/TC: WARNING: Please check https://optee.readthedocs.io/en/latest/architecturel
I/TC: Primary CPU initializing
I/TC: WARNING: All debug access are allowed
I/TC: Override the OTP 124: 0 to 0x18db6
I/TC: WARNING: Embeds insecure stm32mp_provisioning driver
I/TC: PMIC STPMIC REFID:2.A V1.1
I/TC: Platform stm32mp2: flavor PLATFORM_FLAVOR - DT stm32mp257f-oghji-tablet-ms
I/TC: OP-TEE ST profile: secure_and_system_services
[ 0.000000] SCP-firmware 2.13.0-intree-optee-os-4.0.0-dev
[ 0.000000]
[ 0.000000] [FWK] Module initialization complete!
I/TC: Primary CPU switching to normal world boot
INFO: BL31: Preparing for EL3 exit to normal world
INFO: Entry point address = 0x84000000
INFO: SPSR = 0x3c9
I/TC: Reserved shared memory is disabled
I/TC: Dynamic shared memory is enabled
I/TC: Normal World virtualization support is disabled
I/TC: Asynchronous notifications are enabled
U-Boot 2023.10-stm32mp-r2 (Oct 02 2023 - 14:39:59 +0000)
CPU: STM32MP257FAI Rev.Y
Model: STMicroelectronics STM32MP257F-EV1 STM32CubeMX board - openstlinux-6.6-y1
Board: stm32mp2 (st,stm32mp257f-oghji-tablet-mx)
DRAM: boot device not supported 96
4 GiB
optee optee: OP-TEE: revision 4.0 (2a5b1d12)
I/TC: Reserved shared memory is disabled
I/TC: Dynamic shared memory is enabled
I/TC: Normal World virtualization support is disabled
I/TC: Asynchronous notifications are enabled
STM32Programmer key pressed, Fastboot key pressed, entering download mode...
Core: 288 devices, 37 uclasses, devicetree: board
WDT: Started watchdog with servicing every 1000ms (32s timeout)
NAND: 0 MiB
MMC: gpio_stm32 gpio@44270000: Failed to acquire RIF access on IO GPIOD 9 @ 00
STM32 SD/MMC: 0, STM32 SD/MMC: 1
Loading Environment from nowhere... OK
In: serial
Out: serial
Err: serial
Enter fastboot!
invalid MAC address 0 in OTP 00:00:00:00:00:00
Net: No ethernet found.
dwc3-generic-wrapper usb@48300000: configured in usb2 mode
Please note:
- We have seen many threads with "Reconnecting the device ..." issues but we could not find a satisfying solution for our custom board
- After the reconnection fails, the board needs a complete power cycle OFF/ON, otherwise stm32cubeProgrammer can't detect the "USB1" anymore.
- We have tried 2 Ubuntu 24.04 PCs, and one Mac (we don't use any VM): Same behaviour.
- We use 2 different 12v power supplies to power the two prototypes.
- We tried to flash the generic openstlinuxweston-stm32mp2 image. Same conclusion: EV1 flash+runs perfects. Prototypes stops at part 0x2/0x3.
- We tried all the eMMC .tsv flashlayouts: optee, opteemin, fastboot, fastboot-opteemin. Again, same conclusion : EV1 flash+runs smoothly. Prototypes stops during flash process.
Any idea what could cause this "Unable to reconnect the target device" ?
Thank you