About Badzonor

Badzonor · 2024-07-24

Hello, we are trying to start our custom STM32MP157 board. We encountered some problems that I want to ask about. First is with TF-A, it gets to the SD card init (boot source) and it fails. We have eMMC on MMC2 and it also gives error message. NOTICE...

Badzonor · 2024-06-30

Hello,I designed custom board with STM32MP157 and LPDDR3 memory. Due to PCB manufacture restrictions I needed to connect to ground unused signal called DDR_ATO. I want to know if this is a problem, because if it is the case I can just remove 1 ball f...

Badzonor · 2024-08-13

Also, if your board still fails at the end of SP_min then I may have an idea why.You are using LPDDR2 and in that case LDO3 should be in bypass mode (if used as intended by ST) and not in sink-source mode (this is for standard DDR). LPDDR not use VTT...

Badzonor · 2024-08-13

Thank you so much for your reply. I tried but nothing changed, I really don't think that U-boot have chance to do anything at this point. I will continue testing. Thank you!

Badzonor · 2024-08-12

Hello, did you solved the issue?Thank you, Dominik.

Badzonor · 2024-08-12

Hello, I tried that, in my case ldo3 is ddr_vdd1 as I use LPDDR3 but nothing changed so far. We will keep trying.Thank you!

Badzonor · 2024-08-11

Hello, we managed to get further by switching from SP_min to OPTEE and now we have similar issue with dt_get_cpu_regulator(). You attached .dts mentioned that you solved the issue but it is hard to know that you changed when we don't have previous .d...

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STM32MP157 custom board TF-A SDMMC init failed

STM32MP157 and LPDDR3 unused MPU pin consideration

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Re: BL32 does not start

Re: BL32 does not start