About Badzonor

Badzonor · 2024-11-24

Hello, we have trouble finding any dts example for USB dual role utilizing STPMIC1 internal boost regulator and power switches. Our design is pretty close to attached scheme (from AN5260 page 6).We need to know how to use stpmic1 linux driver to dyna...

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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Using internal STPMIC1 boost and power switch for USB dual role functionality.

STM32MP157 custom board TF-A SDMMC init failed

STM32MP157 and LPDDR3 unused MPU pin consideration

Re: BL32 does not start

Re: BL32 does not start

Re: In the Beal environment, what files are needed to generate FIP after compiling OP-TEE?

Re: BL32 does not start

Re: BL32 does not start