About KChar.1

KChar.1 · 2024-02-07

Hey there,I am trying to troubleshoot the following issue for quite some time now. I am working on an stm32mp157f based board attempting to enable a combination of stusb16xx and USB OTG . The behavior I am expecting to see is that when a usb device i...

KChar.1 · 2023-11-10

Hi there, I am working on an OSD32MP157F custom board inspired by STM32MP157F-DK and Octavo Red boards. The pinout is very similar to the stm32mp157f-dk with the main difference that the Murata LBEE5kL1BX-883 is connected to sdmmc3 instead of sdmmc2 ...

KChar.1 · 2023-11-08

Hi there, I am working on an STM32MP157F-DK2 board and an STUSB1600 with hsotg gadget support and no PD controller. I am running a buildroot image with all the necessary drivers enabled including dwc2, SystemFS etc. The gadget is working as expected...

KChar.1 · 2023-05-31

Hi there, I am working on a custom board based on OSD32MP157F. The pinout is very similar to the stm32mp157f-dk2 with the main difference that the Murata LBEE5kL1BX-883 is connected to sdmmc3 instead of sdmmc2 and that there is no ethernet peripheral...

KChar.1 · 2023-05-25

Hey there, I am working with a custom board based on an OSD32MP157F SoM. The pinout is very similar with the DK2 board with some minor differences, mainly the DSI_RESET pin. I have done several tests on STM32MP157f-dk2 boards with an eDP display that...

KChar.1 · 2024-02-23

Hey @JSala.3 , I got into a similar situation recently. I am sharing some of my observations in case you find them helpful.In my configuration stopping the gadget after you have connected and disconnected a peripheral will always cause timeouts on dw...

KChar.1 · 2024-02-23

After some time I found out that the SDA and SCL I2C lines of the stusb1600x were inverted. By correcting this in HW I was able to change data roles from the stusb160x driver or from user space with/sys/devices/platform/soc/49000000.usb-otg/usb_role/...

KChar.1 · 2024-02-23

Hey @Erwan SZYMANSKI and @NBALL , it has been a while but I was finally able to come up with a workaround based on your suggestions.On the New Apple devices issue the suggested PHY tuning indeed increases chances for successful connections at about 8...

KChar.1 · 2023-11-14

After following the dts I noticed that one of the differences between UART4 (STM0) and USART2 (STM1) was that UART4 had DMA disabled. I followed further my dts and I noticed that both DMA1 and DMA2 were both assigned to M4.&dma1 { /*sram = <&dma_...

KChar.1 · 2023-11-10

Hi @Erwan SZYMANSKI, Awesome! Thanks for this. I could not find something with a quick look but I will take a deeper look around to see whether a role exchange can be forced via sysfs. @NBALL , this is a great suggestion! Highly appreciated! I will ...

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User Activity

STM32MP1 - OTG does not switch to host for data mode

OSD32MP157F & Murata LBEE5kL1BX, troubleshooting bluetooth firmware loading.

STM32MP1/STUSB1600 - DRP to DRP negotiation guidelines (no PD controller)

Troubleshooting WLAN brcmfmac43430 firmware load failure on STM32MP1:Hardware vs Config

DRM/KMS framework on STM32MP157f without the ltdc peripheral

Re: USB Gadget does not recognize disconnect

Re: STM32MP1 - OTG does not switch to host for data mode

Re: STM32MP1/STUSB1600 - DRP to DRP negotiation guidelines (no PD controller)

Re: OSD32MP157F & Murata LBEE5kL1BX, troubleshooting bluetooth firmware loading.

Re: STM32MP1/STUSB1600 - DRP to DRP negotiation guidelines (no PD controller)