STM32mp135f cust board ddr error
hello，my custom board use the same ddr as STM32MP135F-DK board. but when I debug the example DDR_Init_A7.erro occus when verify data in address 0xc0000000 + 0x80。as show in picture.pls help me
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Resolved! multiple ADC for gpio
Hi!! I have STM31mp157C and I want to use the ADC. I am exploring the available GPIOs and have observed that some are present in both ADC1 and ADC2.For example, according to the datasheet, PA4 can be used with ADC1/ADC2.Is there any difference betwee...
ES8388 codec cannot get mclk
Dear community,I need your help.I'm using a ES8388 Codec on a custom board with STM32MP157 MPU. ES8388 codec connected on i2c1 and sai2. In the codec driver, ES8388 is in salve mode and MPU is in master mode. mclk cannot be obtained.device tree:k...
STM32MP153 Can't wake up from CStandby
Hi there, I'm using a custom STM32MP153 board with OpenSTLinux distribution (5.15.24) on it, and I have a problem with the Wake UP. I successfully set PWR gpio to wake up from low power modes. In fact, I can successfully wake from CSleep and CStop m...
STM32MP1 userspace GPIO control
Hello everyone, I was attempting to migrate my existing raspberry pi application for GPIO control to the STM32MP157 but I encountered a roadblock. I was using gpiod to drive the pins from the userspace app but the following guide:https://wiki.stmicro...
LibGPIO Chip/Line mapping to physical CN8 pins
I have a stm32mp135F-DK and I am attempting to do some GPIO control. My question is where can I find the mapping of libgpiod chip/line mapping to physical pin. I am particularly interested in the mapping to the CN8 pins as I will be wanting to read...
Use rotary encoder on stm32mp157
I'm doing a project, that I need a rotary encoder working on cortex-a7 core of stm32mp157.I met problem, my rotary encoder can not work. This is what I have done:1. In kernel menuconfig I have config: use rotary encoder as a build-in module;2. Write...
Resolved! CMD Line Disable on STM32MP131
I am using the SDMMC1 interface without an SD card, utilizing only the data lines. Therefore, the CMD line is not needed, and I have deactivated the CMD pin. However, the HAL_SDMMC library sends CMD data and expects a response from the SD card, causi...
How to enable RGB Display LTDC in U-Boot
HelloI wrote the following code to activate the display.The code below is written in kernel/stm32mp157a*.dts and u-boot/stm32mp157a*.dts.panel_rgb: panel-rgb { compatible = "panel-dpi"; label = "lcd"; power-supply = <&vdd_panel>; status =...
Clean shutdown of M4 core
Hello all,The startup of the M4 core is easy enough, echoing "start" to the state enables the core.Shutdown is also simple, echoing "stop" to halt the coprocessor. However on shutdown, peripherals such as the PWM sometimes end in a high state. For my...