Editing STM32MP157F-DK2

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== Specifications ==
== Specifications ==
Core details:
Core details:
*32-bit Dual Core Cortex-A7 800MHz main processor
*32-bit Dual Core Cortex-A7 800MHz ARM chip
*32-bit Cortex-M4 coprocessor
*32-bit Cortex-M4 coprocessor
*512MiB DDR3 RAM
*512MiB DDR3 RAM
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* [https://wiki.st.com/stm32mpu/wiki/Category:STM32MP15_Discovery_kits stm32mpu wiki Category:STM32MP15 Discovery kits] re-iterates some of user manual in wiki format
* [https://wiki.st.com/stm32mpu/wiki/Category:STM32MP15_Discovery_kits stm32mpu wiki Category:STM32MP15 Discovery kits] re-iterates some of user manual in wiki format
*[https://wiki.st.com/stm32mpu/wiki/Getting_started/STM32MP1_boards/STM32MP157x-DK2 stm32mpu wiki STM32MP157x-DK2 Getting started book] is a good guide for getting set up
*[https://wiki.st.com/stm32mpu/wiki/Getting_started/STM32MP1_boards/STM32MP157x-DK2 stm32mpu wiki STM32MP157x-DK2 Getting started book] is a good guide for getting set up
Hardware files:


* [https://www.st.com/en/evaluation-tools/stm32mp157f-dk2.html#cad-resources STM32MP157F-DK2 CAD resources] has schematics and PCB files
* [https://www.st.com/en/evaluation-tools/stm32mp157f-dk2.html#cad-resources STM32MP157F-DK2 CAD resources] has schematics and PCB files
LCD documentation:
* Screen is FRD397B2509 TFT LCD
* Driver is OTM8009A
* Touch controller is FT6236
Chip documentation:
Chip documentation:


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* [https://www.st.com/en/development-tools/st-link-v2.html ST-LINK/V2 web page]
* [https://www.st.com/en/development-tools/st-link-v2.html ST-LINK/V2 web page]
* [https://www.st.com/resource/en/data_brief/st-link-slsh-v2.pdf ST-LINK/V2 data brief]
* [https://www.st.com/resource/en/data_brief/st-link-slsh-v2.pdf ST-LINK/V2 data brief]
*[https://www.orientdisplay.com/pdf/OTM8009A.pdf OTM8009A datasheet] ("confidential")
*[https://focuslcds.com/content/FT6236.pdf FT6236 datasheet] ("confidential")


*
*


== Software ==
== Firmware ==
ST's provides [https://www.st.com/content/st_com/en/products/embedded-software/mcu-mpu-embedded-software/stm32-embedded-software/stm32cube-mcu-mpu-packages/stm32cubemp1.html STM32CubeMP1] as this board's support package. It contains:
The STM32MP157F
 
* [https://github.com/STMicroelectronics/linux ST's Linux fork]
* [https://github.com/STMicroelectronics/u-boot ST's u-boot fork]
* [https://github.com/STMicroelectronics/arm-trusted-firmware ST's ARM Trusted Firmware fork]
* [https://github.com/STMicroelectronics/optee_os ST's OP-TEE fork]
* [https://github.com/STMicroelectronics/STM32CubeMP1 STM32CubeMP1]
Most of this is open source and the forks are being mainlined to the parent projects.
 
ST-Link can be used by the following software:
 
* GNU Screen or any terminal emulator for serial connections
* [https://openocd.org/ OpenOCD] for JTAG


*  
*  


== Bugs ==
== Bugs ==
Bugs we've found when porting the board to Buildroot:
TODO
 
* You need to probe the snd_soc_cs42l51_i2c module manually to get audio running
*The Wi-Fi uses a Broadcom chipset which can be a little buggy sometimes


== Pinouts ==
== Pinouts ==
See the [[STM32MP157F-DK2/40 pin pinout]] page for a textual description of the Pi header.
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