Add decktrix-v1 custom PCB build target#14
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- Complete Dockerfile with all build dependencies (debootstrap, qemu-user-static) - Add docker-compose.yml for easy build orchestration with privileged mode - Add .dockerignore to exclude build outputs from Docker context - Fix debootstrap function name conflict causing infinite loop in Docker - Replace sudo calls with MAYBE_SUDO variable (skipped when running as root) - Update README with Docker build instructions
Add support for the Decktrix v1 custom PCB based on STM32MP157F with the same RAM as the Discovery Kit but different pinout and peripherals. Key pin differences from DK2 devboard (from schematics): Component | Devboard (DK2) | Decktrix PCB -------------------|----------------|------------- PMIC I2C4 SCL | PZ4 | PD12 (AF4) PMIC I2C4 SDA | PZ5 | PD13 (AF4) LCD reset | PE4 | PD11 LCD backlight | PA15 | PF6 Touch IRQ | PF2 | PG7 Touch reset | PF4 | PE10 BT UART | USART2 (PA2/3) | UART7 (PE7/8) BT shutdown | PZ6 | PB10 WiFi reset | PH4 | PE6 Changes per component: - Kernel: new decktrix-v1.dts with custom I2C4 pinctrl, Jadard display and touch with board-specific GPIOs, BT on UART7 without RTS/CTS - TF-A: decktrix-v1.dts and fw-config with I2C4 pinctrl override for STPMIC1 on PD12/PD13, same DDR/clock config as DK2 - U-Boot: decktrix-v1.dts with DSI disabled and I2C4 pinctrl override, plus u-boot.dtsi overlay for binman/DDR/clocks Usage: docker compose run build --variant decktrix --prefetch-debootstrap docker compose run build --variant decktrix --use-prefetch-debootstrap
Changes: - Jadard driver: devm_gpiod_get -> devm_gpiod_get_optional for vdd/vccio/dbg (display powered by always-on PMIC regulators) - Kernel DTS: remove vdd/vccio GPIOs from panel node, override PMIC LDO1 to 2.8V (display AVDD) and LDO6 to 1.8V (display IOVCC), disable sdmmc2/uart7 (u-blox MAYA-W166 uses SDMMC3/UART8, TBD) - I2C4 pinctrl patches for kernel, U-Boot, TFA: change default pins from PZ4/PZ5 to PD12/PD13 (decktrix PCB wiring) - TFA DTS: LDO1 at 2.8V, LDO6 at 1.8V for display power - Simplified TFA/U-Boot DTS files (pinctrl handled by patches) Display power analysis from schematics: LDO1 (pin 23) -> 2V8 rail -> display AVDD (needs 2.8V, was 1.8V) LDO6 (pin 43) -> 1V8 rail -> display IOVCC (needs 1.8V, was 1.2V) Both regulators are always-on, display powered at boot.
Instead of patching stm32mp15xx-dkx.dtsi to change LDO1/LDO6 voltages (which affects all boards), override them in the decktrix-v1.dts files. Cleaner separation - devboard config stays untouched. Also add pcb/ to .gitignore.
Fix all three I2C4 pinctrl patches to match exact source indentation. Add gzip_sdcard_img() to compress sdcard.img after build.
- scripts/gdrive-upload.sh: upload file to shared Drive folder - scripts/gdrive-auth.sh: re-authenticate when refresh token expires - AGENTS.md: document upload workflow and token refresh steps
- Build instructions (Docker, variants, commands) - Decktrix v1 board differences table - Google Drive upload usage - Full Google Cloud Console setup steps (19 steps) - Token refresh instructions
- Fix TF-A pinctrl patch: keep empty &pinctrl_z section - Update U-Boot/Linux pinctrl patches to match working board-share - Minimize Docker image: mount source dirs instead of COPY - Add build.sh wrapper script
Now repos are owned by ubuntu user instead of root
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Summary
Add
--variant decktrixbuild target for the Decktrix v1 custom PCB (STM32MP157F).Key pin differences from DK2 devboard
Changes per component
decktrix-v1.dtswith custom I2C4 pinctrl, Jadard JD9365TN display and touch with board-specific GPIOs, BT on UART7 without RTS/CTSdecktrix-v1.dtsandfw-configwith I2C4 pinctrl override for STPMIC1 on PD12/PD13, same DDR/clock config as DK2decktrix-v1.dtswith DSI disabled and I2C4 pinctrl override, plusu-boot.dtsioverlay for binman/DDR/clocksDEVICE_TREE/DTB_FILE_NAMEUsage
Tested
Full build via Docker completes successfully and produces
deploy/sdcard.img.