Cleanup and bug fixes.
What’s inside this release?
- Remove internal Device Tree (was unused on the Pi 4 anyway since an external one is needed by start4.elf to initialize the UARTs and other things) [tianocore/edk2-platforms@be2ed5e]
- Fix SPI and UART ACPI devices [tianocore/edk2-platforms@f12e1c0
- Fix PWM ACPI devices [tianocore/edk2-platforms@d45d873]
Those last two fixed regressions seen on Windows 10 after some ACPI restructuring to properly describe DMA constraints on VideoCore-attached devices. The regressions affected Pi 3, but the fix should equally apply to Pi 4.
As always, read the release notes and usual caveats. The notes have gotten a bit of a rinse, so have a look to clear out any old assumptions.