pieeprom-2021-06-17 CM4 avoid touching PCIe - BETA

* Avoid default PCIe / XHCI probe on CM4 unless required for the
  current boot mode (USB_MSD or NVME).
* Leave PCIe RC in reset state when loading start.elf except for
  USB-MSD mode.
This commit is contained in:
Tim Gover
2021-06-18 10:16:54 +01:00
parent 4b7fcc65e9
commit cecc46f687
3 changed files with 5 additions and 0 deletions

View File

@@ -3,6 +3,11 @@
USB MSD boot also requires the firmware from Raspberry Pi OS 2020-08-20 or newer.
https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2711_bootloader_config.md
## 2021-06-17 - Avoid unnecessary PCIe probe on CM4 - BETA
* Avoid default PCIe / XHCI probe on CM4 unless required for the current boot
mode (USB_MSD or NVME).
* Leave PCIe RC in reset state when loading start.elf except for USB-MSD mode.
## 2021-06-11 - Add USB_MSD_STARTUP_DELAY option - BETA
* Minor update to BRCM SDRAM settings.
* Add USB_MSD_STARTUP_DELAY option (default 0 option). This adds a configurable