On 6/1/20 12:47 PM, Nicolas Saenz Julienne wrote:
On Tue, 2020-05-05 at 18:26 +0200, Nicolas Saenz Julienne wrote:
Newer revisions of the RPi4 need their xHCI chip, VL805, firmware to be loaded explicitly. Earlier versions didn't need that as they where using an EEPROM for that purpose. This series takes care of setting up the relevant infrastructure and run the firmware loading routine at the right moment.
Note that this builds on top of Sylwester Nawrocki's "USB host support for Raspberry Pi 4 board" series.
Please don't forget about this series. The new 8GB RPi4 contains this HW design change and USB will not work without it. See this discussion on the downstream kernel github, where other OS/bootloaders are hitting the issue:
https://github.com/raspberrypi/firmware/issues/1402
Otherwise, the Linux version of this is already in linux-next:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/d...
We're already at 2020.07-rc3 , so unless this is a bugfix (does not look that way), this will have to wait for next release cycle. Also, it seems there was a lengthy ongoing discussion, is that already sorted out ?