swahren
Posts: 149
Joined: Mon Sep 19, 2016 5:24 pm
Location: Germany

Re: Status of Raspberry Pi 4 in Mainline

Mon Jul 06, 2020 8:38 pm

Here are the upcoming Raspberry Pi specific features for Mainline Linux 5.8:
- proper USB support for Raspberry Pi 4 boards without separate VL805 EEPROM

User avatar
Gavinmc42
Posts: 4836
Joined: Wed Aug 28, 2013 3:31 am

Re: Status of Raspberry Pi 4 in Mainline

Tue Jul 07, 2020 2:13 am

How does that work if booting from SSD on USB3?
The VL805 driver wold need to be in the bootloader EEPROM?
I'm dancing on Rainbows.
Raspberries are not Apples or Oranges

swahren
Posts: 149
Joined: Mon Sep 19, 2016 5:24 pm
Location: Germany

Re: Status of Raspberry Pi 4 in Mainline

Tue Jul 07, 2020 8:30 am

Gavinmc42 wrote:
Tue Jul 07, 2020 2:13 am
How does that work if booting from SSD on USB3?
The VL805 driver wold need to be in the bootloader EEPROM?
I don't know the details, but the VideoCore cares about the VL805 and it's firmware. The kernel only needs to notify the VC about XHCI resets, because after a reset the RAM of the VL805 is cleared and the firmware lost. This is very hacky.

Return to “Linux Kernel”