29 Apr
2020
29 Apr
'20
8:51 a.m.
Hi Nicolas,
On Wed, Apr 29, 2020 at 1:45 AM Nicolas Saenz Julienne nsaenzjulienne@suse.de wrote:
When needed, RPi4's co-processor (called VideoCore) has to be instructed to load VL805's firmware (the chip providing xHCI support). VideCore's firmware expects the board's PCIe bus to be already configured in order for it to load the xHCI chip firmware. So we have to make sure this happens in between the PCIe configuration and xHCI startup.
I am a little bit confused. I thought we already solved the xHCI driver issuw on RPi4. What's this firmware used for?
Signed-off-by: Nicolas Saenz Julienne nsaenzjulienne@suse.de
drivers/usb/host/xhci-pci.c | 6 ++++++ 1 file changed, 6 insertions(+)
Regards, Bin