** Description changed:
+ [Impact]
+
+ USB on the Pi 4B rev 1.4 running the raspi 5.3 kernel is non-functional.
+
+ [Test Case]
+
+ See original description below.
+
+ [Regression Potential]
+
+ Low. The changes are isolated to the PCIe driver used for the Raspberry
+ Pi. The commit is a clean cherry-pick from the raspi 5.4 kernel.
+
+ [Original Description]
+
On the Pi 4 board revision 1.4 (of which the 8Gb model is currently the
main example), the VL805 USB controller doesn't appear to be recognized
by the 5.3 kernel. To reproduce:
* Flash a current bionic image (e.g.
http://cdimage.ubuntu.com/releases/bionic/release/ubuntu-18.04.4-preinstalled-server-arm64+raspi4.img.xz)
* Boot the card on an older Pi model (3, 4 rev 1.2, etc.)
* sudo add-apt-repository ppa:waveform/firmware
* sudo apt install linux-firmware-raspi2 (the rev 1.4 requires a newer
firmware package to boot; this PPA contains a test package with a back-ported
firmware)
* Boot the card on a Pi 4 rev 1.4
* Observe USB2 and USB3 ports do not work
* Boot the card on an older Pi 4 rev 1.2
* Observe USB2 and USB3 ports do work
** Changed in: linux-raspi2 (Ubuntu Bionic)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1887156
Title:
USB ports not working on the Pi 4 rev 1.4 board
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