Re: [PATCH 0/3] ARM: dts: bcm2711-rpi-cm4-io: Enable xHCI host

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Cyril,

Am 27.11.23 um 01:34 schrieb Cyril Brulebois:
Hi Stefan,

Stefan Wahren <wahrenst@xxxxxxx> (2023-11-26):
In contrast to the Raspberry Pi 4, the Compute Module 4 or the IO board
does not have a VL805 USB 3.0 host controller, which is connected via
PCIe. Instead, the BCM2711 on the Compute Module provides the built-in
xHCI.

Stefan Wahren (3):
   dt-bindings: usb: xhci: Add optional power-domains
   ARM: dts: bcm2711: Add generic xHCI
   ARM: dts: bcm2711-rpi-cm4-io: Enable xHCI host

  Documentation/devicetree/bindings/usb/generic-xhci.yaml | 3 +++
  arch/arm/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts       | 9 ++++++++-
  arch/arm/boot/dts/broadcom/bcm2711-rpi.dtsi             | 5 +++++
  arch/arm/boot/dts/broadcom/bcm2711.dtsi                 | 9 +++++++++
  4 files changed, 25 insertions(+), 1 deletion(-)
I've tried applying this series on top of v6.6-15365-g305230142ae0 (the
base commit for Jim's v8 patch series regarding PCIe/clkreq[1]), since I
know the unpatched kernel is working fine with a CM4 Lite if there's no
PCIe hardware plugged in.

  1. https://lore.kernel.org/all/20231113185607.1756-1-james.quinlan@xxxxxxxxxxxx/

With those patches applied, on the following hardware setup:
  - CM4 Lite (and SD card)
  - CM4 IO Board
  - Ethernet
  - HDMI
  - Serial console

(But neither USB storage or USB keyboard.)

I'm seeing various failure modes, but basically the system no longer
boots. I'm a little short on time right now, but if the following
excerpts aren't sufficient I can adjust logging to capture a full
trace for one or more of those.

This seems like a showstopper on its own, but if you'd like me to try
with an eMMC-equipped CM4, I can do that as well.
...

     [    3.118407] xhci-hcd fe9c0000.usb: xHCI Host Controller
     [    3.123745] xhci-hcd fe9c0000.usb: new USB bus registered, assigned bus number 1
     [    4.172083] ------------[ cut here ]------------
     [    4.176768] Firmware transaction timeout
     [    4.176825] WARNING: CPU: 2 PID: 143 at drivers/firmware/raspberrypi.c:64 rpi_firmware_property_list+0x250/0x270
     [    4.191121] Modules linked in: xhci_plat_hcd(+) xhci_hcd genet(+) mdio_bcm_unimac crct10dif_ce reset_raspberrypi crct10dif_common of_mdio usbcore i2c_bcm2835 sdhci_iproc fixed_phy fwnode_mdio usb_common sdhci_pltfm libphy fixed gpio_regulator sdhci phy_generic
     [    4.214527] CPU: 2 PID: 143 Comm: kworker/2:2 Not tainted 6.6.0+ #1
     [    4.220880] Hardware name: Raspberry Pi Compute Module 4 Rev 1.0 (DT)

thanks for testing. Are you absolutely sure that you are using
bcm2711-rpi-cm4-io.dtb from the mainline tree?

I would expect the following hardware name: Raspberry Pi Compute Module
4 IO Board

Be aware the arm files has been moved into a broadcom subdirectory.






[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]


  Powered by Linux