[PATCH v6 0/4] usb: xhci: Load Raspberry Pi 4 VL805's firmware

[Matthias Brugger]

On 29/06/2020 18:37, 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.
> 
> This also depends on a DT/bindings patch available on the linux-mailing lists:
> https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg2205783.html
> 
> Here is the relevant bit for reference/discussion:
> 
>          &pcie0 {
>                 pci at 1,0 {
>                         #address-cells = <3>;
>                         #size-cells = <2>;
>                         ranges;
> 
>                         reg = <0 0 0 0 0>;
> 
>                         usb at 1,0 {
>                                 reg = <0x10000 0 0 0 0>;
>                                 resets = <&reset RASPBERRYPI_FIRMWARE_RESET_ID_USB>;
>                         };
>                 };
>          };
> 
> ---
> 
> Changes since v5:
>   - Properly handle !CONFIG_IS_ENABLED(DM_RESET) in xchi code
> 
> Changes since v4:
>   - Correct DT PCI topology, I separated the root bridge and controller
>     DT nodes
>   - Get rid of PCI core patch as not needed with correct DT PCI topology
>   - Move reset support to xchi core
> 
> Changes since v3:
>   - Use reset controller
> 
> Changes since v2:
>   - Correct comment on patch #1
>   - Address Matthias' comments
> 
> Changes since v1:
>   - Rename function
>   - Use callback in xhci-pci.c
> 
> Nicolas Saenz Julienne (4):
>    arm: rpi: Add function to trigger VL805's firmware load
>    reset: Add Raspberry Pi 4 firmware reset controller
>    configs: Enable support for reset controllers on RPi4
>    usb: xhci: Add reset controller support

Applied now to rpi-next

Thanks!

> 
>   arch/arm/mach-bcm283x/include/mach/mbox.h     | 13 ++++
>   arch/arm/mach-bcm283x/include/mach/msg.h      |  7 +++
>   arch/arm/mach-bcm283x/msg.c                   | 46 ++++++++++++++
>   configs/rpi_4_32b_defconfig                   |  1 +
>   configs/rpi_4_defconfig                       |  1 +
>   configs/rpi_arm64_defconfig                   |  1 +
>   drivers/reset/Kconfig                         | 10 ++++
>   drivers/reset/Makefile                        |  1 +
>   drivers/reset/reset-raspberrypi.c             | 60 +++++++++++++++++++
>   drivers/usb/host/xhci-mem.c                   |  2 +
>   drivers/usb/host/xhci.c                       | 33 ++++++++++
>   .../reset/raspberrypi,firmware-reset.h        | 13 ++++
>   include/usb/xhci.h                            |  2 +
>   13 files changed, 190 insertions(+)
>   create mode 100644 drivers/reset/reset-raspberrypi.c
>   create mode 100644 include/dt-bindings/reset/raspberrypi,firmware-reset.h
>