ACK: [SRU][K/Unstable][PATCH 0/4] Add USB support for the PolarFire RISC-V SoC

[Cengiz Can]

On Mon, 2022-08-29 at 15:51 +0200, Emil Renner Berthing wrote:
> [Impact]
> 
> The 5.19 kernel contains support for the PolarFire Icicle board but the USB driver is missing.
> 
> The following patches are available in Linux v6.0-rc1 and are sufficient to make USB usable on the PolarFire Icicle board. Please, apply them to the 5.19 kernel and set CONFIG_USB_MUSB_POLARFIRE_SOC=m.
> 
> 7a96b6ea90a4 ("usb: musb: Add support for PolarFire SoC's musb controller")
> https://lore.kernel.org/r/20220613114642.1615292-2-conor.dooley@microchip.com
> 
> 21cdd6a0e844 ("usb: musb: mpfs: Fix error codes in probe()")
> https://lore.kernel.org/r/YrVmLEc/FOEzNdzj@kili
> 
> 98ceba755928 ("usb: musb: mpfs: add missing clk_disable_unprepare() in mpfs_remove()"
> https://lore.kernel.org/all/YrVmLEc%2FFOEzNdzj@kili/
> 
> With this change internal USB devices are fully usable. External devices are supported with the following Jumper settings:
> 
> * J17 closed
> * J15 open
> 
> [Test Plan]
> 
> Ensure the correct jumper settings:
> 
> * J17 closed
> * J15 open
> 
> Use the SiFive Unmatched preinstalled image and install the 5.19 kernel. Try to boot on the Polarfire Icicle board.
> 
> * Run lsusb.
> * Attach a USB device to J16 (USB port beside SD-card slot)
> * Run lsusb again. The new device appears.
> 
> [Where problems could occur]
> 
> The fix only concerns a board which has been unsupported by Ubuntu yet.
> 
> In case of an incorrect fix the board might not boot or otherwise malfunction.

Acked-by: Cengiz Can <cengiz.can at canonical.com>

> 
> Conor Dooley (1):
>   usb: musb: Add support for PolarFire SoC's musb controller
> 
> Dan Carpenter (1):
>   usb: musb: mpfs: Fix error codes in probe()
> 
> Emil Renner Berthing (1):
>   UBUNTU: [Config] Enable CONFIG_USB_MUSB_POLARFIRE_SOC on riscv64
> 
> Yang Yingliang (1):
>   usb: musb: mpfs: add missing clk_disable_unprepare() in mpfs_remove()
> 
>  debian.master/config/annotations          |   1 +
>  debian.master/config/config.common.ubuntu |   1 +
>  drivers/usb/musb/Kconfig                  |  13 +-
>  drivers/usb/musb/Makefile                 |   1 +
>  drivers/usb/musb/mpfs.c                   | 269 ++++++++++++++++++++++
>  5 files changed, 284 insertions(+), 1 deletion(-)
>  create mode 100644 drivers/usb/musb/mpfs.c
> 
> -- 
> 2.36.1
> 
>