Re: [PATCH v2 0/4] usb: dwc3: xilinx: Add Versal2 MMI USB 3.2 controller support

[Thinh Nguyen]

On Tue, Mar 31, 2026, Radhey Shyam Pandey wrote:
> This series introduces support for the Multi-Media Integrated (MMI) USB
> 3.2 Dual-Role Device (DRD) controller on Xilinx Versal2 platforms.
> 
> The controller supports SSP(10-Gbps), SuperSpeed, high-speed, full-speed
> and low-speed operation modes.
> 
> USB2 and USB3 PHY support Physical connectivity via the Type-C
> connectivity. DWC3 wrapper IP IO space is in SLCR so reg is made
> optional.
> 
> The driver is required for the clock, reset and platform specific
> initialization (coherency/TX_DEEMPH etc). In this initial version typec
> reversibility is not implemented and it is assumed that USB3 PHY TCA mux
> programming is done by MMI configuration data object (CDOs) and TI PD
> controller is configured using external tiva programmer on VEK385
> evaluation board.
> 
> Changes for v2:
> - DT binding: fix MHz spacing (SI convention), reorder description
>   before $ref in xlnx,usb-syscon, restore zynqmp-dwc3 example and add
>   versal2-mmi-dwc3 example, fix node name for no-reg case, use 1/1
>   address/size configuration and lowercase hex in syscon offsets.
> - Split config struct refactoring (device_get_match_data,dwc3_xlnx_config)
>   into a separate preparatory patch.
> - Fix error message capitalization to lowercase per kernel convention.
> - Rename property snps,lcsr_tx_deemph to snps,lcsr-tx-deemph (hyphens).
> - Fix double space in comment and missing blank line in core.h.
> - Use platform data instead of of_device_is_compatible() check for
>   deemphasis support.
> 
> Link: https://urldefense.com/v3/__https://lore.kernel.org/all/20251119193036.2666877-1-radhey.shyam.pandey@xxxxxxx/__;!!A4F2R9G_pg!YSeyY-bpQrMLqswAc1cWND5CSHvGFygPGMEMpR9amrRMnRFjYrFZktzbLzEzVZcQmOW34IUAfwRKHwy7B8p_ciUorWGJsA$ 
> 
> Radhey Shyam Pandey (4):
>   dt-bindings: usb: dwc3-xilinx: Add MMI USB support on Versal Gen2
>     platform
>   usb: dwc3: xilinx: Introduce dwc3_xlnx_config for per-platform data
>   usb: dwc3: xilinx: Add Versal2 MMI USB 3.2 controller support
>   usb: dwc3: xilinx: Add support to program MMI USB TX deemphasis
> 
>  .../devicetree/bindings/usb/dwc3-xilinx.yaml  | 70 ++++++++++++++-
>  drivers/usb/dwc3/core.c                       | 17 ++++
>  drivers/usb/dwc3/core.h                       |  8 ++
>  drivers/usb/dwc3/dwc3-xilinx.c                | 89 +++++++++++++++----
>  4 files changed, 166 insertions(+), 18 deletions(-)
> 
> 
> base-commit: 46b513250491a7bfc97d98791dbe6a10bcc8129d
> -- 
> 2.43.0
> 

Hi Radhey,

Do you have plans to convert dwc3-xilinx to using the new flatten model?
The change you have here fits better for the new glue model.

BR,
Thinh