mbox series

[0/8] Add multiport support for DWC3 controllers

Message ID 20230310163420.7582-1-quic_kriskura@quicinc.com (mailing list archive)
Headers show
Series Add multiport support for DWC3 controllers | expand

Message

Krishna Kurapati March 10, 2023, 4:34 p.m. UTC
Currently the DWC3 driver supports only single port controller which
requires at most two PHYs ie HS and SS PHYs. There are SoCs that has
DWC3 controller with multiple ports that can operate in host mode.
Some of the port supports both SS+HS and other port supports only HS
mode.

This change primarily refactors the Phy logic in core driver to allow
multiport support with Generic Phy's.

Chananges have been tested on  QCOM SoC SA8295P which has 4 ports (2
are HS+SS capable and 2 are HS only capable).

Changes in current version:
Added DT support for first port of Teritiary USB controller on SA8540-Ride
Added support for reading port info from XHCI Extended Params registers.

Changes in RFC v4:
Added DT support for SA8295p.

Changes in RFC v3:
Incase any PHY init fails, then clear/exit the PHYs that
are already initialized.

Changes in RFC v2:
Changed dwc3_count_phys to return the number of PHY Phandles in the node.
This will be used now in dwc3_extract_num_phys to increment num_usb2_phy 
and num_usb3_phy.

Added new parameter "ss_idx" in dwc3_core_get_phy_ny_node and changed its
structure such that the first half is for HS-PHY and second half is for
SS-PHY.

In dwc3_core_get_phy, for multiport controller, only if SS-PHY phandle is
present, pass proper SS_IDX else pass -1.

Link to RFC v4: https://lore.kernel.org/all/20230115114146.12628-1-quic_kriskura@quicinc.com/
Link to RFC v3: https://lore.kernel.org/all/1654709787-23686-1-git-send-email-quic_harshq@quicinc.com/#r
Link to RFC v2: https://lore.kernel.org/all/1653560029-6937-1-git-send-email-quic_harshq@quicinc.com/#r

Krishna Kurapati (8):
  dt-bindings: usb: Add bindings for multiport properties on DWC3
    controller
  usb: dwc3: core: Access XHCI address space temporarily to read port
    info
  usb: dwc3: core: Skip setting event buffers for host only controllers
  usb: dwc3: core: Refactor PHY logic to support Multiport Controller
  usb: dwc3: qcom: Add multiport controller support for qcom wrapper
  arm64: dts: qcom: sc8280xp: Add multiport controller node for SC8280
  arm64: dts: qcom: sa8295p: Enable teritiary controller and its 4 USB
    ports
  arm64: dts: qcom: sa8540-ride: Enable first port of teritiary usb
    controller

 .../devicetree/bindings/usb/snps,dwc3.yaml    |  13 +-
 arch/arm64/boot/dts/qcom/sa8295p-adp.dts      |  47 +++
 arch/arm64/boot/dts/qcom/sa8540p-ride.dts     |  22 ++
 arch/arm64/boot/dts/qcom/sc8280xp.dtsi        |  58 +++
 drivers/usb/dwc3/core.c                       | 374 ++++++++++++++----
 drivers/usb/dwc3/core.h                       |  20 +-
 drivers/usb/dwc3/drd.c                        |  13 +-
 drivers/usb/dwc3/dwc3-qcom.c                  |  28 +-
 8 files changed, 473 insertions(+), 102 deletions(-)

Comments

Adrien Thierry March 14, 2023, 8:32 p.m. UTC | #1
Hi Krishna,

I'm unable to apply your patch series, it looks like patch 2 is malformed.
'git am' prints the following:

  Applying: dt-bindings: usb: Add bindings for multiport properties on DWC3 controller
  Applying: usb: dwc3: core: Access XHCI address space temporarily to read port info
  error: corrupt patch at line 83
  Patch failed at 0002 usb: dwc3: core: Access XHCI address space temporarily to read port info

Are you able to apply the series on your side?

Best,

Adrien
Krishna Kurapati March 15, 2023, 4:26 a.m. UTC | #2
On 3/15/2023 2:02 AM, Adrien Thierry wrote:
> Hi Krishna,
> 
> I'm unable to apply your patch series, it looks like patch 2 is malformed.
> 'git am' prints the following:
> 
>    Applying: dt-bindings: usb: Add bindings for multiport properties on DWC3 controller
>    Applying: usb: dwc3: core: Access XHCI address space temporarily to read port info
>    error: corrupt patch at line 83
>    Patch failed at 0002 usb: dwc3: core: Access XHCI address space temporarily to read port info
> 
> Are you able to apply the series on your side?
> 
> Best,
> 
> Adrien
> 
Hi Adrien,

   I rebased them last week before sending them out. Probably code got 
updated causing conflicts. I will rebase them again this week and send 
v6 addressing review comments.

Regards,
Krishna,