linux-kernel - Re: [PATCH 0/8] typec: mux: Introduce support for multiple TypeC muxes

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Date:   Tue, 28 Dec 2021 13:20:10 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org
Subject: Re: [PATCH 0/8] typec: mux: Introduce support for multiple TypeC
 muxes

Hi Bjorn,

On 12/28/21 06:21, Bjorn Andersson wrote:
> This series introduces a level of indirection between the controller's view of
> a typec_mux/switch and the implementation and then expands that to support
> multiple drivers.
> 
> This is needed in order to support devices such as the Qualcomm Snapdragon 888
> HDK, which does muxing and orientation handling in the QMP (USB+DP) PHY and SBU
> muxing in the external FSA4480 chip.
> 
> Additionally integration of typec mux and switch in the QMP PHY is included in
> the series, as is the new FSA4480 driver. This is done to deal with the
> renaming of the driver-side typec_mux -> typec_mux_dev.
> 
> Bjorn Andersson (8):
>   dt-bindings: phy: qcom,qmp-usb3-dp: Add altmode/switch properties
>   phy: qcom-qmp: Register typec mux and orientation switch
>   device property: Helper to match multiple connections
>   device property: Use multi-connection matchers for single case
>   typec: mux: Introduce indirection
>   typec: mux: Allow multiple mux_devs per mux
>   dt-bindings: usb: Add binding for fcs,fsa4480
>   usb: typec: mux: Add On Semi fsa4480 driver

Thank you for your series, I will leave commenting on the
dt-bindings and typec-mux changes to others.

But what I can do is test this on an x86 device using
a pi3usb30532 mux for USB super-speed and DP-alt-mode
muxing / orientation switching.

I'm going to wait a bit with doing that till this has had
some reviews and possibly also some newer versions because
of those reviews. If you haven't received a Tested-by from me
when this looks like it is ready for merging please ping me.

Regards,

Hans


> 
>  .../bindings/phy/qcom,qmp-usb3-dp-phy.yaml    |  14 +
>  .../devicetree/bindings/usb/fcs,fsa4480.yaml  |  72 +++++
>  drivers/base/property.c                       |  83 ++++--
>  drivers/phy/qualcomm/phy-qcom-qmp.c           | 176 ++++++++++--
>  drivers/usb/typec/bus.c                       |   2 +-
>  drivers/usb/typec/mux.c                       | 257 +++++++++++++-----
>  drivers/usb/typec/mux.h                       |  12 +-
>  drivers/usb/typec/mux/Kconfig                 |   9 +
>  drivers/usb/typec/mux/Makefile                |   1 +
>  drivers/usb/typec/mux/fsa4480.c               | 220 +++++++++++++++
>  drivers/usb/typec/mux/intel_pmc_mux.c         |   8 +-
>  drivers/usb/typec/mux/pi3usb30532.c           |   8 +-
>  include/linux/property.h                      |   5 +
>  include/linux/usb/typec_mux.h                 |  22 +-
>  14 files changed, 762 insertions(+), 127 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/usb/fcs,fsa4480.yaml
>  create mode 100644 drivers/usb/typec/mux/fsa4480.c
>