Re: [PATCH v5 1/3] dt-bindings: phy: qcom,sc8280xp-qmp-usb43dp-phy: Document lanes mapping when not using in USB-C complex

["Rob Herring (Arm)" <robh@kernel.org>]

On Mon, 06 Oct 2025 15:55:03 +0200, Neil Armstrong wrote:
> The QMP USB3/DP Combo PHY hosts an USB3 phy and a DP PHY on top
> of a combo glue to route either lanes to the 4 shared physical lanes.
> 
> The routing of the lanes can be:
> - 2 DP + 2 USB3
> - 4 DP
> - 2 USB3
> 
> The layout of the lanes was designed to be mapped and swapped
> related to the USB-C Power Delivery negociation, so it supports
> a finite set of mappings inherited by the USB-C Altmode layouts.
> 
> Nevertheless those QMP Comby PHY can be used to drive a DisplayPort
> connector, DP->HDMI bridge, USB3 A Connector, etc... without
> an USB-C connector and no PD events.
> 
> Document the data-lanes on numbered port@0 out endpoints,
> allowing us to document the lanes mapping to DisplayPort
> and/or USB3 connectors/peripherals.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
> ---
>  .../phy/qcom,sc8280xp-qmp-usb43dp-phy.yaml         | 69 +++++++++++++++++++++-
>  1 file changed, 68 insertions(+), 1 deletion(-)
> 

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>