[PATCH v9 02/10] dt-bindings: phy: Add Lynx 10G phy binding

[Rob Herring]

On Thu, 29 Dec 2022 19:01:31 -0500, Sean Anderson wrote:
> This adds a binding for the SerDes module found on QorIQ processors.
> Each phy is a subnode of the top-level device, possibly supporting
> multiple lanes and protocols. This "thick" #phy-cells is used due to
> allow for better organization of parameters. Note that the particular
> parameters necessary to select a protocol-controller/lane combination
> vary across different SoCs, and even within different SerDes on the same
> SoC.
> 
> The driver is designed to be able to completely reconfigure lanes at
> runtime. Generally, the phy consumer can select the appropriate
> protocol using set_mode.
> 
> There are two PLLs, each of which can be used as the master clock for
> each lane. Each PLL has its own reference. For the moment they are
> required, because it simplifies the driver implementation. Absent
> reference clocks can be modeled by a fixed-clock with a rate of 0.
> 
> Signed-off-by: Sean Anderson <sean.anderson at seco.com>
> ---
> 
> Changes in v9:
> - Add fsl,unused-lanes-reserved to allow for a gradual transition
>   between firmware and Linux control of the SerDes
> - Change phy-type back to fsl,type, as I was getting the error
>     '#phy-cells' is a dependency of 'phy-type'
> 
> Changes in v7:
> - Use double quotes everywhere in yaml
> 
> Changes in v6:
> - fsl,type -> phy-type
> 
> Changes in v4:
> - Use subnodes to describe lane configuration, instead of describing
>   PCCRs. This is the same style used by phy-cadence-sierra et al.
> 
> Changes in v3:
> - Manually expand yaml references
> - Add mode configuration to device tree
> 
> Changes in v2:
> - Rename to fsl,lynx-10g.yaml
> - Refer to the device in the documentation, rather than the binding
> - Move compatible first
> - Document phy cells in the description
> - Allow a value of 1 for phy-cells. This allows for compatibility with
>   the similar (but according to Ioana Ciornei different enough) lynx-28g
>   binding.
> - Remove minItems
> - Use list for clock-names
> - Fix example binding having too many cells in regs
> - Add #clock-cells. This will allow using assigned-clocks* to configure
>   the PLLs.
> - Document the structure of the compatible strings
> 
>  .../devicetree/bindings/phy/fsl,lynx-10g.yaml | 248 ++++++++++++++++++
>  1 file changed, 248 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/fsl,lynx-10g.yaml
> 

Reviewed-by: Rob Herring <robh at kernel.org>