[PATCH net-next v11 2/6] dt-bindings: net: pcs: add rockchip,rk3568-xpcs support

[Rob Herring (Arm)]

On Fri, 09 Oct 2026 01:51:56 +0800, Coia Prant wrote:
> Add device tree binding documentation for the Synopsys DesignWare
> XPCS integrated on the Rockchip RK3568 SoC.
> 
> The XPCS is accessed over the APB3 bus and internally connected to
> a Naneng Combo SerDes PHY.  It supports 1000BASE-X, SGMII, and
> QSGMII modes, with four MII ports.
> 
> The MII port used by the SGMII link is derived from the MAC it is
> routed to: GMAC0 uses port 0, GMAC1 uses port 1.  The port index is
> not an independent board-level configuration, so the binding does
> not describe the ports.  If a future SoC needs per-port configuration
> that cannot be derived, pcs-handle argument cells can be added then.
> 
> The CRU reset lines (SRST_XPCS*) are intentionally not described: no
> in-tree user requests them, and bring-up relies on the PD_PIPE power
> domain, the SerDes PHY and the in-IP soft reset. They can be added
> later as optional without breaking ABI.
> 
> Signed-off-by: Coia Prant <coiaprant at gmail.com>
> ---
>  .../net/pcs/rockchip,rk3568-xpcs.yaml         | 69 +++++++++++++++++++
>  1 file changed, 69 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/pcs/rockchip,rk3568-xpcs.yaml
> 

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