Re: [PATCH v4 6/6] phy: qcom: qmp-pcie: Add Nord Gen5x16 PCIe multi-PHY support

[Shawn Guo]

On Mon, Sep 21, 2026 at 11:07:14AM +0530, Krishna Chaitanya Chundru wrote:
> Add support for the Nord Gen5x16 bifurcated QMP PCIe PHY.
> 
> Nord has a single PCIe PHY block split into four ports which can be
> used in multiple lane configurations: x16, x8+x8, x8+x4+x4 and
> x8+x4+x2+x2. The active topology is selected through the link mode
> configuration register, and the driver exposes the corresponding PHY
> instances based on that mode.
> 
> Unlike Glymur, where the PHY is initialized by firmware, Nord requires
> Linux to program the PHY registers. Add the PLL, TXRXZ, PCS and PCS
> lane initialization tables, along with the required power-up,
> power-down and soft-reset sequencing.
> 
> Add per-port and grouped PHY configurations for all supported Nord
> lane modes. Also add support for regular PHY resets in addition to the
> NOCSR reset.
> 
> Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@xxxxxxxxxxxxxxxx>

Reviewed-by: Shawn Guo <shengchao.guo@xxxxxxxxxxxxxxxx>