Re: [PATCH 2/2] PCI: amd-mdb: Add amd,versal2-cpm6-host compatible

[Krzysztof Kozlowski <krzk@kernel.org>]

On 02/04/2026 20:00, Sai Krishna Musham wrote:
> Add "amd,versal2-cpm6-host" to the OF match table of the AMD MDB PCIe
> host controller driver.
> 
> The Versal2 CPM6 host controller is DesignWare-based and supports
> PCIe Gen6 operation at up to 64 GT/s per lane. It is currently
> handled by the same driver and match data (NULL) as the existing
> MDB host controller, but CPM6 uses a newer IP revision and differs
> in legacy INTx register offsets.
> 
> Use a separate compatible to allow CPM6-specific handling once legacy
> interrupt support is validated.
> 
> Signed-off-by: Sai Krishna Musham <sai.krishna.musham@amd.com>
> ---
>  drivers/pci/controller/dwc/pcie-amd-mdb.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/pci/controller/dwc/pcie-amd-mdb.c b/drivers/pci/controller/dwc/pcie-amd-mdb.c
> index 3c6e837465bb..325bf7aad657 100644
> --- a/drivers/pci/controller/dwc/pcie-amd-mdb.c
> +++ b/drivers/pci/controller/dwc/pcie-amd-mdb.c
> @@ -511,6 +511,9 @@ static const struct of_device_id amd_mdb_pcie_of_match[] = {
>  	{
>  		.compatible = "amd,versal2-mdb-host",
>  	},
> +	{
> +		.compatible = "amd,versal2-cpm6-host",
> +	},

So devices are fully compatible. Fix your compatibility in the binding
and drop this.

Best regards,
Krzysztof