Re: [PATCH v2] dt-bindings: wireless: ath12k: allow calibration variant for WCN7850

[Ernest Van Hoecke]

On Mon, Sep 07, 2026 at 04:17:20PM +0200, Ernest Van Hoecke wrote:
> From: Ernest Van Hoecke <ernest.vanhoecke@xxxxxxxxxxx>
> 
> qcom,calibration-variant is the generic Qualcomm Wi-Fi DT property for
> selecting board-specific calibration data when the device identity alone
> is ambiguous.
> 
> Commit 06cca100ad08 ("wifi: ath12k: support calibration-variant from
> device tree") implemented support for this property in the ath12k
> driver.
> 
> WCN7850 can be used in systems where the PCI device ID and machine
> compatible are identical across product variants, or across regions with
> different regulations. For regulatory changes, the hardware description
> does not change, but the vendor-provided calibration data can differ. In
> that case neither the PCI identity nor the machine compatible can
> identify the required data, so DT needs an explicit calibration variant.
> 
> The ath10k, ath11k and ath12k WSI bindings already allow this generic
> property for the same class of board-data selection. Allow it for
> WCN7850 PCIe devices as well.
> 
> Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@xxxxxxxxxxx>
> ---
> Changes in v2:
> - Rebased
> - Updated commit message
> - Link to v1: https://lore.kernel.org/r/20260701-ath12k-calibration-variant-v1-1-d3eddaabf026@xxxxxxxxxxx
> ---
>  Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml b/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml
> index dc68dd59988f..cf3e1fd99c12 100644
> --- a/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml
> +++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml
> @@ -54,6 +54,12 @@ properties:
>    vddpcie1p8-supply:
>      description: VDD_PCIE_1P8 supply regulator handle
>  
> +  qcom,calibration-variant:
> +    $ref: /schemas/types.yaml#/definitions/string
> +    description:
> +      String to uniquely identify variant of the calibration data for designs
> +      with colliding bus and device ids
> +
>  required:
>    - compatible
>    - reg
> 
> ---
> base-commit: 1d8e73163ef933624341075f576e2f36ef9133f7
> change-id: 20260701-ath12k-calibration-variant-b7850f7ffd7c
> 
> Best regards,
> -- 
> Ernest Van Hoecke <ernest.vanhoecke@xxxxxxxxxxx>
> 

Hi,

Just a friendly ping on this since this since 06cca100ad08 ("wifi:
ath12k: support calibration-variant from device tree") has been in the
tree for a while now.

Kind regards,
Ernest