Subject: Re: [PATCH 1/2] dt-binding: bcm43xx-fmac: add optional brcm,ccode-map

From: Kalle Valo <[email-masked]>
Date: Sun, 11 Apr 2021 10:57:54 +0300

Shawn Guo <[email-masked]> writes:

> Add optional brcm,ccode-map property to support translation from ISO3166
> country code to brcmfmac firmware country code and revision.
>
> Signed-off-by: Shawn Guo <[email-masked]>
> ---
>  .../devicetree/bindings/net/wireless/brcm,bcm43xx-fmac.txt | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/net/wireless/brcm,bcm43xx-fmac.txt b/Documentation/devicetree/bindings/net/wireless/brcm,bcm43xx-fmac.txt
> index cffb2d6876e3..a65ac4384c04 100644
> --- a/Documentation/devicetree/bindings/net/wireless/brcm,bcm43xx-fmac.txt
> +++ b/Documentation/devicetree/bindings/net/wireless/brcm,bcm43xx-fmac.txt
> @@ -15,6 +15,12 @@ Optional properties:
>  	When not specified the device will use in-band SDIO interrupts.
>   - interrupt-names : name of the out-of-band interrupt, which must be set
>  	to "host-wake".
> + - brcm,ccode-map : multiple strings for translating ISO3166 country code to
> +	brcmfmac firmware country code and revision.  Each string must be in
> +	format "AA-BB-num" where:
> +	  AA is the ISO3166 country code which must be 2 characters.
> +	  BB is the firmware country code which must be 2 characters.
> +	  num is the revision number which must fit into signed integer.
>  
>  Example:
>  
> @@ -34,5 +40,6 @@ mmc3: mmc@1c12000 {
>  		interrupt-parent = <&pio>;
>  		interrupts = <10 8>; /* PH10 / EINT10 */
>  		interrupt-names = "host-wake";
> +		brcm,ccode-map = "JP-JP-78", "US-Q2-86";

The commit log does not answer "Why?". Why this needs to be in device
tree and, for example, not hard coded in the driver?

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