Re: [PATCH] ARM: dts: am5729-beagleboneai: drop unused Broadcom WiFi properties

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On Wed, May 5, 2021 at 9:04 AM Krzysztof Kozlowski
<krzysztof.kozlowski@xxxxxxxxxxxxx> wrote:
>
> The brcm,sd-head-align, brcm,sd_head_align and brcm,sd_sgentry_align are
> not used by the driver and not present in dtschema:
>
>   arch/arm/boot/dts/am5729-beagleboneai.dt.yaml: wifi@1:
>     'brcm,sd-head-align', 'brcm,sd_head_align', 'brcm,sd_sgentry_align' do not match any of the regexes: 'pinctrl-[0-9]+'
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxx>
> ---
>  arch/arm/boot/dts/am5729-beagleboneai.dts | 4 ----
>  1 file changed, 4 deletions(-)
>
> diff --git a/arch/arm/boot/dts/am5729-beagleboneai.dts b/arch/arm/boot/dts/am5729-beagleboneai.dts
> index 149cfafb90bf..d3b2e87a6266 100644
> --- a/arch/arm/boot/dts/am5729-beagleboneai.dts
> +++ b/arch/arm/boot/dts/am5729-beagleboneai.dts
> @@ -582,10 +582,6 @@ brcmf: wifi@1 {
>                 reg = <1>;
>                 compatible = "brcm,bcm4329-fmac";
>
> -               brcm,sd-head-align = <4>;
> -               brcm,sd_head_align = <4>;
> -               brcm,sd_sgentry_align = <512>;
> -
>                 interrupt-parent = <&gpio3>;
>                 interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
>                 interrupt-names = "host-wake";
> --
> 2.25.1
>

NAK, for what it is worth..

This is a plain old shitty situation, that everyone that mistakenly
chooses a BRCM based chipset in a design faces, then learns to NEVER
touch that chipset again..

These nodes have been posted before for mainline inclusion but always
get killed off:

https://lkml.org/lkml/2018/3/18/356

The TI AM57xx SDIO needs these flags for the brcmfmac driver to actually work.

I don't see the brcmfmac developers actually fixing it, as "out of
tree" work for brcmfmac is 100+ patches long:

https://www.cypress.com/documentation/software-and-drivers-archive/wifi-bt-linux-archive?source=search&cat=other

Regards,

-- 
Robert Nelson
https://rcn-ee.com/



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