linux-kernel - Re: [PATCH] arm64: dts: meson: vim2: enable highspeed on wifi sdio

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Date:   Thu, 29 Apr 2021 11:11:27 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Art Nikpal <email2tema@...il.com>
Cc:     linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>
Subject: Re: [PATCH] arm64: dts: meson: vim2: enable highspeed on wifi sdio

Hi Art,

So you think you can test this patch to see if it breaks SDIO ?

Neil

On 29/04/2021 10:54, Jerome Brunet wrote:
> Enable highspeed mode for vim2 sdio. In theory, the vim2 SDIO bus is
> capable of handling SDR50 mode but this needs to thoroughly tested.
> 
> Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
> ---
>  arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts b/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
> index 18a4b7a6c5df..217f9d6d470e 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
> +++ b/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
> @@ -307,6 +307,7 @@ &sd_emmc_a {
>  	#size-cells = <0>;
>  
>  	bus-width = <4>;
> +	cap-sd-highspeed;
>  	max-frequency = <60000000>;
>  
>  	non-removable;
>