linux-kernel - Re: [PATCH] arm64: dts: mt7622: specify the number of DMA requests

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Message-ID: <91d8eb87-adf0-da62-0c7b-dbf94442f535@gmail.com>
Date:   Fri, 29 Apr 2022 13:57:20 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Rui Salvaterra <rsalvaterra@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     ryder.lee@...iatek.com, daniel@...rotopia.org
Subject: Re: [PATCH] arm64: dts: mt7622: specify the number of DMA requests



On 29/04/2022 10:42, Rui Salvaterra wrote:
> The MT7622 device tree never bothered to specify the number of virtual DMA
> channels for the HSDMA controller, always falling back to the default value of
> 3. Make this value explicit, in order to avoid the following dmesg notification:
> 
> mtk_hsdma 1b007000.dma-controller: Using 3 as missing dma-requests property
> 
> Signed-off-by: Rui Salvaterra <rsalvaterra@...il.com>

Applied, thanks!

> ---
>   arch/arm64/boot/dts/mediatek/mt7622.dtsi | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
> index 3d6eaf6dd078..5551f004945b 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
> @@ -924,6 +924,7 @@ hsdma: dma-controller@...07000 {
>   		clock-names = "hsdma";
>   		power-domains = <&scpsys MT7622_POWER_DOMAIN_ETHSYS>;
>   		#dma-cells = <1>;
> +		dma-requests = <3>;
>   	};
>   
>   	eth: ethernet@...00000 {