linux-kernel - Re: [PATCH v2 4/6] ARM: dts: am33xx: use new 'dma-channels/requests' properties

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Message-ID: <8a4dfbe6-e1d6-edc3-fe08-f99b76020b4c@linaro.org>
Date:   Thu, 28 Apr 2022 09:33:18 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Tony Lindgren <tony@...mide.com>
Cc:     Rob Herring <robh@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Benoît Cousson <bcousson@...libre.com>,
        Sekhar Nori <nsekhar@...com>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Vinod Koul <vkoul@...nel.org>, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        dmaengine@...r.kernel.org
Subject: Re: [PATCH v2 4/6] ARM: dts: am33xx: use new 'dma-channels/requests'
 properties

On 28/04/2022 09:30, Tony Lindgren wrote:
> * Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> [220427 19:23]:
>> On Wed, 27 Apr 2022 at 20:20, Rob Herring <robh@...nel.org> wrote:
>>>> diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
>>>> index f6ec85d58dd1..55ffb0813ded 100644
>>>> --- a/arch/arm/boot/dts/am33xx.dtsi
>>>> +++ b/arch/arm/boot/dts/am33xx.dtsi
>>>> @@ -461,8 +461,8 @@ cppi41dma: dma-controller@...0 {
>>>>                               interrupts = <17>;
>>>>                               interrupt-names = "glue";
>>>>                               #dma-cells = <2>;
>>>> -                             #dma-channels = <30>;
>>>> -                             #dma-requests = <256>;
>>>> +                             dma-channels = <30>;
>>>> +                             dma-requests = <256>;
>>>
>>> You could keep the old properties for compatibility and to apply
>>> immediately.
>>
>> Indeed, that's a nice solution. Any preference from TI SoC maintainers?
> 
> Makes sense to me to avoid dependencies.

Thanks. I will send a v3 today with such change.


Best regards,
Krzysztof