linux-kernel - Re: [PATCH 5/6] arm64: dts: ls1028a: Specify the DMA channels for the DSPI controllers

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Date:   Mon, 9 Mar 2020 21:59:32 +0200
From:   Vladimir Oltean <olteanv@...il.com>
To:     Michael Walle <michael@...le.cc>
Cc:     Mark Brown <broonie@...nel.org>, linux-spi@...r.kernel.org,
        lkml <linux-kernel@...r.kernel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, Esben Haabendal <eha@...f.com>,
        angelo@...am.it, andrew.smirnov@...il.com,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Wei Chen <weic@...dia.com>, Mohamed Hosny <mhosny@...dia.com>,
        peng.ma@....com
Subject: Re: [PATCH 5/6] arm64: dts: ls1028a: Specify the DMA channels for the
 DSPI controllers

On Mon, 9 Mar 2020 at 21:06, Michael Walle <michael@...le.cc> wrote:
>
> Am 2020-03-09 15:56, schrieb Vladimir Oltean:
> > From: Vladimir Oltean <vladimir.oltean@....com>
> >
> > LS1028A has a functional connection to the eDMA module. Even if the
> > spi-fsl-dspi.c driver is not using DMA for LS1028A now, define the
> > slots
> > in the DMAMUX for connecting the eDMA channels to the 3 DSPI
> > controllers.
> >
> > Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
> > ---
> >  arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 6 ++++++
> >  1 file changed, 6 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> > b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> > index 515e0a1b934f..18155273a46e 100644
> > --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> > @@ -298,6 +298,8 @@
> >                       interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
> >                       clock-names = "dspi";
> >                       clocks = <&clockgen 4 1>;
> > +                     dmas = <&edma0 0 62>, <&edma0 0 60>;
> > +                     dma-names = "tx", "rx";
>
> minor nit. Other nodes specified the dma channels as
>
> dma-names = "tx", "rx";
> dmas = <&edma0 0 62>,
>         <&edma0 0 60>;
>
> -michael
>

Does it matter?

Regards,
-Vladimir