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Date:   Fri, 31 Aug 2018 12:21:10 +0200
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Corentin Labbe <clabbe.montjoie@...il.com>
Cc:     axboe@...nel.dk, hdegoede@...hat.com, kishon@...com,
        mark.rutland@....com, robh+dt@...nel.org, wens@...e.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com
Subject: Re: [PATCH v4 12/13] ARM: dts: sun4i: a10: add sata-port/sata-phy
 nodes

On Fri, Aug 31, 2018 at 09:53:50AM +0200, Corentin Labbe wrote:
> On Fri, Aug 31, 2018 at 09:37:24AM +0200, Maxime Ripard wrote:
> > On Thu, Aug 30, 2018 at 09:01:19PM +0200, Corentin Labbe wrote:
> > > This patch convert sun4i-a10 sata to the new binding which use a sata
> > > phy node.
> > > 
> > > Signed-off-by: Corentin Labbe <clabbe.montjoie@...il.com>
> > > ---
> > >  arch/arm/boot/dts/sun4i-a10.dtsi | 13 +++++++++++++
> > >  1 file changed, 13 insertions(+)
> > > 
> > > diff --git a/arch/arm/boot/dts/sun4i-a10.dtsi b/arch/arm/boot/dts/sun4i-a10.dtsi
> > > index 3d62a8950720..52d5c2e79499 100644
> > > --- a/arch/arm/boot/dts/sun4i-a10.dtsi
> > > +++ b/arch/arm/boot/dts/sun4i-a10.dtsi
> > > @@ -556,7 +556,20 @@
> > >  			reg = <0x01c18000 0x1000>;
> > >  			interrupts = <56>;
> > >  			clocks = <&ccu CLK_AHB_SATA>, <&ccu CLK_SATA>;
> > > +			#address-cells = <1>;
> > > +			#size-cells = <0>;
> > >  			status = "disabled";
> > > +
> > > +			sata_port: sata-port@0 {
> > > +				reg = <0>;
> > > +				phys = <&sata_phy>;
> > > +			};
> > > +		};
> > > +
> > > +		sata_phy: sata_phy@...80c0 {
> > > +			compatible = "allwinner,sun4i-a10-sata-phy";
> > > +			reg = <0x01c180c0 0x200>;
> > > +			#phy-cells = <0>;
> > >  		};
> > 
> > This patch, together with the following one, breaks the DT ABI, this
> > isn't something we can do anymore.
> 
> So what can I do ?

Well, you always have the option of not doing anything.

Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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