[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <CAGb2v65dWmFxacx16taTdDf0WO4vCJfJLrf=7Vh6RtJEjHdH5A@mail.gmail.com>
Date: Fri, 31 Aug 2018 15:58:34 +0800
From: Chen-Yu Tsai <wens@...e.org>
To: LABBE Corentin <clabbe.montjoie@...il.com>
Cc: Maxime Ripard <maxime.ripard@...tlin.com>, axboe@...nel.dk,
Hans de Goede <hdegoede@...hat.com>,
Kishon Vijay Abraham I <kishon@...com>,
Mark Rutland <mark.rutland@....com>,
Rob Herring <robh+dt@...nel.org>,
devicetree <devicetree@...r.kernel.org>,
linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
linux-ide@...r.kernel.org,
linux-kernel <linux-kernel@...r.kernel.org>,
linux-sunxi <linux-sunxi@...glegroups.com>,
Icenowy Zheng <icenowy@...c.io>
Subject: Re: [PATCH v4 09/13] ARM: dts: sun8i: r40: add sata node
On Fri, Aug 31, 2018 at 3:56 PM Corentin Labbe
<clabbe.montjoie@...il.com> wrote:
>
> On Fri, Aug 31, 2018 at 09:35:00AM +0200, Maxime Ripard wrote:
> > On Thu, Aug 30, 2018 at 09:01:16PM +0200, Corentin Labbe wrote:
> > > R40 have a sata controller which is the same as A20.
> > > This patch adds a DT node for it.
> > >
> > > Signed-off-by: Icenowy Zheng <icenowy@...c.io>
> > > Signed-off-by: Corentin Labbe <clabbe.montjoie@...il.com>
> > > ---
> > > arch/arm/boot/dts/sun8i-r40.dtsi | 23 +++++++++++++++++++++++
> > > 1 file changed, 23 insertions(+)
> > >
> > > diff --git a/arch/arm/boot/dts/sun8i-r40.dtsi b/arch/arm/boot/dts/sun8i-r40.dtsi
> > > index 852c2ccc3268..d6b5820da850 100644
> > > --- a/arch/arm/boot/dts/sun8i-r40.dtsi
> > > +++ b/arch/arm/boot/dts/sun8i-r40.dtsi
> > > @@ -550,6 +550,29 @@
> > > #size-cells = <0>;
> > > };
> > >
> > > + ahci: sata@...8000 {
> > > + compatible = "allwinner,sun8i-r40-ahci";
> > > + reg = <0x01c18000 0x1000>;
> > > + interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
> > > + clocks = <&ccu CLK_BUS_SATA>, <&ccu CLK_SATA>;
> > > + resets = <&ccu RST_BUS_SATA>;
> > > + resets-name = "ahci";
> > > + #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,sun8i-r40-sata-phy";
> > > + reg = <0x1c180c0 0x200>;
> >
> > Overlapping devices in the DTS is not ok.
> >
>
> I do the same than arch/arm/boot/dts/berlin2.dtsi (sata@...000 phy@...0a0)
> But since it is not a good justification, it seems that regmap is my only solution ?
Since you are effectively splitting one device node into two, you should
adjust the original (ahci) device nodes register range.
ChenYu
Powered by blists - more mailing lists