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Date:   Wed, 16 Dec 2020 14:06:07 +0800
From:   Bin Meng <bmeng.cn@...il.com>
To:     Yash Shah <yash.shah@...nfive.com>
Cc:     "linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
        "linux-pwm@...r.kernel.org" <linux-pwm@...r.kernel.org>,
        "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        devicetree <devicetree@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "broonie@...nel.org" <broonie@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Albert Ou <aou@...s.berkeley.edu>,
        "lee.jones@...aro.org" <lee.jones@...aro.org>,
        "u.kleine-koenig@...gutronix.de" <u.kleine-koenig@...gutronix.de>,
        Thierry Reding <thierry.reding@...il.com>,
        "andrew@...n.ch" <andrew@...n.ch>,
        Peter Korsgaard <peter@...sgaard.com>,
        "Paul Walmsley ( Sifive)" <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Rob Herring <robh+dt@...nel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH v2 7/9] riscv: dts: add initial support for the SiFive
 FU740-C000 SoC

Hi Yash,

On Wed, Dec 16, 2020 at 1:24 PM Yash Shah <yash.shah@...nfive.com> wrote:
>
> > -----Original Message-----
> > From: Bin Meng <bmeng.cn@...il.com>
> > Sent: 10 December 2020 19:05
> > To: Yash Shah <yash.shah@...nfive.com>
> > Cc: linux-spi@...r.kernel.org; linux-serial@...r.kernel.org; linux-
> > pwm@...r.kernel.org; linux-i2c@...r.kernel.org; linux-kernel <linux-
> > kernel@...r.kernel.org>; linux-riscv <linux-riscv@...ts.infradead.org>;
> > devicetree <devicetree@...r.kernel.org>; open list:GPIO SUBSYSTEM <linux-
> > gpio@...r.kernel.org>; broonie@...nel.org; Greg Kroah-Hartman
> > <gregkh@...uxfoundation.org>; Albert Ou <aou@...s.berkeley.edu>;
> > lee.jones@...aro.org; u.kleine-koenig@...gutronix.de; Thierry Reding
> > <thierry.reding@...il.com>; andrew@...n.ch; Peter Korsgaard
> > <peter@...sgaard.com>; Paul Walmsley ( Sifive)
> > <paul.walmsley@...ive.com>; Palmer Dabbelt <palmer@...belt.com>; Rob
> > Herring <robh+dt@...nel.org>; Bartosz Golaszewski
> > <bgolaszewski@...libre.com>; Linus Walleij <linus.walleij@...aro.org>
> > Subject: Re: [PATCH v2 7/9] riscv: dts: add initial support for the SiFive FU740-
> > C000 SoC
> >
> > [External Email] Do not click links or attachments unless you recognize the
> > sender and know the content is safe
> >
> > On Tue, Dec 8, 2020 at 3:06 PM Yash Shah <yash.shah@...ive.com> wrote:
> > >
> > > Add initial support for the SiFive FU540-C000 SoC. FU740-C000 is built
> >
> > FU740-C000 Soc
> >
> > > around the SiFIve U7 Core Complex and a TileLink interconnect.
> > >
> > > This file is expected to grow as more device drivers are added to the
> > > kernel.
> > >
> > > Signed-off-by: Yash Shah <yash.shah@...ive.com>
> > > ---
> > >  arch/riscv/boot/dts/sifive/fu740-c000.dtsi | 293
> > > +++++++++++++++++++++++++++++
> > >  1 file changed, 293 insertions(+)
> > >  create mode 100644 arch/riscv/boot/dts/sifive/fu740-c000.dtsi
> > >
> > > diff --git a/arch/riscv/boot/dts/sifive/fu740-c000.dtsi
> > > b/arch/riscv/boot/dts/sifive/fu740-c000.dtsi
> > > new file mode 100644
> > > index 0000000..eeb4f8c3
> > > --- /dev/null
> > > +++ b/arch/riscv/boot/dts/sifive/fu740-c000.dtsi
> > > @@ -0,0 +1,293 @@
>
> ...
>
> > > +               plic0: interrupt-controller@...0000 {
> > > +                       #interrupt-cells = <1>;
> > > +                       #address-cells = <0>;
> > > +                       compatible = "sifive,fu540-c000-plic",
> > > + "sifive,plic-1.0.0";
> >
> > I don't see bindings updated for FU740 PLIC, like "sifive,fu740-c000-plic"?
>
> That's because it is not required. There won't be any difference in driver code for FU740 plic.

Are there any driver changes for the drivers that have an updated
fu640-c000-* bindings? I don't see them in the linux-riscv list.

>
> ...
>
> > > +               eth0: ethernet@...90000 {
> > > +                       compatible = "sifive,fu540-c000-gem";
> >
> > "sifive,fu740-c000-gem"?
> >
>
> Same reason as above.
>
> Thanks for your review.

Regards,
Bin

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