linux-kernel - Re: [PATCH 3/3] arm64: dts: renesas: r8a7795: add ccree binding

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Message-ID: <20180518095038.lti4lzeadxd4kqsy@verge.net.au>
Date:   Fri, 18 May 2018 11:50:38 +0200
From:   Simon Horman <horms@...ge.net.au>
To:     Gilad Ben-Yossef <gilad@...yossef.com>
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Ofir Drang <ofir.drang@....com>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>
Subject: Re: [PATCH 3/3] arm64: dts: renesas: r8a7795: add ccree binding

On Thu, May 17, 2018 at 04:12:23PM +0300, Gilad Ben-Yossef wrote:
> On Thu, May 17, 2018 at 12:04 PM, Simon Horman <horms@...ge.net.au> wrote:
> > On Thu, May 17, 2018 at 11:01:57AM +0300, Gilad Ben-Yossef wrote:
> >> On Wed, May 16, 2018 at 10:43 AM, Simon Horman <horms@...ge.net.au> wrote:
> >> > On Tue, May 15, 2018 at 04:50:44PM +0200, Geert Uytterhoeven wrote:
> >> >> Hi Gilad,
> >> >>
> >> >> On Tue, May 15, 2018 at 2:29 PM, Gilad Ben-Yossef <gilad@...yossef.com> wrote:
> >> >> > Add bindings for CryptoCell instance in the SoC.
> >> >> >
> >> >> > Signed-off-by: Gilad Ben-Yossef <gilad@...yossef.com>
> >> >>
> >> >> Thanks for your patch!
> >> >>
> >> >> > --- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> >> >> > +++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> >> >> > @@ -528,6 +528,14 @@
> >> >> >                         status = "disabled";
> >> >> >                 };
> >> >> >
> >> >> > +               arm_cc630p: crypto@...01000 {
> >> >> > +                       compatible = "arm,cryptocell-630p-ree";
> >> >> > +                       interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
> >> >> > +                       #interrupt-cells = <2>;
> >> >>
> >> >> I believe the #interrupt-cells property is not needed.
> >> >>
> >> >> > +                       reg = <0x0 0xe6601000 0 0x1000>;
> >> >> > +                       clocks = <&cpg CPG_MOD 229>;
> >> >> > +               };
> >> >>
> >> >> The rest looks good, but I cannot verify the register block.
> >> >>
> >> >> > +
> >> >> >                 i2c3: i2c@...d0000 {
> >> >> >                         #address-cells = <1>;
> >> >> >                         #size-cells = <0>;
> >> >
> >> > Thanks, I have applied this after dropping the #interrupt-cells property.
> >>
> >> Thanks you!
> >>
> >> Alas, it will not work without the clk patch (the previous one in the
> >> series) so they need to be
> >> taken or dropped together.
> >
> > I think its fine if it does not yet work.
> > But not if its causes things that previously worked to stop working.
> 
> Based on the further discussion with Geert my recommendation is to
> drop my patch for now,
> take Geert CR clock  patch and I will follow up next week with a v2
> that fixes the clock
> handing as discussed with Geert.

Thanks, I will drop the patch.