netdev - Re: [PATCH v4 3/3] arm64: dts: renesas: r9a07g044: Add CANFD node

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Date:   Wed, 4 Aug 2021 09:11:20 +0100
From:   "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To:     Marc Kleine-Budde <mkl@...gutronix.de>,
        Geert Uytterhoeven <geert+renesas@...der.be>
Cc:     Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Rob Herring <robh+dt@...nel.org>,
        Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
        Wolfgang Grandegger <wg@...ndegger.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Magnus Damm <magnus.damm@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        linux-can@...r.kernel.org, netdev <netdev@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Biju Das <biju.das.jz@...renesas.com>
Subject: Re: [PATCH v4 3/3] arm64: dts: renesas: r9a07g044: Add CANFD node

Hi Marc,

On Wed, Aug 4, 2021 at 8:59 AM Marc Kleine-Budde <mkl@...gutronix.de> wrote:
>
> On 27.07.2021 14:30:22, Lad Prabhakar wrote:
> > Add CANFD node to R9A07G044 (RZ/G2L) SoC DTSI.
> >
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> > Reviewed-by: Biju Das <biju.das.jz@...renesas.com>
> > ---
> >  arch/arm64/boot/dts/renesas/r9a07g044.dtsi | 41 ++++++++++++++++++++++
> >  1 file changed, 41 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/renesas/r9a07g044.dtsi b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi
> > index 9a7489dc70d1..51655c09f1f8 100644
> > --- a/arch/arm64/boot/dts/renesas/r9a07g044.dtsi
> > +++ b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi
> > @@ -13,6 +13,13 @@
> >       #address-cells = <2>;
> >       #size-cells = <2>;
> >
> > +     /* External CAN clock - to be overridden by boards that provide it */
> > +     can_clk: can {
> > +             compatible = "fixed-clock";
> > +             #clock-cells = <0>;
> > +             clock-frequency = <0>;
> > +     };
> > +
> >       /* clock can be either from exclk or crystal oscillator (XIN/XOUT) */
> >       extal_clk: extal {
> >               compatible = "fixed-clock";
> > @@ -89,6 +96,40 @@
> >                       status = "disabled";
> >               };
> >
> > +             canfd: can@...50000 {
> > +                     compatible = "renesas,r9a07g044-canfd", "renesas,rzg2l-canfd";
> > +                     reg = <0 0x10050000 0 0x8000>;
> > +                     interrupts = <GIC_SPI 426 IRQ_TYPE_LEVEL_HIGH>,
> > +                                  <GIC_SPI 427 IRQ_TYPE_LEVEL_HIGH>,
> > +                                  <GIC_SPI 422 IRQ_TYPE_LEVEL_HIGH>,
> > +                                  <GIC_SPI 424 IRQ_TYPE_LEVEL_HIGH>,
> > +                                  <GIC_SPI 428 IRQ_TYPE_LEVEL_HIGH>,
> > +                                  <GIC_SPI 423 IRQ_TYPE_LEVEL_HIGH>,
> > +                                  <GIC_SPI 425 IRQ_TYPE_LEVEL_HIGH>,
> > +                                  <GIC_SPI 429 IRQ_TYPE_LEVEL_HIGH>;
> > +                     interrupt-names = "g_err", "g_recc",
> > +                                       "ch0_err", "ch0_rec", "ch0_trx",
> > +                                       "ch1_err", "ch1_rec", "ch1_trx";
> > +                     clocks = <&cpg CPG_MOD R9A07G044_CANFD_PCLK>,
> > +                              <&cpg CPG_CORE R9A07G044_CLK_P0_DIV2>,
> > +                              <&can_clk>;
> > +                     clock-names = "fck", "canfd", "can_clk";
> > +                     assigned-clocks = <&cpg CPG_CORE R9A07G044_CLK_P0_DIV2>;
> > +                     assigned-clock-rates = <50000000>;
> > +                     resets = <&cpg R9A07G044_CANFD_RSTP_N>,
> > +                              <&cpg R9A07G044_CANFD_RSTC_N>;
> > +                     reset-names = "rstp_n", "rstc_n";
> > +                     power-domains = <&cpg>;
> > +                     status = "disabled";
> > +
> > +                     channel0 {
> > +                             status = "disabled";
> > +                     };
> > +                     channel1 {
> > +                             status = "disabled";
> > +                     };
> > +             };
> > +
> >               i2c0: i2c@...58000 {
> >                       #address-cells = <1>;
> >                       #size-cells = <0>;
>
> This doesn't apply to net-next/master, the r9a07g044.dtsi doesn't have a
> i2c0 node at all. There isn't a i2c0 node in Linus' master branch, yet.
>
I had based the patch on top [1] (sorry I should have mentioned the
dependency), usually Geert picks up the DTS/I patches and queues it
via ARM tree. Shall I rebase it on net-next and re-send ?

@Geert Uytterhoeven Is that OK ?

[1] https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git/log/?h=renesas-arm-dt-for-v5.15

Cheers,
Prabhakar

> Marc
>
> --
> Pengutronix e.K.                 | Marc Kleine-Budde           |
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