Re: [PATCH v2 1/2] arm64: dts: renesas: Add Renesas R8A77990 SoC support

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Hi Shimoda-san,

On Fri, Apr 20, 2018 at 2:28 PM, Yoshihiro Shimoda
<yoshihiro.shimoda.uh@xxxxxxxxxxx> wrote:
> This patch adds basic support for the Renesas R-Car E3 (R8A77990) SoC:
>   - PSCI
>   - CPU (single)
>   - Cache controller
>   - Main clocks and controller
>   - Interrupt controller
>   - Timer
>   - PMU
>   - Reset controller
>   - Product register
>   - System controller
>   - UART for console
>
> Inspried by a patch by Takeshi Kihara in the BSP.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>

Thanks for you patch!

> --- /dev/null
> +++ b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
> @@ -0,0 +1,127 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Device Tree Source for the r8a77990 SoC
> + *
> + * Copyright (C) 2018 Renesas Electronics Corp.
> + */
> +
> +#include <dt-bindings/clock/renesas-cpg-mssr.h>
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +/ {
> +       compatible = "renesas,r8a77990";
> +       #address-cells = <2>;
> +       #size-cells = <2>;
> +
> +       cpus {

> +               L2_CA53: cache-controller@0 {
> +                       compatible = "cache";
> +                       reg = <0>;

Please no unit-addresses and reg properties for cache controllers.

> +                       power-domains = <&sysc 21>;
> +                       cache-unified;
> +                       cache-level = <2>;
> +               };
> +       };

> +       psci {
> +               compatible = "arm,psci-0.2";

"arm,psci-1.0", "arm,psci-0.2"?

> +               method = "smc";
> +       };
> +
> +       soc: soc {

> +               rst: reset-controller@e6160000 {
> +                       compatible = "renesas,r8a77990-rst";
> +                       reg = <0 0xe6160000 0 0x0200>;
> +               };
> +
> +               sysc: system-controller@e6180000 {
> +                       compatible = "renesas,r8a77990-sysc";
> +                       reg = <0 0xe6180000 0 0x0400>;
> +                       #power-domain-cells = <1>;
> +               };
> +
> +               scif2: serial@e6e88000 {
> +                       compatible = "renesas,scif-r8a77990",
> +                                    "renesas,rcar-gen3-scif", "renesas,scif";
> +                       reg = <0 0xe6e88000 0 64>;
> +                       interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
> +                       clocks = <&cpg CPG_MOD 310>;
> +                       clock-names = "fck";

I assume you plan to add the other clocks later? That's fine for me.

> +                       power-domains = <&sysc 32>;
> +                       resets = <&cpg 310>;
> +                       status = "disabled";
> +               };

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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