Re: [PATCH 4/4] arm64: dts: renesas: Add HiHope RZ/G2N main board support

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Hi Biju,

On Tue, Sep 17, 2019 at 3:12 PM Biju Das <biju.das@xxxxxxxxxxxxxx> wrote:
> Basic support for the HiHope RZ/G2N main board:
>   - Memory,
>   - Main crystal,
>   - Serial console
>
> Signed-off-by: Biju Das <biju.das@xxxxxxxxxxxxxx>

Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

One question below...

> --- /dev/null
> +++ b/arch/arm64/boot/dts/renesas/r8a774b1-hihope-rzg2n.dts
> @@ -0,0 +1,26 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Device Tree Source for the HiHope RZ/G2N main board
> + *
> + * Copyright (C) 2019 Renesas Electronics Corp.
> + */
> +
> +/dts-v1/;
> +#include "r8a774b1.dtsi"
> +#include "hihope-common.dtsi"
> +
> +/ {
> +       model = "HopeRun HiHope RZ/G2N main board based on r8a774b1";
> +       compatible = "hoperun,hihope-rzg2n", "renesas,r8a774b1";
> +
> +       memory@48000000 {
> +               device_type = "memory";
> +               /* first 128MB is reserved for secure area. */
> +               reg = <0x0 0x48000000 0x0 0x78000000>;
> +       };
> +
> +       memory@480000000 {
> +               device_type = "memory";
> +               reg = <0x4 0x80000000 0x0 0x80000000>;
> +       };
> +};

So both the HiHope RZ/G2M and RZ/G2N boards have 4 GiB of RAM, while
the latter has a narrower memory bus, so it must be wired differently?

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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