linux-kernel - Re: [PATCH v3 3/6] ARM: dts: sun8i: v3s: Add node for system control

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Date:   Thu, 3 Dec 2020 12:20:45 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Martin Cerveny <m.cerveny@...puter.org>
Cc:     Maxime Ripard <mripard@...nel.org>, devel@...verdev.osuosl.org,
        devicetree <devicetree@...r.kernel.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        Mark Brown <broonie@...nel.org>,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        Lee Jones <lee.jones@...aro.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Icenowy Zheng <icenowy@...c.io>
Subject: Re: [PATCH v3 3/6] ARM: dts: sun8i: v3s: Add node for system control

Hi,

On Mon, Nov 16, 2020 at 8:57 PM Martin Cerveny <m.cerveny@...puter.org> wrote:
>
> Allwinner V3s has system control and SRAM C1 region similar to H3.
>
> Signed-off-by: Martin Cerveny <m.cerveny@...puter.org>
> ---
>  arch/arm/boot/dts/sun8i-v3s.dtsi | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
>
> diff --git a/arch/arm/boot/dts/sun8i-v3s.dtsi b/arch/arm/boot/dts/sun8i-v3s.dtsi
> index 0c7341676921..70193512c222 100644
> --- a/arch/arm/boot/dts/sun8i-v3s.dtsi
> +++ b/arch/arm/boot/dts/sun8i-v3s.dtsi
> @@ -161,6 +161,20 @@ syscon: system-control@...0000 {
>                         #address-cells = <1>;
>                         #size-cells = <1>;
>                         ranges;
> +
> +                       sram_c: sram@...0000 {
> +                               compatible = "mmio-sram";
> +                               reg = <0x01d00000 0x80000>;

How was this address derived? Did you check that there is actually SRAM here?

ChenYu

> +                               #address-cells = <1>;
> +                               #size-cells = <1>;
> +                               ranges = <0 0x01d00000 0x80000>;
> +
> +                               ve_sram: sram-section@0 {
> +                                       compatible = "allwinner,sun8i-v3s-sram-c1",
> +                                                    "allwinner,sun4i-a10-sram-c1";
> +                                       reg = <0x000000 0x80000>;
> +                               };
> +                       };
>                 };
>
>                 tcon0: lcd-controller@...c000 {
> --
> 2.25.1
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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