linux-kernel - Re: [PATCH 5/5] arm64: dts: mediatek: cherry-tomato-r1: Enable NVMe PCI-Express port

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Message-ID: <CAGXv+5GJroyKkj8oZw+BQxiUkiGCb-RBOxnKRkURQz5T6=EvNQ@mail.gmail.com>
Date:   Fri, 21 Apr 2023 15:59:21 +0800
From:   Chen-Yu Tsai <wenst@...omium.org>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     matthias.bgg@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, kernel@...labora.com
Subject: Re: [PATCH 5/5] arm64: dts: mediatek: cherry-tomato-r1: Enable NVMe
 PCI-Express port

On Thu, Apr 20, 2023 at 5:45 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com> wrote:
>
> On Tomato rev1 the PCIe0 controller is used for NVMe storage.

This was slightly confusing for me. AFAIK rev1 is not an actual Tomato
device. It should be the prototype board, which is the original Cherry
reference design by Google [1].

There is an actual Cherry derived device that has NVMe, though it's under
another brand and another name.

ChenYu

[1] Much like Kukui & Jacuzzi (MT8183), and Asurada (MT8192) are the
    reference designs.  I don't think we ever upstream the reference
    boards because they don't really end up in the hands of people
    outside of the project, and the ones we do have tend to be quite
    beaten up or no longer working due to extensive testing.

> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> ---
>  arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts b/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts
> index 2d5e8f371b6d..11fc83ddf236 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts
> @@ -20,6 +20,13 @@ &sound {
>         model = "mt8195_r1019_5682";
>  };
>
> +&pcie0 {
> +       status = "okay";
> +
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&pcie0_pins_default>;
> +};
> +
>  &ts_10 {
>         status = "okay";
>  };
> --
> 2.40.0
>
>