linux-kernel - Re: [PATCH v2 05/14] dt-bindings: arm: mediatek: document the pcie mirror node on MT7622

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Date:   Thu, 7 Apr 2022 12:19:24 -0500
From:   Rob Herring <robh@...nel.org>
To:     Felix Fietkau <nbd@....name>
Cc:     netdev@...r.kernel.org, Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Lorenzo Bianconi <lorenzo@...nel.org>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 05/14] dt-bindings: arm: mediatek: document the pcie
 mirror node on MT7622

On Tue, Apr 05, 2022 at 09:57:46PM +0200, Felix Fietkau wrote:
> From: Lorenzo Bianconi <lorenzo@...nel.org>
> 
> This patch adds the pcie mirror document bindings for MT7622 SoC.
> The feature is used for intercepting PCIe MMIO access for the WED core
> Add related info in mediatek-net bindings.
> 
> Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
> Signed-off-by: Felix Fietkau <nbd@....name>
> ---
>  .../mediatek/mediatek,mt7622-pcie-mirror.yaml | 42 +++++++++++++++++++
>  .../devicetree/bindings/net/mediatek-net.txt  |  2 +
>  2 files changed, 44 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-pcie-mirror.yaml
> 
> diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-pcie-mirror.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-pcie-mirror.yaml
> new file mode 100644
> index 000000000000..9fbeb626ab23
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-pcie-mirror.yaml
> @@ -0,0 +1,42 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/arm/mediatek/mediatek,mt7622-pcie-mirror.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: MediaTek PCIE Mirror Controller for MT7622
> +
> +maintainers:
> +  - Lorenzo Bianconi <lorenzo@...nel.org>
> +  - Felix Fietkau <nbd@....name>
> +
> +description:
> +  The mediatek PCIE mirror provides a configuration interface for PCIE
> +  controller on MT7622 soc.
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - mediatek,mt7622-pcie-mirror
> +      - const: syscon

This doesn't sound like a syscon to me. Are there multiple clients or 
functions in this block? A 'syscon' property is not the only way to 
create a regmap if that's what you need.

Rob