linux-kernel - Re: [PATCH 06/25] dt-bindings: net: dwmac: Add Tx/Rx clock sources

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Message-ID: <20201215173204.GA4072234@robh.at.kernel.org>
Date:   Tue, 15 Dec 2020 11:32:04 -0600
From:   Rob Herring <robh@...nel.org>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>
Cc:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Johan Hovold <johan@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Joao Pinto <jpinto@...opsys.com>,
        Lars Persson <larper@...s.com>,
        Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Vyacheslav Mitrofanov 
        <Vyacheslav.Mitrofanov@...kalelectronics.ru>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 06/25] dt-bindings: net: dwmac: Add Tx/Rx clock sources

On Mon, Dec 14, 2020 at 12:15:56PM +0300, Serge Semin wrote:
> Generic DW *MAC can be connected to an external Tramit and Receive clock

s/Tramit/Transmit/

> generators. Add the corresponding clocks description and clock-names to
> the generic bindings schema so new DW *MAC-based bindings wouldn't declare
> its own names of the same clocks.
> 
> Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> ---
>  .../devicetree/bindings/net/snps,dwmac.yaml        | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> index e1ebe5c8b1da..74820f491346 100644
> --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> @@ -126,6 +126,18 @@ properties:
>            MCI, CSR and SMA interfaces run on this clock. If it's omitted,
>            the CSR interfaces are considered as synchronous to the system
>            clock domain.
> +      - description:
> +          GMAC Tx clock or so called Transmit clock. The clock is supplied
> +          by an external with respect to the DW MAC clock generator.
> +          The clock source and its frequency depends on the DW MAC xMII mode.
> +          In case if it's supplied by PHY/SerDes this property can be
> +          omitted.
> +      - description:
> +          GMAC Rx clock or so called Receive clock. The clock is supplied
> +          by an external with respect to the DW MAC clock generator.
> +          The clock source and its frequency depends on the DW MAC xMII mode.
> +          In case if it's supplied by PHY/SerDes or it's synchronous to
> +          the Tx clock this property can be omitted.
>        - description:
>            PTP reference clock. This clock is used for programming the
>            Timestamp Addend Register. If not passed then the system
> @@ -139,6 +151,8 @@ properties:
>        enum:
>          - stmmaceth
>          - pclk
> +        - tx
> +        - rx
>          - ptp_ref
>  
>    resets:
> -- 
> 2.29.2
>