From: Rob Herring <robh@kernel.org>
To: Christophe Roullier <christophe.roullier@foss.st.com>
Cc: "David S . Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Richard Cochran <richardcochran@gmail.com>,
Jose Abreu <joabreu@synopsys.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
netdev@vger.kernel.org, devicetree@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] dt-bindings: net: add new property st,ext-phyclk in documentation for stm32
Date: Mon, 4 Mar 2024 10:24:43 -0600 [thread overview]
Message-ID: <20240304162443.GA568211-robh@kernel.org> (raw)
In-Reply-To: <20240229134724.1353903-3-christophe.roullier@foss.st.com>
On Thu, Feb 29, 2024 at 02:47:24PM +0100, Christophe Roullier wrote:
> Add property st,ext-phyclk to manage cases when PHY have no cristal/quartz
> This property can be used with RMII phy without cristal 50Mhz and when we
> want to select RCC clock instead of ETH_REF_CLK
> Can be used also with RGMII phy with no cristal and we select RCC clock
> instead of ETH_CLK125
> This new property replace st,eth-clk-sel and st,eth-ref-clk-sel
That is obvious from the diff. What is not obvious is why we need a new
property and what is the problem with the existing ones.
>
> Signed-off-by: Christophe Roullier <christophe.roullier@foss.st.com>
> ---
> Documentation/devicetree/bindings/net/stm32-dwmac.yaml | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/net/stm32-dwmac.yaml b/Documentation/devicetree/bindings/net/stm32-dwmac.yaml
> index 80937b28fa046..fda23c07c1cad 100644
> --- a/Documentation/devicetree/bindings/net/stm32-dwmac.yaml
> +++ b/Documentation/devicetree/bindings/net/stm32-dwmac.yaml
> @@ -85,12 +85,21 @@ properties:
> phy-supply:
> description: PHY regulator
>
> + st,ext-phyclk:
> + description:
> + set this property in RMII mode when you have PHY without crystal 50MHz and want to
> + select RCC clock instead of ETH_REF_CLK. OR in RGMII mode when you want to select
> + RCC clock instead of ETH_CLK125.
> + type: boolean
> +
> st,eth-clk-sel:
> + deprecated: true
> description:
> set this property in RGMII PHY when you want to select RCC clock instead of ETH_CLK125.
> type: boolean
>
> st,eth-ref-clk-sel:
> + deprecated: true
> description:
> set this property in RMII mode when you have PHY without crystal 50MHz and want to
> select RCC clock instead of ETH_REF_CLK.
> --
> 2.25.1
>
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linux-arm-kernel@lists.infradead.org
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WARNING: multiple messages have this Message-ID (diff)
From: Rob Herring <robh@kernel.org>
To: Christophe Roullier <christophe.roullier@foss.st.com>
Cc: "David S . Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Richard Cochran <richardcochran@gmail.com>,
Jose Abreu <joabreu@synopsys.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
netdev@vger.kernel.org, devicetree@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] dt-bindings: net: add new property st,ext-phyclk in documentation for stm32
Date: Mon, 4 Mar 2024 10:24:43 -0600 [thread overview]
Message-ID: <20240304162443.GA568211-robh@kernel.org> (raw)
In-Reply-To: <20240229134724.1353903-3-christophe.roullier@foss.st.com>
On Thu, Feb 29, 2024 at 02:47:24PM +0100, Christophe Roullier wrote:
> Add property st,ext-phyclk to manage cases when PHY have no cristal/quartz
> This property can be used with RMII phy without cristal 50Mhz and when we
> want to select RCC clock instead of ETH_REF_CLK
> Can be used also with RGMII phy with no cristal and we select RCC clock
> instead of ETH_CLK125
> This new property replace st,eth-clk-sel and st,eth-ref-clk-sel
That is obvious from the diff. What is not obvious is why we need a new
property and what is the problem with the existing ones.
>
> Signed-off-by: Christophe Roullier <christophe.roullier@foss.st.com>
> ---
> Documentation/devicetree/bindings/net/stm32-dwmac.yaml | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/net/stm32-dwmac.yaml b/Documentation/devicetree/bindings/net/stm32-dwmac.yaml
> index 80937b28fa046..fda23c07c1cad 100644
> --- a/Documentation/devicetree/bindings/net/stm32-dwmac.yaml
> +++ b/Documentation/devicetree/bindings/net/stm32-dwmac.yaml
> @@ -85,12 +85,21 @@ properties:
> phy-supply:
> description: PHY regulator
>
> + st,ext-phyclk:
> + description:
> + set this property in RMII mode when you have PHY without crystal 50MHz and want to
> + select RCC clock instead of ETH_REF_CLK. OR in RGMII mode when you want to select
> + RCC clock instead of ETH_CLK125.
> + type: boolean
> +
> st,eth-clk-sel:
> + deprecated: true
> description:
> set this property in RGMII PHY when you want to select RCC clock instead of ETH_CLK125.
> type: boolean
>
> st,eth-ref-clk-sel:
> + deprecated: true
> description:
> set this property in RMII mode when you have PHY without crystal 50MHz and want to
> select RCC clock instead of ETH_REF_CLK.
> --
> 2.25.1
>
next prev parent reply other threads:[~2024-03-04 16:25 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-29 13:47 [PATCH 0/2] Add properties in dwmac-stm32 documentation Christophe Roullier
2024-02-29 13:47 ` Christophe Roullier
2024-02-29 13:47 ` [PATCH 1/2] dt-bindings: net: add phy-supply property for stm32 Christophe Roullier
2024-02-29 13:47 ` Christophe Roullier
2024-02-29 17:33 ` Krzysztof Kozlowski
2024-02-29 17:33 ` Krzysztof Kozlowski
2024-02-29 13:47 ` [PATCH 2/2] dt-bindings: net: add new property st,ext-phyclk in documentation " Christophe Roullier
2024-02-29 13:47 ` Christophe Roullier
2024-02-29 17:36 ` Krzysztof Kozlowski
2024-02-29 17:36 ` Krzysztof Kozlowski
2024-03-04 16:24 ` Rob Herring [this message]
2024-03-04 16:24 ` Rob Herring
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