From: "Swathi K S" <swathi.ks@samsung.com>
To: "'Krzysztof Kozlowski'" <krzk@kernel.org>
Cc: <krzk+dt@kernel.org>, <andrew+netdev@lunn.ch>,
<davem@davemloft.net>, <edumazet@google.com>, <kuba@kernel.org>,
<pabeni@redhat.com>, <robh@kernel.org>, <conor+dt@kernel.org>,
<richardcochran@gmail.com>, <mcoquelin.stm32@gmail.com>,
<alexandre.torgue@foss.st.com>, <rmk+kernel@armlinux.org.uk>,
<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>,
"'Pankaj Dubey'" <pankaj.dubey@samsung.com>
Subject: RE: [PATCH v6 1/2] dt-bindings: net: Add FSD EQoS device tree bindings
Date: Fri, 14 Feb 2025 15:03:15 +0530 [thread overview]
Message-ID: <00ce01db7ec3$7f9ab750$7ed025f0$@samsung.com> (raw)
In-Reply-To: <7d50f55d-d0cd-4741-ab55-2f54dc45d6ab@kernel.org>
> -----Original Message-----
> From: Krzysztof Kozlowski <krzk@kernel.org>
> Sent: 14 February 2025 13:02
> To: Swathi K S <swathi.ks@samsung.com>
> Cc: krzk+dt@kernel.org; andrew+netdev@lunn.ch; davem@davemloft.net;
> edumazet@google.com; kuba@kernel.org; pabeni@redhat.com;
> robh@kernel.org; conor+dt@kernel.org; richardcochran@gmail.com;
> mcoquelin.stm32@gmail.com; alexandre.torgue@foss.st.com;
> rmk+kernel@armlinux.org.uk; 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 v6 1/2] dt-bindings: net: Add FSD EQoS device tree
> bindings
>
> On 14/02/2025 05:53, Swathi K S wrote:
> >
> >
> >> -----Original Message-----
> >> From: Krzysztof Kozlowski <krzk@kernel.org>
> >> Sent: 13 February 2025 17:31
> >> To: Swathi K S <swathi.ks@samsung.com>
> >> Cc: krzk+dt@kernel.org; andrew+netdev@lunn.ch;
> davem@davemloft.net;
> >> edumazet@google.com; kuba@kernel.org; pabeni@redhat.com;
> >> robh@kernel.org; conor+dt@kernel.org; richardcochran@gmail.com;
> >> mcoquelin.stm32@gmail.com; alexandre.torgue@foss.st.com;
> >> rmk+kernel@armlinux.org.uk; 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 v6 1/2] dt-bindings: net: Add FSD EQoS device
> >> tree bindings
> >>
> >> On 13/02/2025 12:04, Swathi K S wrote:
> >>>
> >>>
> >>>> -----Original Message-----
> >>>> From: Krzysztof Kozlowski <krzk@kernel.org>
> >>>> Sent: 13 February 2025 13:24
> >>>> To: Swathi K S <swathi.ks@samsung.com>
> >>>> Cc: krzk+dt@kernel.org; andrew+netdev@lunn.ch;
> >> davem@davemloft.net;
> >>>> edumazet@google.com; kuba@kernel.org; pabeni@redhat.com;
> >>>> robh@kernel.org; conor+dt@kernel.org; richardcochran@gmail.com;
> >>>> mcoquelin.stm32@gmail.com; alexandre.torgue@foss.st.com;
> >>>> rmk+kernel@armlinux.org.uk; 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 v6 1/2] dt-bindings: net: Add FSD EQoS device
> >>>> tree bindings
> >>>>
> >>>> On Thu, Feb 13, 2025 at 10:16:23AM +0530, Swathi K S wrote:
> >>>>> + clock-names:
> >>>>> + minItems: 5
> >>>>> + maxItems: 10
> >>>>> + contains:
> >>>>> + enum:
> >>>>> + - ptp_ref
> >>>>> + - master_bus
> >>>>> + - slave_bus
> >>>>> + - tx
> >>>>> + - rx
> >>>>> + - master2_bus
> >>>>> + - slave2_bus
> >>>>> + - eqos_rxclk_mux
> >>>>> + - eqos_phyrxclk
> >>>>> + - dout_peric_rgmii_clk
> >>>>
> >>>> This does not match the previous entry. It should be strictly
> >>>> ordered with
> >>>> minItems: 5.
> >>>
> >>> Hi Krzysztof,
> >>> Thanks for reviewing.
> >>> In FSD SoC, we have 2 instances of ethernet in two blocks.
> >>> One instance needs 5 clocks and the other needs 10 clocks.
> >>
> >> I understand and I do not think this is contradictory to what I asked.
> >> If it is, then why/how?
> >>
> >>>
> >>> I tried to understand this by looking at some other dt-binding files
> >>> as given below, but looks like they follow similar approach
> >>> Documentation/devicetree/bindings/net/stm32-dwmac.yaml
> >>> Documentation/devicetree/bindings/net/rockchip-dwmac.yaml
> >>>
> >>> Could you please guide me on how to implement this?
> >>> Also, please help me understand what is meant by 'strictly ordered'
> >>
> >> Every other 99% of bindings. Just like your clocks property.
> >
> > Hi Krzysztof,
> > Thanks for your feedback.
> > I want to make sure I fully understand your comment.
> > I can see we have added clocks and clock names in the same order.
>
> No, you did not. You can see syntax is very different - one uses items, other
> uses contains-enum. And now test it, change the order in DTS and see if you
> see any warning.
>
> > Could you please help in detail what specifically needs to be modified
> regarding the ordering and minItems/maxItems usage?
> You did not try hard enough.
>
> Open other bindings and look how they list clocks. For example any Samsung
> clock controller bindings. Or any qcom bindings.
Thanks for your insight. I tried understanding the dt-binding implementations from Samsung/ qcom as you suggested.
I am thinking of making the following modification in clock-names:
clock-names:
minItems: 5
items:
- const: ptp_ref
- const: master_bus
- const: slave_bus
- const: tx
- const: rx
- const: master2_bus
- const: slave2_bus
- const: eqos_rxclk_mux
- const: eqos_phyrxclk
- const: dout_peric_rgmii_clk
Does this align with your feedback or do you suggest any further changes?
-Swathi
>
> Best regards,
> Krzysztof
next prev parent reply other threads:[~2025-02-14 9:47 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20250213044950epcas5p1a7badb480a7e8d843fe0ff51bcf5cbf4@epcas5p1.samsung.com>
2025-02-13 4:46 ` [PATCH v6 0/2] net: stmmac: dwc-qos: Add FSD EQoS support Swathi K S
[not found] ` <CGME20250213044955epcas5p110d1e582c8ee02579ead73f9686819ff@epcas5p1.samsung.com>
2025-02-13 4:46 ` [PATCH v6 1/2] dt-bindings: net: Add FSD EQoS device tree bindings Swathi K S
2025-02-13 7:54 ` Krzysztof Kozlowski
2025-02-13 11:04 ` Swathi K S
2025-02-13 12:00 ` Krzysztof Kozlowski
2025-02-14 4:53 ` Swathi K S
2025-02-14 7:31 ` Krzysztof Kozlowski
2025-02-14 9:33 ` Swathi K S [this message]
2025-02-14 10:55 ` Krzysztof Kozlowski
2025-02-14 0:19 ` Andrew Lunn
2025-02-14 5:17 ` Swathi K S
2025-02-14 13:10 ` Andrew Lunn
2025-02-17 5:19 ` Swathi K S
2025-02-17 15:18 ` Andrew Lunn
2025-02-18 3:55 ` Swathi K S
2025-02-18 15:33 ` Andrew Lunn
[not found] ` <CGME20250213044959epcas5p1b6f6d5554f69b5c24a5b4a15c8bf1fc9@epcas5p1.samsung.com>
2025-02-13 4:46 ` [PATCH v6 2/2] net: stmmac: dwc-qos: Add FSD EQoS support Swathi K S
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