linux-kernel - Re: [PATCH v2 1/8] dt-bindings: PCI: Add binding for qps615

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Message-ID: <90582c92-ca50-4776-918d-b7486cf942b0@kernel.org>
Date: Mon, 5 Aug 2024 19:18:04 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Bjorn Andersson <quic_bjorande@...cinc.com>,
 Krishna Chaitanya Chundru <quic_krichai@...cinc.com>
Cc: Lorenzo Pieralisi <lpieralisi@...nel.org>,
 Krzysztof Wilczyński <kw@...ux.com>,
 Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Konrad Dybcio <konrad.dybcio@...aro.org>,
 cros-qcom-dts-watchers@...omium.org, Bartosz Golaszewski <brgl@...ev.pl>,
 Jingoo Han <jingoohan1@...il.com>,
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
 andersson@...nel.org, quic_vbadigan@...cinc.com,
 linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v2 1/8] dt-bindings: PCI: Add binding for qps615

On 05/08/2024 19:07, Bjorn Andersson wrote:
> On Mon, Aug 05, 2024 at 09:41:26AM +0530, Krishna Chaitanya Chundru wrote:
>> On 8/4/2024 2:23 PM, Krzysztof Kozlowski wrote:
>>> On 03/08/2024 05:22, Krishna chaitanya chundru wrote:
>>>> diff --git a/Documentation/devicetree/bindings/pci/qcom,qps615.yaml b/Documentation/devicetree/bindings/pci/qcom,qps615.yaml
> [..]
>>>> +  qps615,axi-clk-freq-hz:
>>>> +    description:
>>>> +      AXI clock which internal bus of the switch.
>>>
>>> No need, use CCF.
>>>
>> ack
> 
> This is a clock that's internal to the QPS615, so there's no clock
> controller involved and hence I don't think CCF is applicable.

AXI does not sound that internal. DT rarely needs to specify internal
clock rates. What if you want to define rates for 20 clocks? Even
clock-frequency is deprecated, so why this would be allowed?
bus-frequency is allowed for buses, but that's not the case here, I guess?

Best regards,
Krzysztof