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From: Krzysztof Kozlowski <krzk@kernel.org>
To: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>,
	Rob Herring <robh@kernel.org>,
	Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
Cc: "Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Krzysztof Wilczyński" <kw@linux.com>,
	"Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Conor Dooley" <conor+dt@kernel.org>,
	"Bjorn Andersson" <andersson@kernel.org>,
	"Konrad Dybcio" <konradybcio@kernel.org>,
	cros-qcom-dts-watchers@chromium.org,
	linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	quic_vbadigan@quicinc.com, quic_mrana@quicinc.com
Subject: Re: [PATCH v3 3/3] arm64: qcom: sc7280: Move phy, perst to root port node
Date: Wed, 11 Jun 2025 08:36:11 +0200	[thread overview]
Message-ID: <77eeca94-0703-44c9-b30b-17fc989dedb7@kernel.org> (raw)
In-Reply-To: <56eccdb0-c877-431d-9833-16254afa1a0c@oss.qualcomm.com>

On 10/06/2025 15:15, Konrad Dybcio wrote:
> On 6/2/25 3:01 PM, Krzysztof Kozlowski wrote:
>> On 08/05/2025 16:26, Konrad Dybcio wrote:
>>> On 4/23/25 5:37 PM, Rob Herring wrote:
>>>> On Sat, Apr 19, 2025 at 10:49:26AM +0530, Krishna Chaitanya Chundru wrote:
>>>>> There are many places we agreed to move the wake and perst gpio's
>>>>> and phy etc to the pcie root port node instead of bridge node[1].
>>>>>
>>>>> So move the phy, phy-names, wake-gpio's in the root port.
>>>>> There is already reset-gpio defined for PERST# in pci-bus-common.yaml,
>>>>> start using that property instead of perst-gpio.
>>>>
>>>> Moving the properties will break existing kernels. If that doesn't 
>>>> matter for these platforms, say so in the commit msg.
>>>
>>> I don't think we generally guarantee *forward* dt compatibility though, no?
>> We do not guarantee, comment was not about this, but we expect. This DTS
>> is supposed and is used by other projects. There was entire complain
>> last DT BoF about kernel breaking DTS users all the time.
> 
> Yeah I get it.. we're in a constant cycle of adding new components and
> later coming to the conclusion that whoever came up with the initial
> binding had no clue what they're doing..
> 
> That said, "absens carens".. if users or developers of other projects
> don't speak up on LKML (which serves as the de facto public square for
> DT development), we don't get any feedback to take into account when
> making potentially breaking changes (that may have a good reason behind
> them). We get a patch from OpenBSD people every now and then, but it's
> a drop in the ocean.
> 
I don't understand what you are commenting on. Do you reject what I
asked for?

Best regards,
Krzysztof

  reply	other threads:[~2025-06-11  6:36 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-19  5:19 [PATCH v3 0/3] PCI: qcom: Move PERST# GPIO & phy retrieval from controller to PCIe bridge node Krishna Chaitanya Chundru
2025-04-19  5:19 ` [PATCH v3 1/3] dt-bindings: PCI: qcom: Move phy, wake & reset gpio's to root port Krishna Chaitanya Chundru
2025-04-23 15:38   ` Rob Herring (Arm)
2025-06-01  5:14   ` Manivannan Sadhasivam
2025-04-19  5:19 ` [PATCH v3 2/3] PCI: qcom: Add support for multi-root port Krishna Chaitanya Chundru
2025-04-22 20:45   ` Konrad Dybcio
2025-04-23  3:10     ` Krishna Chaitanya Chundru
2025-06-01  7:02   ` Manivannan Sadhasivam
2025-04-19  5:19 ` [PATCH v3 3/3] arm64: qcom: sc7280: Move phy, perst to root port node Krishna Chaitanya Chundru
2025-04-23 15:37   ` Rob Herring
2025-05-08 14:26     ` Konrad Dybcio
2025-06-02 13:01       ` Krzysztof Kozlowski
2025-06-10 13:15         ` Konrad Dybcio
2025-06-11  6:36           ` Krzysztof Kozlowski [this message]
2025-06-11 15:17             ` Konrad Dybcio
2025-06-11 15:33               ` Krzysztof Kozlowski
2025-06-01  7:05   ` Manivannan Sadhasivam
2025-06-03  6:33     ` Krishna Chaitanya Chundru
2025-06-03  6:52       ` Manivannan Sadhasivam
2025-06-03  7:35         ` Krishna Chaitanya Chundru
2025-06-03  8:07           ` Manivannan Sadhasivam
2025-06-01  7:09 ` [PATCH v3 0/3] PCI: qcom: Move PERST# GPIO & phy retrieval from controller to PCIe bridge node Manivannan Sadhasivam

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