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From: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
To: Loic Poulain <loic.poulain@oss.qualcomm.com>,
	Hangxiang Ma <hangxiang.ma@oss.qualcomm.com>
Cc: Bryan O'Donoghue <bod@kernel.org>,
	Nihal Kumar Gupta <nihal.gupta@oss.qualcomm.com>,
	Robert Foss <rfoss@kernel.org>,
	Andi Shyti <andi.shyti@kernel.org>, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>, Vinod Koul <vkoul@kernel.org>,
	Neil Armstrong <neil.armstrong@linaro.org>,
	Manivannan Sadhasivam <mani@kernel.org>,
	Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Suresh Vankadara <svankada@qti.qualcomm.com>,
	Vikram Sharma <vikram.sharma@oss.qualcomm.com>,
	linux-i2c@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-phy@lists.infradead.org, linux-media@vger.kernel.org
Subject: Re: [PATCH v3 5/5] media: qcom: camss: Add support for Hawi
Date: Wed, 4 Nov 2026 16:17:13 +0000	[thread overview]
Message-ID: <7acf1f64-a2ac-411d-a235-69ea52231623@linaro.org> (raw)
In-Reply-To: <CAFEp6-3ka3ZKzCoLQ5BNv0YR+yhYXVRwV6G6rM8Lx_9hZ0RqVw@mail.gmail.com>

On 04/11/2026 16:11, Loic Poulain wrote:
>>> We have a series from Antans to address this though.
>>>
>>> We should list the clocks the SoC supports not constrain that list for
>>> one specific sensor on a test-case.
>>>
>>> ---
>>> bod
>> Good to know that Antans has a series addressing this. I agree that we
>> should list all the clock rates supported by the SoC rather than
>> constraining them for a specific sensor.
>>
>> One additional concern: if the clock selection logic still always picks
>> freq[0], listing a lower rate first could leave CAMSS unable to work
>> properly with sensors that need higher bandwidth.
>>
>> Could you please share the link to the series? I'll rebase the next
>> revision on top of it.
> I don't think Atanas' series targets the CSID clocks, only the VFE
> clocks. Ideally, we should make similar changes for the CSID clocks as
> well, but for now they are not being considered here.
> 
> Perhaps add a few comments documenting the supported rates and use a
> single rate for the time being. Once the CSID clock changes land, we
> should be able to revisit and adapt this accordingly?

Its the same principle though.

I don't think there's a valid case to exclude clock-rates purely because 
one sensor requires the higher rate and we aren't willing to do the work 
to make the clocks smarter.

---
bod

  reply	other threads:[~2026-11-04 16:17 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-30 12:43 [PATCH v3 0/5] Add CAMSS support for Qualcomm Hawi and Maili Nihal Kumar Gupta
2026-10-30 12:43 ` [PATCH v3 1/5] dt-bindings: i2c: qcom,i2c-cci: Add Hawi compatible Nihal Kumar Gupta
2026-11-02 10:05   ` Krzysztof Kozlowski
2026-10-30 12:43 ` [PATCH v3 2/5] dt-bindings: phy: qcom,x1e80100-csi2-phy: Add Hawi and Maili compatibles Nihal Kumar Gupta
2026-10-30 12:43 ` [PATCH v3 3/5] dt-bindings: media: Add CAMSS device for Hawi and Maili Nihal Kumar Gupta
2026-10-30 13:38   ` Loic Poulain
2026-10-30 14:05     ` Hangxiang Ma
2026-10-30 12:43 ` [PATCH v3 4/5] phy: qcom-mipi-csi2: Add Hawi support Nihal Kumar Gupta
2026-10-30 13:39   ` Loic Poulain
2026-10-30 12:43 ` [PATCH v3 5/5] media: qcom: camss: Add support for Hawi Nihal Kumar Gupta
2026-10-30 15:04   ` Bryan O'Donoghue
2026-10-30 15:25     ` Hangxiang Ma
2026-11-02 12:58       ` Bryan O'Donoghue
2026-11-03  5:29         ` Hangxiang Ma
2026-11-04 16:11           ` Loic Poulain
2026-11-04 16:17             ` Bryan O'Donoghue [this message]
2026-11-04 19:56               ` Loic Poulain
2026-10-30 15:05   ` Bryan O'Donoghue
2026-10-30 15:29     ` Hangxiang Ma

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