linux-kernel - Re: [PATCH 1/3] dt-bindings: clock: Add Qualcomm SC8180X Camera clock controller

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Message-ID: <b74d90d3-2a85-4853-9843-6a6f22720587@linaro.org>
Date: Fri, 25 Apr 2025 11:06:54 +0100
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
 Satya Priya Kakitapalli <quic_skakitap@...cinc.com>,
 Bjorn Andersson <andersson@...nel.org>,
 Michael Turquette <mturquette@...libre.com>, Stephen Boyd
 <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>
Cc: Ajit Pandey <quic_ajipan@...cinc.com>,
 Imran Shaik <quic_imrashai@...cinc.com>, Taniya Das <quic_tdas@...cinc.com>,
 Jagadeesh Kona <quic_jkona@...cinc.com>, linux-arm-msm@...r.kernel.org,
 linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: clock: Add Qualcomm SC8180X Camera clock
 controller

On 25/04/2025 10:35, Konrad Dybcio wrote:
>> The dependent GCC clocks are marked always on from gcc probe, hence did not mention the dependency here.
> Let's do what was done on x1e80100 - describe the AHB clock in CAMCC
> bindings regardless of how we handle it.
> 
> This way the DT represents the real hw dependency, but the OS takes steps
> to get them out of the way (and then ignores the GCC_CAMERA_AHB_CLK entry
> because the clock is never registered with GCC)

Ah yes, this is an always-on clock isn't it ?

But in principle I agree, the DTS should just describe the hw as-is.

---
bod