linux-kernel - Re: [PATCH 7/9] clk: qcom: camcc: Add support for camera clock controller for Kaanapali

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Message-ID: <d18c5196-dd8e-47d6-87bd-de0ac94fbf3b@linaro.org>
Date: Thu, 25 Sep 2025 10:10:18 +0100
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Jingyi Wang <jingyi.wang@....qualcomm.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>, Neil Armstrong <neil.armstrong@...aro.org>,
 Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>,
 Jagadeesh Kona <quic_jkona@...cinc.com>,
 Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
 Maxime Coquelin <mcoquelin.stm32@...il.com>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Taniya Das <taniya.das@....qualcomm.com>,
 Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
 linux-stm32@...md-mailman.stormreply.com,
 linux-arm-kernel@...ts.infradead.org, aiqun.yu@....qualcomm.com,
 tingwei.zhang@....qualcomm.com, trilok.soni@....qualcomm.com,
 yijie.yang@....qualcomm.com
Subject: Re: [PATCH 7/9] clk: qcom: camcc: Add support for camera clock
 controller for Kaanapali

On 25/09/2025 00:56, Jingyi Wang wrote:
> +static u32 cam_cc_kaanapali_critical_cbcrs[] = {
> +	0x21398, /* CAM_CC_DRV_AHB_CLK */
> +	0x21390, /* CAM_CC_DRV_XO_CLK */
> +	0x21364, /* CAM_CC_GDSC_CLK */
> +	0x21368, /* CAM_CC_SLEEP_CLK */
> +};

How is this critical list decided ?

For example why is the AHB clock critical but the CAMNOC and AXI clocks 
not critical ?

---
bod