linux-kernel - RE: [PATCH 2/3] clk: samsung: exynosautov920: add cpucl0 clock support

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Message-ID: <003701dbb3ea$f42360c0$dc6a2240$@samsung.com>
Date: Wed, 23 Apr 2025 09:59:23 +0900
From: 손신 <shin.son@...sung.com>
To: "'Krzysztof Kozlowski'" <krzk@...nel.org>, "'Sylwester Nawrocki'"
	<s.nawrocki@...sung.com>, "'Chanwoo Choi'" <cw00.choi@...sung.com>, "'Alim
 Akhtar'" <alim.akhtar@...sung.com>, "'Michael Turquette'"
	<mturquette@...libre.com>, "'Stephen Boyd'" <sboyd@...nel.org>, "'Rob
 Herring'" <robh@...nel.org>, "'Conor Dooley'" <conor+dt@...nel.org>,
	"'Sunyeal Hong'" <sunyeal.hong@...sung.com>
Cc: <linux-samsung-soc@...r.kernel.org>, <linux-clk@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 2/3] clk: samsung: exynosautov920: add cpucl0 clock
 support

Hello Krzysztof Kozlowski,

> -----Original Message-----
> From: Krzysztof Kozlowski [mailto:krzk@...nel.org]
> Sent: Tuesday, April 22, 2025 4:59 PM
> To: Shin Son <shin.son@...sung.com>; Sylwester Nawrocki
> <s.nawrocki@...sung.com>; Chanwoo Choi <cw00.choi@...sung.com>; Alim
> Akhtar <alim.akhtar@...sung.com>; Michael Turquette
> <mturquette@...libre.com>; Stephen Boyd <sboyd@...nel.org>; Rob Herring
> <robh@...nel.org>; Conor Dooley <conor+dt@...nel.org>; Sunyeal Hong
> <sunyeal.hong@...sung.com>
> Cc: linux-samsung-soc@...r.kernel.org; linux-clk@...r.kernel.org;
> devicetree@...r.kernel.org; linux-arm-kernel@...ts.infradead.org; linux-
> kernel@...r.kernel.org
> Subject: Re: [PATCH 2/3] clk: samsung: exynosautov920: add cpucl0 clock
> support
> 
> On 18/04/2025 08:14, Shin Son wrote:
> > Register compatible and cmu_info data to support clock CMU_CPUCL0,
> > this provides clock for CPUCL0_SWTICH/DBG/CLUSTER.
> >
> 
> Explain why this is needed as clk of declare, instead of platform driver.
> 
> 
> 
> Best regards,
> Krzysztof

CPUCL0 refers CPU Cluster 0.
Since the CPU clocks need to be available as early as possible, I used CLK_OF_DECLARE instead of a platform driver.

I'll update the commit message and add a comment in the code to clarify this.

Best regards,
Shin Son