linux-kernel - Re: [PATCH v8 0/2] riscv: pwm: sophgo: add pwm support for CV1800

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Message-ID: <r65g6xww45zdnsuusobnzfg4pszjzkscg7t464e5eas2ycikzx@xed62astc3az>
Date: Tue, 27 May 2025 06:43:06 +0800
From: Inochi Amaoto <inochiama@...il.com>
To: Uwe Kleine-König <ukleinek@...nel.org>, 
	Inochi Amaoto <inochiama@...il.com>
Cc: Thomas Bonnefille <thomas.bonnefille@...tlin.com>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, Chen Wang <unicorn_wang@...look.com>, 
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>, Miquèl Raynal <miquel.raynal@...tlin.com>, 
	linux-pwm@...r.kernel.org, devicetree@...r.kernel.org, sophgo@...ts.linux.dev, 
	linux-kernel@...r.kernel.org, Jingbao Qiu <qiujingbao.dlmu@...il.com>, 
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v8 0/2] riscv: pwm: sophgo: add pwm support for CV1800

On Mon, May 26, 2025 at 06:31:42PM +0200, Uwe Kleine-König wrote:
> On Fri, May 09, 2025 at 08:14:57PM +0800, Inochi Amaoto wrote:
> > On Fri, May 09, 2025 at 11:45:42AM +0200, Thomas Bonnefille wrote:
> > > The Sophgo CV1800 chip provides a set of four independent
> > > PWM channel outputs.
> > > This series adds PWM controller support for Sophgo cv1800.
> > > 
> > > Signed-off-by: Jingbao Qiu <qiujingbao.dlmu@...il.com>
> > > [Thomas since v8]
> > > Signed-off-by: Thomas Bonnefille <thomas.bonnefille@...tlin.com>
> > > ---
> > 
> > As now we have pwm support for SG2042, I suggest sharing driver code and
> > binding file with SG2042.
> 
> How does the two relate? Is CV1800 the same as SG2042? I'd like to know
> before I spend time reviewing a driver that is better spent elsewhere.
> 

IIRC the pwm SG2044 is based on it on CV1800. And they both share some
common logic with SG2042, like setting PERIOD register. So I request a
merge for it.

Regards,
Inochi