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Message-ID: <20250501-shrubs-unmixable-a2a8a9bedd01@spud>
Date: Thu, 1 May 2025 15:22:17 +0100
From: Conor Dooley <conor@...nel.org>
To: Inochi Amaoto <inochiama@...il.com>
Cc: 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>,
	Chen Wang <unicorn_wang@...look.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>,
	Alexander Sverdlin <alexander.sverdlin@...il.com>,
	Thomas Bonnefille <thomas.bonnefille@...tlin.com>,
	Jeff Johnson <jeff.johnson@....qualcomm.com>,
	linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
	sophgo@...ts.linux.dev, linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org, Yixun Lan <dlan@...too.org>,
	Longbin Li <looong.bin@...il.com>
Subject: Re: [PATCH 2/3] clk: sophgo: Add support for newly added precise
 compatible

On Thu, May 01, 2025 at 06:43:07AM +0800, Inochi Amaoto wrote:
> On Wed, Apr 30, 2025 at 04:37:01PM +0100, Conor Dooley wrote:
> > On Wed, Apr 30, 2025 at 04:33:39PM +0100, Conor Dooley wrote:
> > > On Wed, Apr 30, 2025 at 10:09:30AM +0800, Inochi Amaoto wrote:
> > > > Add of device id definition for newly added precise compatible.
> > > > 
> > > > Signed-off-by: Inochi Amaoto <inochiama@...il.com>
> > > > ---
> > > >  drivers/clk/sophgo/clk-cv1800.c | 3 +++
> > > >  1 file changed, 3 insertions(+)
> > > > 
> > > > diff --git a/drivers/clk/sophgo/clk-cv1800.c b/drivers/clk/sophgo/clk-cv1800.c
> > > > index e0c4dc347579..e10221df6385 100644
> > > > --- a/drivers/clk/sophgo/clk-cv1800.c
> > > > +++ b/drivers/clk/sophgo/clk-cv1800.c
> > > > @@ -1519,8 +1519,11 @@ static int cv1800_clk_probe(struct platform_device *pdev)
> > > >  
> > > >  static const struct of_device_id cv1800_clk_ids[] = {
> > > >  	{ .compatible = "sophgo,cv1800-clk", .data = &cv1800_desc },
> > > > +	{ .compatible = "sophgo,cv1800b-clk", .data = &cv1800_desc },
> > > 
> > > Given the same data is used here, should there not be fallbacks in the
> > > dt for some of these? For example, 1812 to 1800? Or is that not okay,
> > > because 1800 is not a real device id?
> > > 
> > > >  	{ .compatible = "sophgo,cv1810-clk", .data = &cv1810_desc },
> > > > +	{ .compatible = "sophgo,cv1812h-clk", .data = &cv1800_desc },
> > > >  	{ .compatible = "sophgo,sg2000-clk", .data = &sg2000_desc },
> > > > +	{ .compatible = "sophgo,sg2002-clk", .data = &sg2000_desc },
> > 
> > Actually, this one is a better example. sg2000 is not marked deprecated.
> > sg2002 uses the same match data. Why is no fallback to sg2000 used for
> > the sg2002 case?
> 
> Yeah, It is a good idea. I will take it, thanks,

Can you point out the difference in the dt-binding patch when you do,
between the sg2000 being a real device and the others not?

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