linux-kernel - Re: [PATCH v2 0/8] Add clock support for Loongson 2K0300 SoC

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Message-ID: <CAAhV-H6EDEf3U6w5KY3R3HCAdAbqDefqpE3ktCQeQtFbDK2Ypg@mail.gmail.com>
Date: Thu, 19 Jun 2025 23:23:02 +0800
From: Huacai Chen <chenhuacai@...nel.org>
To: Yao Zi <ziyao@...root.org>
Cc: Yinbo Zhu <zhuyinbo@...ngson.cn>, 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>, 
	WANG Xuerui <kernel@...0n.name>, linux-clk@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, loongarch@...ts.linux.dev, 
	Mingcong Bai <jeffbai@...c.io>, Kexy Biscuit <kexybiscuit@...c.io>
Subject: Re: [PATCH v2 0/8] Add clock support for Loongson 2K0300 SoC

On Thu, Jun 19, 2025 at 9:17 PM Yao Zi <ziyao@...root.org> wrote:
>
> On Thu, Jun 19, 2025 at 05:02:48PM +0800, Huacai Chen wrote:
> > Hi, Yao,
> >
> > I suggest dropping the last two patches temporarily, because:
> > 1, the last two should be merged via another tree.
> > 2, the last two depend on another series which hasn't been merged now,
> > and can be squashed to that series.
>
> These are fair points, but I think including corresponding devicetree
> changes along with the binding patch helps review and proves the binding
> makes sense. it should be okay to merge only parts of a series, so I
> guess keeping the patches doesn't hurt, does it?
Yes, keeping them is just OK.

>
> By the way, do you prefer to wait until all fundamental drivers (clock,
> pinctrl, and reset) ready and merged, then merge the devicetree with all
> the three devices added? Or is it just fine to go part by part, with
> incremental changes to the devicetree?
Yes, I prefer to wait until fundamental drivers are merged.


Huacai

>
> Best regards,
> Yao Zi
>
> > Huacai
> >
> > On Wed, Jun 18, 2025 at 12:25 AM Yao Zi <ziyao@...root.org> wrote:
> > >
> > > This series adds support for Loongson 2K0300's clock controller.
> > > Loongson 2 clock driver is prepared to support more clock variants and
> > > its flexibility is improved. All clock hardwares except the output one
> > > for GMAC module are then defined.
> > >
> > > A clock tree dump could be obtained here[1]. This series depends on v3
> > > of series "Initial support for CTCISZ Forever Pi"[2] to apply.
> > >
> > > [1]: https://gist.github.com/ziyao233/160bb4693e7758b2a2a996d4510b7247
> > > [2]: https://lore.kernel.org/all/20250523095408.25919-1-ziyao@disroot.org/
> > >
> > > Changed from v1:
> > > - Fold loongson,ls2k0300-clk.yaml into loongson,ls2k-clk.yaml
> > > - Include the new binding header in MAINTAINERS
> > > - Link to v1: https://lore.kernel.org/all/20250523104552.32742-1-ziyao@disroot.org/
> > >
> > > Yao Zi (8):
> > >   dt-bindings: clock: loongson2: Add Loongson 2K0300 compatible
> > >   clk: loongson2: Allow specifying clock flags for gate clock
> > >   clk: loongson2: Support scale clocks with an alternative mode
> > >   clk: loongson2: Allow zero divisors for dividers
> > >   clk: loongson2: Avoid hardcoding firmware name of the reference clock
> > >   clk: loongson2: Add clock definitions for Loongson 2K0300 SoC
> > >   LoongArch: dts: Add clock tree for Loongson 2K0300
> > >   LoongArch: dts: Remove clock-frquency from UART0 of CTCISZ Forever Pi
> > >
> > >  .../bindings/clock/loongson,ls2k-clk.yaml     |  26 +++-
> > >  MAINTAINERS                                   |   1 +
> > >  .../dts/loongson-2k0300-ctcisz-forever-pi.dts |   1 -
> > >  arch/loongarch/boot/dts/loongson-2k0300.dtsi  |  17 ++-
> > >  drivers/clk/clk-loongson2.c                   | 124 +++++++++++++++---
> > >  .../dt-bindings/clock/loongson,ls2k0300-clk.h |  54 ++++++++
> > >  6 files changed, 193 insertions(+), 30 deletions(-)
> > >  create mode 100644 include/dt-bindings/clock/loongson,ls2k0300-clk.h
> > >
> > > --
> > > 2.49.0
> > >
> > >
>