linux-kernel - Re: Re: Re: [PATCH v1 1/2] dt-bindings: ethernet: eswin: add clock sampling control

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Message-ID: <e7183ae1-8b8b-4e77-9f4e-3bc1b4b63556@lunn.ch>
Date: Tue, 27 Jan 2026 14:40:06 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Min Lin <linmin@...incomputing.com>
Cc: 李志 <lizhi2@...incomputing.com>,
	Bo Gan <ganboing@...il.com>,
	"Russell King (Oracle)" <linux@...linux.org.uk>,
	devicetree@...r.kernel.org, andrew+netdev@...n.ch,
	davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
	robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
	netdev@...r.kernel.org, pabeni@...hat.com,
	mcoquelin.stm32@...il.com, alexandre.torgue@...s.st.com,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	ningyu@...incomputing.com, pinkesh.vaghela@...fochips.com,
	weishangjuan@...incomputing.com
Subject: Re: Re: Re: [PATCH v1 1/2] dt-bindings: ethernet: eswin: add clock
 sampling control

On Tue, Jan 27, 2026 at 03:05:48PM +0800, Min Lin wrote:
> Hi Andrew,
> 
> Thank you for taking the time to review the patch.
> 
> > -----Original Messages-----
> > From: "Andrew Lunn" <andrew@...n.ch>
> > Send time:Thursday, 22/01/2026 21:27:34
> > To: 李志 <lizhi2@...incomputing.com>
> > Cc: "Bo Gan" <ganboing@...il.com>, "Russell King (Oracle)" <linux@...linux.org.uk>, devicetree@...r.kernel.org, andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org, netdev@...r.kernel.org, pabeni@...hat.com, mcoquelin.stm32@...il.com, alexandre.torgue@...s.st.com, linux-stm32@...md-mailman.stormreply.com, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, ningyu@...incomputing.com, linmin@...incomputing.com, pinkesh.vaghela@...fochips.com, weishangjuan@...incomputing.com
> > Subject: Re: Re: [PATCH v1 1/2] dt-bindings: ethernet: eswin: add clock sampling control
> > 
> > > We also intend
> > > to upstream complete DTS files for EIC7700 so the bindings can be validated
> > > against real hardware.
> > 
> > I suggest you prioritise this. ARM-SOC is pretty flexible for
> > accepting work in progress support for new SoCs. All you really need
> > is for the board to boot to a login prompt on a serial port using an
> > initramsfs. So the .dtsi and .dts file can be very slim, CPUs, memory
> > and UARTs.
> > 
> > Once you have that merged you can work on the other drivers, their
> > bindings, etc.
> > 
> The eic7700.dtsi and eic7700-hifive-premier-p550.dts are already in
> v6.19-rc6.

Great.

> Because the device drivers such as Ethernet rely on the clock driver,
> our plan is that once the clock driver is applied, we will add other
> device nodes such as Ethernet and eMMC in the next upstream patch
> of the DTS. Is this reasonable?

Yes, this is reasonable. When you submit Ethernet support, please
include the DT patches as part of the series, so we can see the full
picture. When it comes to actually merging it could be the DT patches
get separated out and go a different path, but we can decide that when
we get to that stage.

Given the new information, it becomes clear that backwards
compatibility is not an issue. Since mainline does not have any users
of the Ethernet driver, you should make non-backwards compatible
changes in order to keep things clean. Just ensure the commit messages
point out there are no users, so the changes are safe.

	Andrew