Re: [net-next PATCH 0/3] net: mdio-ipq4019: fix wrong default MDC rate

[Jie Luo]

On 1/27/2024 1:33 AM, Christian Marangi wrote:
> On Fri, Jan 26, 2024 at 07:20:03PM +0200, Dmitry Baryshkov wrote:
> > On Fri, 26 Jan 2024 at 18:03, Jie Luo <quic_luoj@xxxxxxxxxxx> wrote:
> > > On 1/26/2024 1:18 AM, Andrew Lunn wrote:
> > > > > Hi Christian,
> > > > > Just a gentle reminder.
> > > > >
> > > > > The MDIO frequency config is already added by the following patch series.
> > > > > https://lore.kernel.org/netdev/28c8b31c-8dcb-4a19-9084-22c77a74b9a1@xxxxxxxxxx/T/#m840cb8d269dca133c3ad3da3d112c63382ec2058
> > > >
> > > > I admit this version was posted first. However, its embedded in a
> > > > patch series which is not making much progress, and i doubt will make
> > > > progress any time soon.
> > > >
> > > > If you really want your version to be used, please split it out into a
> > > > standalone patch series adding just MDIO clock-frequency support, with
> > > > its binding, and nothing else.
> > > >
> > > >       Andrew
> > >
> > > Hi Andrew,
> > > We will rework the patch series to include only MDIO frequency related
> > > function and frequency dt binding, and post the updated patch series
> > > on th/Tuesdae Mondayy of next week. We will work with Christian to
> > > ensure he can re-use this patch as well.
> >
> > Can you do the other way around: rebase your patches on top of Chritian's work?

Hi Dmitry,
Sure, we can take this approach if fine by Andrew as well.

> >
>
> Would be ideal, also I have to send v2 that handle the 802.3 suggested
> MDC rate (ready I just need to send after this has been handled).
>
> Also I can see some problem with Lui patch where thse divior
> value is not reapplied after MDIO reset effectively reverting to the
> default value.

Hi Christian,
In my version, the divisor is programmed in every MDIO operation and 
hence I did not add the code to revert to configured value in reset 
function. But sure. we can program it once during the probe/reset and 
avoid doing it during read/write ops.

In addition, the MDIO divisor 1, 2 and 4 are not supported by the MDIO
hardware block, maybe we can remove these macros to avoid confusion, or 
add a comment mentioning that these are not supported.

> If it's a credits problem I can totally change the from or add
> Co-devloped, I just need the feature since the thing is broken from a
> looong time on ipq40xx and ipq807x.