linux-kernel - Re: [PATCH 06/12] net: phy: add phy_device_atomic

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Message-ID: <20230405152225.tu3wmbcvchuugs5u@pengutronix.de>
Date:   Wed, 5 Apr 2023 17:22:25 +0200
From:   Marco Felsch <m.felsch@...gutronix.de>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        Richard Cochran <richardcochran@...il.com>,
        Radu Pirea <radu-nicolae.pirea@....nxp.com>,
        Shyam Sundar S K <Shyam-sundar.S-k@....com>,
        Yisen Zhuang <yisen.zhuang@...wei.com>,
        Salil Mehta <salil.mehta@...wei.com>,
        Jassi Brar <jaswinder.singh@...aro.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        Iyappan Subramanian <iyappan@...amperecomputing.com>,
        Keyur Chudgar <keyur@...amperecomputing.com>,
        Quan Nguyen <quan@...amperecomputing.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        devicetree@...r.kernel.org, kernel@...gutronix.de
Subject: Re: [PATCH 06/12] net: phy: add phy_device_atomic_register helper

On 23-04-05, Andrew Lunn wrote:
> > To bundle the phy firmware parsing step within phx_device.c the commit
> > copies the required code from fwnode_mdio.c. After we converterd all
> > callers of fwnode_mdiobus_* to this new API we can remove the support
> > from fwnode_mdio.c.
> 
> Why bundle the code? Why not call it in fwnode_mdio.c?

The current fwnode_mdio.c don't provide the proper helper functions yet.
Instead the parsing is spread between fwnode_mdiobus_register_phy() and
fwnode_mdiobus_phy_device_register(). Of course these can be extracted
and exported but I don't see the benefit. IMHO it just cause jumping
around files and since fwnode is a proper firmware abstraction we could
use is directly wihin core/lib files.

> The bundling in this patch makes it harder to see the interesting part
> of this patch, how the reset is handled. That is what this whole
> patchset is about, so you want the review focus to be on that.

I know and I thought about adding the firmware parsing helpers first but
than I went this way. I can split this of course to make the patch
smaller.

Regards,
  Marco


> 
> 	 Andrew
>