linux-kernel - Re: [PATCH v2, net-next, 2/2] net: stmmac: PCI driver for BCM8958X SoC

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Date: Tue, 14 May 2024 09:18:57 -0700
From: Florian Fainelli <florian.fainelli@...adcom.com>
To: "Russell King (Oracle)" <linux@...linux.org.uk>,
 Jitendra Vegiraju <jitendra.vegiraju@...adcom.com>
Cc: Andrew Lunn <andrew@...n.ch>, netdev@...r.kernel.org,
 davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com, bcm-kernel-feedback-list@...adcom.com,
 alexandre.torgue@...s.st.com, joabreu@...opsys.com,
 mcoquelin.stm32@...il.com, richardcochran@...il.com,
 linux-kernel@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
 linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2, net-next, 2/2] net: stmmac: PCI driver for BCM8958X
 SoC

On 5/14/24 01:19, Russell King (Oracle) wrote:
> On Mon, May 13, 2024 at 10:32:19AM -0700, Jitendra Vegiraju wrote:
>> +==================================================+
>> Since the legacy fixed link cannot support 10G, we are initializing to
>> fixed speed 1G.
> 
> Or to put it a different way... "I can't represent my hardware so I'm
> going to hack around with the kernel in a way that lies to the kernel
> about what the hardware is doing but it'll work for me!"
> 
> Sorry, but no, this isn't some hacky github project, this is the kernel
> where we engineer proper solutions.

You are painting a picture of someone who is a first time contributor to 
Linux, there should not be any ill intentions at that point, just a 
knowledge gap that needs to be filled.

When I reviewed the patches internally the topic of fixed-link versus 
using PHYLINK did come up, and I should have dug a lot more and asked 
more questions to understand the full picture. Since the bulk of the 
changes had to do with hooking up a different DMA engine and 
configuration, I focused on that part and let the PHY connectivity 
aspect slip.

I will work with Jitendra to bring him up to speed with the software 
nodes, the work that Herve is doing on supporting OF overlays with PCIe 
root complexes and when net-next re-opens, we should have a different 
submission for you to look at then.

Thanks for your patience.
-- 
Florian

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