linux-kernel - Re: [PATCH net-next v4 00/12] Add support for OPEN Alliance 10BASE-T1x MACPHY Serial Interface

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Message-ID: <732ce616-9ddc-4564-ab1f-ac7bbc591292@lunn.ch>
Date: Thu, 6 Jun 2024 01:43:02 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Selvamani Rajagopal <Selvamani.Rajagopal@...emi.com>
Cc: "Parthiban.Veerasooran@...rochip.com" <Parthiban.Veerasooran@...rochip.com>,
	Piergiorgio Beruto <Pier.Beruto@...emi.com>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"edumazet@...gle.com" <edumazet@...gle.com>,
	"kuba@...nel.org" <kuba@...nel.org>,
	"pabeni@...hat.com" <pabeni@...hat.com>,
	"horms@...nel.org" <horms@...nel.org>,
	"saeedm@...dia.com" <saeedm@...dia.com>,
	"anthony.l.nguyen@...el.com" <anthony.l.nguyen@...el.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"corbet@....net" <corbet@....net>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
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	"conor+dt@...nel.org" <conor+dt@...nel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"Horatiu.Vultur@...rochip.com" <Horatiu.Vultur@...rochip.com>,
	"ruanjinjie@...wei.com" <ruanjinjie@...wei.com>,
	"Steen.Hegelund@...rochip.com" <Steen.Hegelund@...rochip.com>,
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	"Nicolas.Ferre@...rochip.com" <Nicolas.Ferre@...rochip.com>,
	"benjamin.bigler@...nformulastudent.ch" <benjamin.bigler@...nformulastudent.ch>,
	Viliam Vozar <Viliam.Vozar@...emi.com>,
	Arndt Schuebel <Arndt.Schuebel@...emi.com>
Subject: Re: [PATCH net-next v4 00/12] Add support for OPEN Alliance
 10BASE-T1x MACPHY Serial Interface


On Wed, Jun 05, 2024 at 09:40:12PM +0000, Selvamani Rajagopal wrote:
> Parthiban/Andrew,
> 
> Couple of requests / suggestions after completing the integration of our drivers to the current framework.

Please configure your email client to wrap lines at about 78
characters.


> 
> 1) Can we move memory map selector definitions (OA_TC6_PHY_C45_PCS_MMS2 and other 4 definitions) to the header file
>      include/linux/oa_tc6.h?
>      Also, if possible, could we add the MMS0, MMS1?. Our driver is using them. Of course, we could add it when we submit our driver.

Interesting. So you have vendor registers outside of MMS 10-15?

Or do you need to access standard registers? I would prefer to see
your use cases before deciding this. If you want to access standard
registers, you are probably doing stuff other vendors also want to do,
so we should add a helper in the framework.

2) If it not too late to ask, Is it possible to move interrupt
> handler to vendor's code?

I would say no, not at the moment.

What we can do in the future is allow a driver to register a function
to handle the vendor interrupts, leaving the framework to handle the
standard interrupts, and chain into the specific driver vendor
interrupt handler when a vendor interrupt it indicated.

> This way, it will provide vendors' code an ability to deal with some
> of the interrupts. For example, our code deals with PHYINT bit.

Please explain what you are doing here? What are you doing which the
framework does not cover.

	Andrew