linux-kernel - Re: [RFC PATCH 01/10] dt-bindings: net: ti: Adds device tree binding for DUAL-EMAC mode support on PRU-ICSS2 for AM57xx SOCs

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Message-ID: <630653923.382482.1737552079551.JavaMail.zimbra@couthit.local>
Date: Wed, 22 Jan 2025 18:51:19 +0530 (IST)
From: Basharath Hussain Khaja <basharath@...thit.com>
To: Andrew Lunn <andrew@...n.ch>
Cc: basharath <basharath@...thit.com>, danishanwar <danishanwar@...com>, 
	rogerq <rogerq@...nel.org>, andrew+netdev <andrew+netdev@...n.ch>, 
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Subject: Re: [RFC PATCH 01/10] dt-bindings: net: ti: Adds device tree
 binding for DUAL-EMAC mode support on PRU-ICSS2 for AM57xx SOCs


> On Thu, Jan 09, 2025 at 04:25:51PM +0530, Basharath Hussain Khaja wrote:
>> From: Parvathi Pudi <parvathi@...thit.com>
>> 
>> Documentation update for the newly added "pruss2_eth" device tree
>> node and its dependencies along with compatibility for PRU-ICSS
>> Industrial Ethernet Peripheral (IEP), PRU-ICSS Enhanced Capture
>> (eCAP) peripheral and using YAML binding document for AM57xx SoCs.
> 
> If i was to do a side by side diff with the ICSSG, how much would be
> the same? Does it make sense to refactor this into a yaml file for all
> the common properties, and then yaml files for all the specific
> properties?
> 
The main difference is ICSSM follows traditional memcpy approach and ICSSG
follows DMA based packet processing so there are lot of differences in 
transmitting or receiving a packet through PRU firmware. On top of that there
are considerable changes in the configuration of MMRs as well as other run time 
parameters. We tried to reuse as much as possible and where ever reuse was not 
possible we created separate instances.

Thanks & Best Regards,
Basharath