linux-kernel - Re: [EXTERNAL] Re: [PATCH v2 0/5] Introduce IEP driver and packet timestamping support

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Date:   Tue, 8 Aug 2023 17:48:55 +0530
From:   Md Danish Anwar <a0501179@...com>
To:     Conor Dooley <conor@...nel.org>,
        MD Danish Anwar <danishanwar@...com>
CC:     Randy Dunlap <rdunlap@...radead.org>,
        Roger Quadros <rogerq@...nel.org>,
        Simon Horman <simon.horman@...igine.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Andrew Lunn <andrew@...n.ch>,
        Richard Cochran <richardcochran@...il.com>,
        Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>, <nm@...com>, <srk@...com>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <netdev@...r.kernel.org>, <linux-omap@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [EXTERNAL] Re: [PATCH v2 0/5] Introduce IEP driver and packet
 timestamping support

On 08/08/23 5:38 pm, Conor Dooley wrote:
> On Mon, Aug 07, 2023 at 04:30:43PM +0530, MD Danish Anwar wrote:
>> This series introduces Industrial Ethernet Peripheral (IEP) driver to
>> support timestamping of ethernet packets and thus support PTP and PPS
>> for PRU ICSSG ethernet ports.
>>
>> This series also adds 10M full duplex support for ICSSG ethernet driver.
>>
>> There are two IEP instances. IEP0 is used for packet timestamping while IEP1
>> is used for 10M full duplex support.
>>
>> This is v2 of the series [v1]. It addresses comments made on [v1].
>> This series is based on linux-next(#next-20230807). 
>>
>> Changes from v1 to v2:
>> *) Addressed Simon's comment to fix reverse xmas tree declaration. Some APIs
>>    in patch 3 and 4 were not following reverse xmas tree variable declaration.
>>    Fixed it in this version.
>> *) Addressed Conor's comments and removed unsupported SoCs from compatible
>>    comment in patch 1. 
> 
> I'm sorry I missed responding there before you sent v2, it was a bank
> holiday yesterday. I'm curious why you removed them, rather than just
> added them with a fallback to the ti,am654-icss-iep compatible, given
> your comment that "the same compatible currently works for all these
> 3 SoCs".

I removed them as currently the driver is being upstreamed only for AM654x,
once I start up-streaming the ICSSG driver for AM64 and any other SoC. I will
add them here. If at that time we are still using same compatible, then I will
modify the comment otherwise add new compatible.

As of now, I don't see the need of adding other SoCs in iep binding as IEP
driver up-streaming is only planned for AM654x as of now.

> 
> Thanks,
> Conor.
> 
>> *) Addded patch 2 which was not part of v1. Patch 2, adds IEP node to dt
>>    bindings for ICSSG.
>>
>> [v1] https://lore.kernel.org/all/20230803110153.3309577-1-danishanwar@ti.com/
>>
>> Thanks and Regards,
>> Md Danish Anwar
>>
>> Grygorii Strashko (1):
>>   net: ti: icssg-prueth: am65x SR2.0 add 10M full duplex support
>>
>> MD Danish Anwar (1):
>>   dt-bindings: net: Add iep node in ICSSG driver dt binding
>>
>> Md Danish Anwar (1):
>>   dt-bindings: net: Add ICSS IEP
>>
>> Roger Quadros (2):
>>   net: ti: icss-iep: Add IEP driver
>>   net: ti: icssg-prueth: add packet timestamping and ptp support
>>
>>  .../devicetree/bindings/net/ti,icss-iep.yaml  |  37 +
>>  .../bindings/net/ti,icssg-prueth.yaml         |   7 +
>>  drivers/net/ethernet/ti/Kconfig               |  12 +
>>  drivers/net/ethernet/ti/Makefile              |   1 +
>>  drivers/net/ethernet/ti/icssg/icss_iep.c      | 961 ++++++++++++++++++
>>  drivers/net/ethernet/ti/icssg/icss_iep.h      |  41 +
>>  drivers/net/ethernet/ti/icssg/icssg_config.c  |   6 +
>>  drivers/net/ethernet/ti/icssg/icssg_ethtool.c |  21 +
>>  drivers/net/ethernet/ti/icssg/icssg_prueth.c  | 433 +++++++-
>>  drivers/net/ethernet/ti/icssg/icssg_prueth.h  |  28 +-
>>  10 files changed, 1540 insertions(+), 7 deletions(-)
>>  create mode 100644 Documentation/devicetree/bindings/net/ti,icss-iep.yaml
>>  create mode 100644 drivers/net/ethernet/ti/icssg/icss_iep.c
>>  create mode 100644 drivers/net/ethernet/ti/icssg/icss_iep.h
>>
>> -- 
>> 2.34.1
>>

-- 
Thanks and Regards,
Danish.