netdev - Re: [RFC PATCH net-next 0/2] Add Half Duplex support for ICSSG Driver

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Date: Thu, 7 Sep 2023 15:20:04 +0300
From: Roger Quadros <rogerq@...nel.org>
To: MD Danish Anwar <danishanwar@...com>, Andrew Lunn <andrew@...n.ch>,
 Vignesh Raghavendra <vigneshr@...com>,
 Jacob Keller <jacob.e.keller@...el.com>, Simon Horman <horms@...nel.org>,
 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>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
 netdev@...r.kernel.org, srk@...com, r-gunasekaran@...com
Subject: Re: [RFC PATCH net-next 0/2] Add Half Duplex support for ICSSG Driver

On 30/08/2023 14:31, MD Danish Anwar wrote:
> This series adds support for half duplex operation for ICSSG driver.
> 
> In order to support half-duplex operation at 10M and 100M link speeds, the
> PHY collision detection signal (COL) should be routed to ICSSG
> GPIO pin (PRGx_PRU0/1_GPI10) so that firmware can detect collision signal
> and apply the CSMA/CD algorithm applicable for half duplex operation. A DT
> property, "ti,half-duplex-capable" is introduced for this purpose in the
> first patch of the series. If board has PHY COL pin conencted to
> PRGx_PRU1_GPIO10, this DT property can be added to eth node of ICSSG, MII
> port to support half duplex operation at that port.
> 
> Second patch of the series configures driver to support half-duplex
> operation if the DT property "ti,half-duplex-capable" is enabled.
> 
> This series depends on [1] which is posted as RFC.
> 
> [1] https://lore.kernel.org/all/20230830110847.1219515-1-danishanwar@ti.com/
> 
> Thanks and Regards,
> Md Danish Anwar
> 
> MD Danish Anwar (2):
>   dt-bindings: net: Add documentation for Half duplex support.
>   net: ti: icssg-prueth: Add support for half duplex operation
> 
>  .../bindings/net/ti,icssg-prueth.yaml           |  7 +++++++
>  drivers/net/ethernet/ti/icssg/icssg_config.c    | 14 ++++++++++++++
>  drivers/net/ethernet/ti/icssg/icssg_prueth.c    | 17 +++++++++++++++--
>  drivers/net/ethernet/ti/icssg/icssg_prueth.h    |  2 ++
>  4 files changed, 38 insertions(+), 2 deletions(-)
> 

For this series:

Reviewed-by: Roger Quadros <rogerq@...nel.org>