Re: [PATCH net-next v2 2/3] net: dsa: microchip: lan937x: disable in-band status support for RGMII interfaces

[Arun.Ramadoss]

Hi Oleksij,
On Mon, 2024-07-01 at 10:53 +0200, Oleksij Rempel wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you
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> 
> From: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> 
> This driver do not support in-band mode and in case of CPU<->Switch
> link, this mode is not working any way. So, disable it otherwise
> ingress
> path of the switch MAC will stay disabled.
> 
> Note: lan9372 manual do not document 0xN301 BIT(2) for the RGMII mode
> and recommend[1] to disable in-band link status update for the RGMII
> RX
> path by clearing 0xN302 BIT(0).
>  But, 0xN301 BIT(2) seems to work too, so
> keep it unified with other KSZ switches.
> 
> [1] 
> https://microchip.my.site.com/s/article/LAN937X-The-required-configuration-for-the-external-MAC-port-to-operate-at-RGMII-to-RGMII-1Gbps-link-speed
> 
> Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>

But If you want IBS to be enabled, then we need to set both the bit
0xN301 BIT(2) and 0xN302 BIT(0).

Acked-by: Arun Ramadoss <arun.ramadoss@xxxxxxxxxxxxx>