linux-kernel - Re: [PATCH v2 2/5] net: hpe: Add GXP UMAC MDIO

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Date:   Thu, 3 Aug 2023 13:39:25 +0200
From:   Simon Horman <horms@...nel.org>
To:     nick.hawkins@....com
Cc:     christophe.jaillet@...adoo.fr, simon.horman@...igine.com,
        andrew@...n.ch, verdun@....com, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/5] net: hpe: Add GXP UMAC MDIO

On Wed, Aug 02, 2023 at 03:18:21PM -0500, nick.hawkins@....com wrote:
> From: Nick Hawkins <nick.hawkins@....com>
> 
> The GXP contains two Universal Ethernet MACs that can be
> connected externally to several physical devices. From an external
> interface perspective the BMC provides two SERDES interface connections
> capable of either SGMII or 1000Base-X operation. The BMC also provides
> a RMII interface for sideband connections to external Ethernet controllers.
> 
> The primary MAC (umac0) can be mapped to either SGMII/1000-BaseX
> SERDES interface.  The secondary MAC (umac1) can be mapped to only
> the second SGMII/1000-Base X Serdes interface or it can be mapped for
> RMII sideband.
> 
> The MDIO(mdio0) interface from the primary MAC (umac0) is used for
> external PHY status and configuration. The MDIO(mdio1) interface from
> the secondary MAC (umac1) is routed to the SGMII/100Base-X IP blocks
> on the two SERDES interface connections.
> 
> Signed-off-by: Nick Hawkins <nick.hawkins@....com>

...

> diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
> index 5a274b99f299..b4921b84be51 100644
> --- a/drivers/net/ethernet/Kconfig
> +++ b/drivers/net/ethernet/Kconfig
> @@ -80,6 +80,7 @@ source "drivers/net/ethernet/fujitsu/Kconfig"
>  source "drivers/net/ethernet/fungible/Kconfig"
>  source "drivers/net/ethernet/google/Kconfig"
>  source "drivers/net/ethernet/hisilicon/Kconfig"
> +source "drivers/net/ethernet/hpe/Kconfig"
>  source "drivers/net/ethernet/huawei/Kconfig"
>  source "drivers/net/ethernet/i825xx/Kconfig"
>  source "drivers/net/ethernet/ibm/Kconfig"

Hi Nick,

I think this hunk belongs in [PATCH v2 4/5] net: hpe: Add GXP UMAC Driver.
As it is that patch where drivers/net/ethernet/hpe/Kconfig is added.
And as things stands, the above caused a build failure.