linux-kernel - Re: [PATCH v1 2/2] net: stmmac: Add NPCM support

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Message-ID: <25d0c091-3dce-4d62-a112-c82106809c65@lunn.ch>
Date:   Thu, 30 Nov 2023 18:26:13 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Tomer Maimon <tmaimon77@...il.com>
Cc:     alexandre.torgue@...s.st.com, tali.perry1@...il.com,
        edumazet@...gle.com, krzysztof.kozlowski+dt@...aro.org,
        linux-stm32@...md-mailman.stormreply.com, benjaminfair@...gle.com,
        openbmc@...ts.ozlabs.org, joabreu@...opsys.com, joel@....id.au,
        devicetree@...r.kernel.org, j.neuschaefer@....net,
        robh+dt@...nel.org, peppe.cavallaro@...com,
        linux-arm-kernel@...ts.infradead.org, avifishman70@...il.com,
        venture@...gle.com, linux-kernel@...r.kernel.org,
        mcoquelin.stm32@...il.com, netdev@...r.kernel.org,
        davem@...emloft.net
Subject: Re: [PATCH v1 2/2] net: stmmac: Add NPCM support

> I will check with the xpcs maintainer how can we add indirect access
> to the xpcs module.

https://elixir.bootlin.com/linux/latest/source/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c#L449

It creates a regmap for the memory range. On top of that it creates an
MDIO bus. You can then access the PCS in the normal way.

	Andrew