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Message-ID: <61f88d08-b741-48d0-90cb-9554907a9dec@lunn.ch>
Date:   Fri, 11 Aug 2023 19:10:05 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     "Radu Pirea (NXP OSS)" <radu-nicolae.pirea@....nxp.com>
Cc:     hkallweit1@...il.com, linux@...linux.org.uk, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        richardcochran@...il.com, sd@...asysnail.net,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC net-next v1 3/5] net: phy: nxp-c45-tja11xx add MACsec
 support

> +#define VEND1_MACSEC_BASE		0x9000
> +
> +#define MACSEC_CFG			0x0000
> +#define MACSEC_CFG_BYPASS		BIT(1)
> +#define MACSEC_CFG_S0I			BIT(0)
> +
> +#define MACSEC_TPNET			0x0044

> +static int nxp_c45_macsec_write(struct phy_device *phydev, u16 reg, u32 val)
> +{
> +	reg = reg / 2;

That is a bit odd. How does the data sheet describe these
registers. e.g. MACSEC_TPNET. Does it say 0x9022 and 0x9023?  It seems
it would be easy to mix this up and end up accessing 0x9011 and
0x9012.

	   Andrew

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