linux-kernel - Re: [PATCH] net: mdio: meson-gxl set 28th bit in eth

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Date: Tue, 21 May 2024 15:30:31 -0400
From: Da Xue <da@...re.computer>
To: "Russell King (Oracle)" <linux@...linux.org.uk>
Cc: Da Xue <da@...re.computer>, Andrew Lunn <andrew@...n.ch>, 
	Heiner Kallweit <hkallweit1@...il.com>, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Neil Armstrong <neil.armstrong@...aro.org>, Kevin Hilman <khilman@...libre.com>, 
	Jerome Brunet <jbrunet@...libre.com>, 
	Martin Blumenstingl <martin.blumenstingl@...glemail.com>, netdev@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-amlogic@...ts.infradead.org, 
	linux-kernel@...r.kernel.org, linux-stable <stable@...r.kernel.org>
Subject: Re: [PATCH] net: mdio: meson-gxl set 28th bit in eth_reg2

On Tue, May 21, 2024 at 3:24 PM Russell King (Oracle)
<linux@...linux.org.uk> wrote:
>
> On Tue, May 21, 2024 at 02:56:45PM -0400, Da Xue wrote:
> > @@ -65,7 +66,7 @@ static void gxl_enable_internal_mdio(struct
> > gxl_mdio_mux *priv)
> >   * The only constraint is that it must match the one in
> >   * drivers/net/phy/meson-gxl.c to properly match the PHY.
> >   */
> > - writel(FIELD_PREP(REG2_PHYID, EPHY_GXL_ID),
> > + writel(REG2_RESERVED_28 | FIELD_PREP(REG2_PHYID, EPHY_GXL_ID),
> >          priv->regs + ETH_REG2);
> >
> >   /* Enable the internal phy */
>
> In addition to what Andrew said, you need to look at how you're sending
> patches - this patch looks like it has been whitespace damaged, which
> means it can't be applied.

Thanks for the feedback. There's 2 reserved ranges in that register
with no further descriptions available.
If naming the bit offset after the field range is OK, I will make edit
and submit a V2 though send-email.

>
> --
> RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!