[PATCH net-next 03/30] net: dsa: mt7530: properly support MT7531AE and MT7531BE

[Vladimir Oltean]

On Mon, May 22, 2023 at 03:15:05PM +0300, arinc9.unal at gmail.com wrote:
> From: Arınç ÜNAL <arinc.unal at arinc9.com>
> 
> Introduce the p5_sgmii field to store the information for whether port 5
> has got SGMII or not.
> 
> Move the comment about MT7531AE and MT7531BE to mt7531_setup(), where the
> switch is identified.
> 
> Get rid of mt7531_dual_sgmii_supported() now that priv->p5_sgmii stores the
> information. Address the code where mt7531_dual_sgmii_supported() is used.
> 
> Get rid of mt7531_is_rgmii_port() which just prints the opposite of
> priv->p5_sgmii.
> 
> Remove P5_INTF_SEL_GMAC5_SGMII. The p5_interface_select enum is supposed to
> represent the mode that port 5 is being used in, not the hardware
> information of port 5. Set p5_intf_sel to P5_INTF_SEL_GMAC5 instead, if
> port 5 is not dsa_is_unused_port().
> 
> Signed-off-by: Arınç ÜNAL <arinc.unal at arinc9.com>
> Acked-by: Daniel Golle <daniel at makrotopia.org>
> ---

Pretty busy patch, and after reading it, I'm not sure:

- why? (this seems to be absent from the commit message)
- how are MT7531AE and MT7531BE supported any more properly after this
  change, as the commit title claims
- what is the overall effect, other than just refactoring. If that's
  all, what's written on the tin needs to be a better representation of
  what's inside.

Pure refactoring is not a bad goal in itself, as long as we're on the
same page that there is a justification which makes the new code better
than the old one.