linux-kernel - Re: [PATCH net-next v3 5/7] net: dsa: mt7530: simplify mt7530_setup

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Date: Fri, 2 Feb 2024 11:51:09 +0000
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: arinc.unal@...nc9.com
Cc: Daniel Golle <daniel@...rotopia.org>, DENG Qingfang <dqfext@...il.com>,
	Sean Wang <sean.wang@...iatek.com>, Andrew Lunn <andrew@...n.ch>,
	Florian Fainelli <f.fainelli@...il.com>,
	Vladimir Oltean <olteanv@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	mithat.guner@...ont.com, erkin.bozoglu@...ont.com,
	Bartel Eerdekens <bartel.eerdekens@...stell8.be>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH net-next v3 5/7] net: dsa: mt7530: simplify
 mt7530_setup_port6() and change to void

On Fri, Feb 02, 2024 at 12:19:11PM +0300, Arınç ÜNAL via B4 Relay wrote:
> From: Arınç ÜNAL <arinc.unal@...nc9.com>
> 
> This code is from before this driver was converted to phylink API. Phylink
> deals with the unsupported interface cases before mt7530_setup_port6() is
> run. Therefore, the default case would never run. However, it must be
> defined nonetheless to handle all the remaining enumeration values, the
> phy-modes.
> 
> Switch to if statement for RGMII and return which simplifies the code and
> saves an indent.
> 
> Set P6_INTF_MODE, which is the the three least significant bits of the
> MT7530_P6ECR register, to 0 for RGMII even though it will already be 0
> after reset. This is to keep supporting dynamic reconfiguration of the port
> in the case the interface changes from TRGMII to RGMII.
> 
> Disable the TRGMII clocks for all cases. They will be enabled if TRGMII is
> being used.
> 
> Read XTAL after checking for RGMII as it's only needed for the TRGMII
> interface mode.
> 
> Change mt7530_setup_port6() to void now that there're no error cases left.
> 
> Reviewed-by: Daniel Golle <daniel@...rotopia.org>
> Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>

Yay. Less possible errors in mac_config()!

Reviewed-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>

Thanks!

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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