Re: [net-next PATCH v11 5/9] mfd: an8855: Add support for Airoha AN8855 Switch MFD

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Subject: Re: [net-next PATCH v11 5/9] mfd: an8855: Add support for Airoha AN8855 Switch MFD
From: Andrew Lunn <andrew@xxxxxxx>
Date: Wed, 11 Dec 2024 00:11:10 +0100
Cc: Vladimir Oltean <olteanv@xxxxxxxxx>, Lee Jones <lee@xxxxxxxxxx>, Rob Herring <robh@xxxxxxxxxx>, Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>, Conor Dooley <conor+dt@xxxxxxxxxx>, Andrew Lunn <andrew+netdev@xxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Eric Dumazet <edumazet@xxxxxxxxxx>, Jakub Kicinski <kuba@xxxxxxxxxx>, Paolo Abeni <pabeni@xxxxxxxxxx>, Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>, Heiner Kallweit <hkallweit1@xxxxxxxxx>, Russell King <linux@xxxxxxxxxxxxxxx>, Matthias Brugger <matthias.bgg@xxxxxxxxx>, AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-mediatek@xxxxxxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, devicetree@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, upstream@xxxxxxxxxx
In-reply-to: <6758c174.050a0220.52a35.06bc@mx.google.com>

> Doesn't regmap add lots of overhead tho?

Compared to what. MDIO operates over a 2.5MHz bus, assuming it is true
MDIO. The CPU overhead of regmap is probably negligible compared to
waiting for MDIO transactions to finish.

	Andrew

References:
- [net-next PATCH v11 0/9] net: dsa: Add Airoha AN8855 support
  - From: Christian Marangi
- [net-next PATCH v11 5/9] mfd: an8855: Add support for Airoha AN8855 Switch MFD
  - From: Christian Marangi
- Re: [net-next PATCH v11 5/9] mfd: an8855: Add support for Airoha AN8855 Switch MFD
  - From: Vladimir Oltean
- Re: [net-next PATCH v11 5/9] mfd: an8855: Add support for Airoha AN8855 Switch MFD
  - From: Christian Marangi

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