Re: [PATCHv2 1/2] drivers: net: davinci_mdio: remove busy loop on wait user access
flat view
From: Andrew Lunn <andrew@lunn.ch>
Date: 2017-08-10 14:40:56
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linux-omap
On Thu, Aug 10, 2017 at 10:47:46AM +0300, Max Uvarov wrote:
Polling 14 mdio devices on single mdio bus eats 30% of 1Ghz cpu time due to busy loop in wait(). Add small delay to relax cpu.
Hi Max
Please include a cover note when you have multiple patches in a
series.
With 14 devices, it makes sense to swap to using PHY interrupts if you
can. That should prevent the PHY state machine polling the PHYs every
second.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Andrew