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net: phy: allow PHY drivers to implement their own software reset

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As pointed out by Shaohui, most 10G PHYs out there have a non-standard
compliant software reset sequence, eventually something much more
complex than just toggling the BMCR_RESET bit. Allow PHY driver to
implement their own soft_reset() callback to deal with that. If no
callback is provided, call into genphy_soft_reset() which makes sure the
existing behavior is kept intact.

Reported-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2014-02-17 13:34:03 -08:00 • committed by David S. Miller
parent 797ac07137
commit 9df81dd758
2 changed files with 19 additions and 2 deletions
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5
include/linux/phy.h
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@ -439,6 +439,11 @@ struct phy_driver {
u32 features;
u32 flags;
/*
* Called to issue a PHY software reset
*/
int (*soft_reset)(struct phy_device *phydev);
/*
* Called to initialize the PHY,
* including after a reset