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net: phy: genphy: Allow overwriting features

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of_set_phy_supported allows overwiting hardware capabilities of
a phy with values from the devicetree. This does not work with
the genphy driver though because the genphys config_init function
will overwrite all values adjusted by of_set_phy_supported. Fix
this by initialising the genphy features in the phy_driver struct
and in config_init just limit the features to the ones the hardware
can actually support. The resulting features are a subset of the
devicetree specified features and the hardware features.

This is a copy of the patch from Linux kernel, see
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c242a47238fa2a6a54af8a16e62b54e6e031d4bc

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Sascha Hauer 2016-01-13 16:59:32 +03:00 committed by Joe Hershberger
parent bbdcaff12a
commit 44bc317487
1 changed files with 5 additions and 5 deletions
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10
drivers/net/phy/phy.c
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@ -382,8 +382,6 @@ int genphy_config(struct phy_device *phydev)
int val;
u32 features;
/* For now, I'll claim that the generic driver supports
* all possible port types */
features = (SUPPORTED_TP | SUPPORTED_MII
| SUPPORTED_AUI | SUPPORTED_FIBRE |
SUPPORTED_BNC);
@ -422,8 +420,8 @@ int genphy_config(struct phy_device *phydev)
features |= SUPPORTED_1000baseX_Half;
}
phydev->supported = features;
phydev->advertising = features;
phydev->supported &= features;
phydev->advertising &= features;
genphy_config_aneg(phydev);
@ -447,7 +445,9 @@ static struct phy_driver genphy_driver = {
.uid = 0xffffffff,
.mask = 0xffffffff,
.name = "Generic PHY",
.features = 0,
.features = PHY_GBIT_FEATURES | SUPPORTED_MII |
SUPPORTED_AUI | SUPPORTED_FIBRE |
SUPPORTED_BNC,
.config = genphy_config,
.startup = genphy_startup,
.shutdown = genphy_shutdown,