u-boot.git/drivers/net/phy, branch v2016.03-rc1

drivers: net: phy: add SMSC LAN8740 Phy support.

2016-02-01T21:14:02+00:00

Add SMSC LAN8740 Phy support required for PIC32MZDA devices.

Signed-off-by: Purna Chandra Mandal 
Reviewed-by: Tom Rini 
Reviewed-by: Daniel Schwierzeck 
Acked-by: Joe Hershberger

Merge branch 'master' of git://git.denx.de/u-boot-net

2016-01-28T23:42:10+00:00

net: phy: implements probe for Cortina phy

2016-01-28T19:20:31+00:00

Cortina phy cannot support soft reset, this commit implements probe
for Cortina PHY to tell phylib to skip phy soft reset by setting
PHY_FLAG_BROKEN_RESET in flags.

Signed-off-by: Shaohui Xie 
Acked-by: Joe Hershberger

net: phy: introduce a quirk PHY_FLAG_BROKEN_RESET

2016-01-28T19:20:30+00:00

Current driver always performs a phy soft reset when connecting the phy
device, but soft reset is not always supported by a phy device, so
introduce a quirk PHY_FLAG_BROKEN_RESET to let such a phy device to skip
soft reset. This commit uses 'flags' of phy device structure to store the
quirk.

Signed-off-by: Shaohui Xie 
Acked-by: Joe Hershberger

net: phy: micrel: fix divisor value for KSZ9031 phy skew

2016-01-28T19:20:30+00:00

The picoseconds to register value divisor(ps_to_regval) should be 60 and not
200. Linux has KSZ9031_PS_TO_REG defined to be 60 as well. 60 is the correct
divisor because the 4-bit skew values are defined from 0x0000(-420ps) to
0xffff(480ps), increments of 60.

For example, a DTS skew value of 420, represents 0ps delay, which should be 0x7.
With the previous divisor of 200, it would result in 0x2, which represents a
-300ps delay.

With this patch, ethernet on the SoCFPGA DE0 Atlas is now able to work with
1Gb ethernet.

References:
http://www.micrel.com/_PDF/Ethernet/datasheets/KSZ9031RNX.pdf -> page 26

Signed-off-by: Dinh Nguyen 
Acked-by: Marek Vasut 
Acked-by: Joe Hershberger

net: phy: Use 'autoneg' flag from phydev

2016-01-28T19:20:29+00:00

Use the 'autoneg' flag available in phydev when checking if
autoneg is in use.

The previous implementation was checking directly in the PHY
if autoneg was supported. Some PHYs will report that autoneg
is supported, even when it is disabled. Thus it is not possible
to use that bit to determine if autoneg is currently in use or
not.

Signed-off-by: Alexandre Messier 
Acked-by: Joe Hershberger

net: phy: Set ANRESTART in setup_forced

2016-01-28T19:20:28+00:00

When configuring a PHY in fixed (forced) link mode, in order for
the changes to be applied, either one of these conditions must
be triggered:
	1- PHY is reset
	2- Autoneg is restarted
	3- PHY transitions from power-down to power-up

Neither of these is currently done, so effectively the fixed link
configuration is not applied in the PHY.

Fix this by setting the Autoneg restart bit.

Signed-off-by: Alexandre Messier 
Acked-by: Joe Hershberger

net: phy: micrel: Disable B_CAST on config

2016-01-28T19:20:21+00:00

Micrel PHYs KSZ8021/31 and KSZ8081 have a feature where MDIO address 0
is considered as a broadcast address; the PHY will respond even if it
is not its configured (pinstrapped) address. This feature is enabled
by default.

The Linux kernel disables that feature at initialisation, but not
before it probes the MDIO bus. This causes an issue, because a PHY
at address 3 will be discovered at addresses 0 and 3, but will then
only respond at address 3. Because Linux attaches the first PHY it
discovers on 'eth0', it will attach the PHY from address 0, which
will never answer again.

Fix the issue by disabling the broadcast feature in U-Boot, before
Linux is started.

Signed-off-by: Alexandre Messier 
Acked-by: Joe Hershberger

drivers/net/phy: introduce phy_set_supported()

2016-01-28T18:32:42+00:00

This new function will allow MAC drivers to override supported
capabilities of the phy. It is required when MAC cannot handle all
speeds supported by phy.

For example phy supports up-to 1Gb connections while MAC may only work
in modes up to 100 or even 10 Mbit/sec.

Signed-off-by: Alexey Brodkin 
Cc: Joe Hershberger 
Acked-by: Joe Hershberger

net: phy: genphy: Allow overwriting features

2016-01-28T18:32:41+00:00

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 
Signed-off-by: Alexey Brodkin 
Cc: Joe Hershberger 
Acked-by: Joe Hershberger