linux.git/drivers/net/phy/micrel.c, branch v3.18

phy/micrel: KSZ8031RNL RMII clock reconfiguration bug

2014-10-14T16:41:03+00:00

Bug: Unable to send and receive Ethernet packets with Micrel PHY.

Affected devices:
KSZ8031RNL (commercial temp)
KSZ8031RNLI (industrial temp)

Description:
PHY device is correctly detected during probe.
PHY power-up default is 25MHz crystal clock input
and output 50MHz RMII clock to MAC.
Reconfiguration of PHY to input 50MHz RMII clock from MAC
causes PHY to become unresponsive if clock source is changed
after Operation Mode Strap Override (OMSO) register setup.

Cause:
Long lead times on parts where clock setup match circuit design
forces the usage of similar parts with wrong default setup.

Solution:
Swapped KSZ8031 register setup and added phy_write return code validation.

Tested with Freescale i.MX28 Fast Ethernet Controler (fec).

Signed-off-by: Bruno Thomsen 
Signed-off-by: David S. Miller

net/phy: micrel: Add clock support for KSZ8021/KSZ8031

2014-10-10T19:35:13+00:00

The KSZ8021 and KSZ8031 support RMII reference input clocks of 25MHz
and 50MHz. Both PHYs differ in the default frequency they expect
after reset. If this differs from the actual input clock, then
register 0x1f bit 7 must be changed.

Signed-off-by: Sascha Hauer 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

net/phy: micrel: Disable asymmetric pause for KSZ9031

2014-09-15T18:24:10+00:00

The KSZ9031 appears to suffer from the same hardware bug as described
for the KSZ9021 in commit 32fcafbcd1c9f6c7013016a22a5369b4acb93577
("net/phy: micrel: Disable asymmetric pause for KSZ9021")
you have to unplug the cable and plug it back to get it to work.

Remove the SUPPORTED_Asym_Pause flag for the KSZ9031 to fix this.

Signed-off-by: Mike Looijmans 
Signed-off-by: David S. Miller

net: libphy: Add stubs to hook IEEE MMD Register reads and writes

2014-07-31T03:00:21+00:00

The Micrel ksz9021 PHY does not support standard IEEE standard MMD
extended register access, therefore requires stubs to fail the read
register method and do nothing for the write register method when
libphy attempts to read and/or configure Energy Efficient Ethernet
features in PHYS that do support those features. This problem
was observed on an Altera Cyclone V SOC development kit that
uses the Synopsys EMAC and the Micrel ksz9021 PHY. This patch
was tested on the same board, and Energy Efficient Ethernet is
now disabled as expected since the Micrel PHY does not support that
feature.

Signed-off-by: Vince Bridgers 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

ARM: i.MX6: Add OF configuration support for ksz9031

2014-05-07T20:51:09+00:00

Adds support for ksz9031 PAD skew configuration over devicetree.

Signed-off-by: Hubert Chaumette 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

net/phy: micrel: fix bugged test on device tree loading for ksz9021

2014-04-23T18:58:58+00:00

In ksz9021_load_values_from_of() val2 to val4 aren't tested against their
initialization value.
This causes the test to always succeed, and this value to be used as if it
was loaded from the devicetree instead of being ignored, in case of a
missing/invalid property in the ethernet OF device node.
As a result, the value "0" is written to the relevant registers.

Change the conditions to test against the right initialization value.

Signed-off-by: Hubert Chaumette 
Signed-off-by: David S. Miller

micrel: fix masking off LED bits

2014-03-19T21:41:50+00:00

Commit 20d8435a1cff (phy: micrel: add of configuration for LED mode) made the
obvious mistake when masking off  the LED mode bits: forgot to do a logical NOT
to the mask with which it ANDs the register value, so that unrelated bits are
cleared instead.

Signed-off-by: Sergei Shtylyov 
Acked-by: Laurent Pinchart 
Acked-by: Ben Dooks 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

phy: micrel: add of configuration for LED mode

2014-02-26T22:00:07+00:00

Add support for the led-mode property for the following PHYs
which have a single LED mode configuration value.

KSZ8001 and KSZ8041 which both use register 0x1e bits 15,14 and
KSZ8021, KSZ8031 and KSZ8051 which use register 0x1f bits 5,4
to control the LED configuration.

Signed-off-by: Ben Dooks 
Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2013-12-18T21:42:06+00:00

Conflicts:
	drivers/net/ethernet/intel/i40e/i40e_main.c
	drivers/net/macvtap.c

Both minor merge hassles, simple overlapping changes.

Signed-off-by: David S. Miller

net: phy: micrel: fix checkpath errors

2013-12-18T05:49:02+00:00

checkpatch spotted a few spaces vs tabs errors, fix them.

Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller