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Commit da47b4572056 ("phy: add support for a reset-gpio specification")
causes the following xtensa qemu crash according to Guenter Roeck:
[ 9.366256] libphy: ethoc-mdio: probed
[ 9.367389] (null): could not attach to PHY
[ 9.368555] (null): failed to probe MDIO bus
[ 9.371540] Unable to handle kernel paging request at virtual address 0000001c
[ 9.371540] pc = d0320926, ra = 903209d1
[ 9.375358] Oops: sig: 11 [#1]
This reverts commit da47b4572056487fd7941c26f73b3e8815ff712a.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since e7f4dc3536a ("mdio: Move allocation of interrupts into core"),
platforms which call fixed_phy_add() before fixed_mdio_bus_init() is
called (for example, because the platform code and the fixed_phy driver
use the same initcall level) crash in fixed_phy_add() since the
->mii_bus is not allocated.
Also since e7f4dc3536a, these interrupts are initalized to polling by
default. The few (old) platforms which directly use fixed_phy_add()
from their platform code all pass PHY_POLL for the irq argument, so we
can keep these platforms not crashing by simply not attempting to set
the irq if PHY_POLL is passed.
Also, even if problems have not been reported on more modern platforms
which used fixed_phy_register() from drivers' probe functions, we return
-EPROBE_DEFER if the MDIO bus is not yet registered so that the probe is
retried later.
Fixes: e7f4dc3536a400 ("mdio: Move allocation of interrupts into core")
Signed-off-by: Rabin Vincent <rabinv@axis.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This reverts commit 7f32541c2fdaa84af418c3e1431bbd066ab44d09.
This needs reverting too, as per requests.
Signed-off-by: David S. Miller <davem@davemloft.net>
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This reverts commit 81003bc924bac0a99bfdc2869f5dff5a87aa4a3d.
Developers have asked me to revert this for now.
Signed-off-by: David S. Miller <davem@davemloft.net>
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If you compile without OF_MDIO support in an RGMII configuration, we fail
to configure the dp83867 phy today by writing garbage into its configuration
registers.
On the other hand if you do compile with OF_MDIO and the phy gets loaded via
device tree, you have to have the properties set in the device tree, otherwise
we fail to load the driver and don't even attach the generic phy driver to
the interface anymore.
To make things slightly more consistent, make the rgmii configuration properties
optional and allow a user to omit them in their device tree.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When CONFIG_OF_MDIO is configured as module, the #define for it really
is CONFIG_OF_MDIO_MODULE, not CONFIG_OF_MDIO. So if we are compiling it
as module, the dp83867 doesn't see that OF_MDIO was selected and doesn't
read the dt rgmii parameters.
The fix is simple: Use IS_ENABLED(). It checks for both - module as well
as compiled in code.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This function declares the 'err' local variable for no good reason, get rid
of it.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Both these functions declare the 'err' local variables for no good reason,
get rid of them.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The framework only asserts (for now) that the reset gpio is not active.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The nf_conntrack_core.c fix in 'net' is not relevant in 'net-next'
because we no longer have a per-netns conntrack hash.
The ip_gre.c conflict as well as the iwlwifi ones were cases of
overlapping changes.
Conflicts:
drivers/net/wireless/intel/iwlwifi/mvm/tx.c
net/ipv4/ip_gre.c
net/netfilter/nf_conntrack_core.c
Signed-off-by: David S. Miller <davem@davemloft.net>
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Replace the hardcoded mask 0x00fffff0 with MICREL_PHY_ID_MASK for
better readability.
Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If phy was suspended and is starting, current driver always enable
phy's interrupts, if phy works in polling, phy can raise unexpected
interrupt which will not be handled, the interrupt will block system
enter suspend again. So interrupts should only be re-enabled if phy
works in interrupt.
Signed-off-by: Shaohui Xie <Shaohui.Xie@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Ethtool callbacks {get|set}_link_ksettings are often the same, so
we add two generics functions phy_ethtool_{get|set}_link_ksettings
to avoid writing severals times the same function.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Acked-By: David Decotigny <decot@googlers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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I've finally noticed that mdiobus_scan() also returns either NULL or error
value on failure. Return ERR_PTR(-ENODEV) instead of NULL since this is
the error value already filtered out by the callers that want to ignore
the MDIO address scan failure...
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Conflicts:
net/ipv4/ip_gre.c
Minor conflicts between tunnel bug fixes in net and
ipv6 tunnel cleanups in net-next.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since commit b74766a0a0fe ("phylib: don't return NULL
from get_phy_device()") in linux-next, phy_get_device() will return
ERR_PTR(-ENODEV) instead of NULL if the PHY device ID is all ones.
This causes problem with stmmac driver and likely some other drivers
which call mdiobus_register(). I triggered this bug on SoCFPGA MCVEVK
board with linux-next 20160427 and 20160428. In case of the stmmac, if
there is no PHY node specified in the DT for the stmmac block, the stmmac
driver ( drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c function
stmmac_mdio_register() ) will call mdiobus_register() , which will
register the MDIO bus and probe for the PHY.
The mdiobus_register() resp. __mdiobus_register() iterates over all of
the addresses on the MDIO bus and calls mdiobus_scan() for each of them,
which invokes get_phy_device(). Before the aforementioned patch, the
mdiobus_scan() would return NULL if no PHY was found on a given address
and mdiobus_register() would continue and try the next PHY address. Now,
mdiobus_scan() returns ERR_PTR(-ENODEV), which is caught by the
'if (IS_ERR(phydev))' condition and the loop exits immediately if the
PHY address does not contain PHY.
Repair this by explicitly checking for the ERR_PTR(-ENODEV) and if this
error comes around, continue with the next PHY address.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 13a56b44 ("at803x: Add support for hardware reset") added a
work-around for a hardware bug on the AT8030. However, the work-around
was being called for all 803x PHYs, even those that don't need it.
Function at803x_link_change_notify() checks to make sure that it only
resets the PHY on the 8030, but it makes more sense to not call that
function at all if it isn't needed.
Signed-off-by: Timur Tabi <timur@codeaurora.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now that get_phy_device() no longer returns NULL on error, we don't need
to check for it...
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now that get_phy_device() no longer returns NULL on error, we don't need
to check for it...
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Arnd Bergmann asked that get_phy_device() returns either NULL or the error
value, not both on error. Do as he said, return ERR_PTR(-ENODEV) instead
of NULL when the PHY ID registers read as all ones.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Conflicts were two cases of simple overlapping changes,
nothing serious.
In the UDP case, we need to add a hlist_add_tail_rcu()
to linux/rculist.h, because we've moved UDP socket handling
away from using nulls lists.
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ks8895 driver is using spi_dev_get() apparently just to take a copy
of the SPI device used to instantiate it but never calls spi_dev_put()
to free it. Since the device is guaranteed to exist between probe() and
remove() there should be no need for the driver to take an extra
reference to it so fix the leak by just using a straight assignment.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The old ethtool api (get_setting and set_setting) has
generic phy functions phy_ethtool_sset and phy_ethtool_gset.
To supprt the new ethtool api (get_link_ksettings and
set_link_ksettings), we add generic phy function
phy_ethtool_ksettings_get and phy_ethtool_ksettings_set.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When tested the PHY SGMII Loopback:
1.set the LOOPBACK bit,
2.set the autoneg to AUTONEG_DISABLE, it calls the
genphy_setup_forced which will clear the bit.
The BMCR_LOOPBACK bit should be preserved.
As Florian pointed out that other bits should be preserved too.
So I make the BMCR_ISOLATE and BMCR_PDOWN as well.
Signed-off-by: Weidong Wang <wangweidong1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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MDIO devices can be stacked upon each other. The current code supports
two levels, which until recently has been enough for a DSA mdio bus on
top of another bus. Now we have hardware which has an MDIO mux in the
middle.
Define an MDIO MUTEX class with three levels.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add PHY entries for the Broadcom BCM7346 and BCM7362 chips, these are
40nm generation Ethernet PHY.
Fixes: 815717d1473e ("net: phy: bcm7xxx: Remove wildcard entries")
Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This removes the dependency on GPIOLIB for non faulty PHYs.
Indeed, without this patch, if GPIOLIB is not selected
devm_gpiod_get_optional() will return -ENOSYS and the driver probe
call will fail, regardless of the actual PHY hardware.
Out of the 3 PHYs supported by this driver (AT8030, AT8031, AT8035),
only AT8030 presents the issues that commit 13a56b449325 ("net: phy:
at803x: Add support for hardware reset") attempts to work-around by
using a 'reset' GPIO line.
Hence, only AT8030 should depend on GPIOLIB operating properly.
Fixes: 13a56b449325 ("net: phy: at803x: Add support for hardware reset")
Signed-off-by: Sebastian Frias <sf84@laposte.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The driver of course "knows" that the chip's reset signal is active low,
so it drives the GPIO to 0 to reset the PHY and to 1 otherwise; however
all this will only work iff the GPIO is specified as active-high in the
device tree! I think both the driver and the device trees (if there are
any -- I was unable to find them) need to be fixed in this case...
Fixes: 13a56b449325 ("net: phy: at803x: Add support for hardware reset")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We could end up dereferencing an error pointer when we call
regulator_disable().
Fixes: 4bdcb1dd9feb ('net: Add MDIO bus driver for the Allwinner EMAC')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Drop two extra occurrences of "on" in option title and help text.
Fixes: 379d7ac7ca31 ("phy: mdio-thunder: Add driver for Cavium Thunder SoC MDIO buses.")
Cc: David Daney <david.daney@cavium.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Acked-by: David Daney <david.daney@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When the code was factored out of mdio-octeon.c, the
MODULE_DESCRIPTION, MODULE_AUTHOR and MODULE_LICENSE annotations were
inadvertently omitted. Restore them so that we don't get kernel taint
warnings upon module loading.
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The fixed phys delete function simply removed the fixed phy from the
internal linked list and freed the memory. It however did not
unregister the associated phy device. This meant it was still possible
to find the phy device on the mdio bus.
Make fixed_phy_del() an internal function and add a
fixed_phy_unregister() to unregisters the phy device and then uses
fixed_phy_del() to free resources.
Modify DSA to use this new API function, so we don't leak phys.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The Cavium Thunder SoCs have multiple MIDO buses that are part of a
single PCI device. To model this in the device tree we call the PCI
parent device a "cavium,thunder-8890-mdio-nexus", it has several
children, one for each MDIO bus.
The MDIO bus hardware is identical to that found in the OCTEON SoCs,
so we use that code for things that are not part of the PCI driver
probe/remove
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A follow-on patch uses PCI probing to find the Thunder MDIO hardware.
In preparation for this, split out the common code into a new file
mdio-cavium.c, which will be used by both the existing OCTEON driver,
and the new Thunder PCI based driver.
As part of the refactoring simplify the struct cavium_mdiobus by
removing fields that are only ever used in the probe function and can
just as well be local variables.
Use readq/writeq in preference to readq_relaxed/writeq_relaxed as the
relaxed form was an optimization for an early chip revision, and the
MDIO drivers are not performance bottlenecks that need optimization in
the first place.
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When operating the at803x in SGMII mode, resuming the chip
from power down brings up the copper-side link but leaves
the SGMII link in unconnected state (tested with at8031
attached to gianfar). In effect, this caused a permanent
link loss once the related interface was put down.
This patch ensures that power down handling in supspend()
and resume() is also applied to the SGMII link.
Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Several cases of overlapping changes, as well as one instance
(vxlan) of a bug fix in 'net' overlapping with code movement
in 'net-next'.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Disable auto negotiation on init to properly detect an already plugged
cable at boot.
At boot, when the phy is started, it is in the PHY_UP state.
However, if a cable is plugged at boot, because auto negociation is already
enabled at the time we get the first interrupt, the phy is already running.
But the state machine then switches from PHY_UP to PHY_AN and calls
phy_start_aneg(). phy_start_aneg() will not do anything because aneg is
already enabled on the phy. It will then wait for a interrupt before going
further. This interrupt will never happen unless the cable is unplugged and
then replugged.
It was working properly before 321beec5047a (net: phy: Use interrupts when
available in NOLINK state) because switching to NOLINK meant starting
polling the phy, even if IRQ were enabled.
Fixes: 321beec5047a (net: phy: Use interrupts when available in NOLINK state)
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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At least on ksz8081, when getting back from power down, interrupts are
disabled. ensure they are reenabled if they were previously enabled.
This fixes resuming which is failing on the xplained boards from atmel
since 321beec5047a (net: phy: Use interrupts when available in NOLINK
state)
Fixes: 321beec5047a (net: phy: Use interrupts when available in NOLINK state)
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A bug was introduced in the merge commit b633353115e3 ("Merge
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net")
The generic marvell_config_init (and therefore marvell_of_reg_init) is
not called anymore for the Marvell 88E1510 (in net-next).
This patch calls marvell_config_init and moves the specific init
function for the 88E1510 below the marvell_config_init function to avoid
adding a function predeclaration.
Signed-off-by: Clemens Gruber <clemens.gruber@pqgruber.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Conflicts:
drivers/net/phy/bcm7xxx.c
drivers/net/phy/marvell.c
drivers/net/vxlan.c
All three conflicts were cases of simple overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
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commit 2b2427d06426 ("phy: micrel: Add ethtool statistics counters")
from Dec 30, 2015, leads to the following static checker
warning:
drivers/net/phy/micrel.c:609 kszphy_get_stat()
warn: unsigned 'val' is never less than zero.
drivers/net/phy/micrel.c
602 static u64 kszphy_get_stat(struct phy_device *phydev, int i)
603 {
604 struct kszphy_hw_stat stat = kszphy_hw_stats[i];
605 struct kszphy_priv *priv = phydev->priv;
606 u64 val;
607
608 val = phy_read(phydev, stat.reg);
609 if (val < 0) {
^^^^^^^
Unpossible!
610 val = UINT64_MAX;
611 } else {
612 val = val & ((1 << stat.bits) - 1);
613 priv->stats[i] += val;
614 val = priv->stats[i];
615 }
616
617 return val;
618 }
The same problem exists in the Marvell driver. Fix both.
Fixes: 2b2427d06426 ("phy: micrel: Add ethtool statistics counters")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: Julia.Lawall <julia.lawall@lip6.fr>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Files in sysfs are created using the name from the phy_driver struct,
when two names are the same we may get a duplicate filename warning,
fix this.
Reported-by: kernel test robot <ying.huang@linux.intel.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add code to select SGMII-to-copper mode upon SGMII interface selection.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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For the Marvell 88E1510, marvell_of_reg_init was called too late, in the
config_aneg function.
Since commit 113c74d83eef ("net: phy: turn carrier off on phy attach"),
this lead to the link not coming up at boot anymore, due to the phy
state machine being stuck at waiting for interrupts (off by default on
the 88E1510).
For seven other Marvell PHYs, marvell_of_reg_init was not called at all.
Add a generic marvell_config_init function, which in turn calls
marvell_of_reg_init.
PHYs, which already have a specific config_init function with a call to
marvell_of_reg_init, are left untouched. The generic marvell_config_init
function is called for all the others, to get consistent behavior across
all Marvell PHYs.
Fixes: 113c74d83eef ("net: phy: turn carrier off on phy attach")
Signed-off-by: Clemens Gruber <clemens.gruber@pqgruber.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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genphy_config_init() masked out pause flags set in phy driver structure.
Pause flags needs to be preserved in phydev->supported &
phydev->advertising.
Signed-off-by: Woojung Huh <woojung.huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ks8995 phy driver just started using gpiod_* functions, which are
declared in linux/gpio/consumer.h, not linux/gpio.h, resulting in a
build failure in randconfig builds that do not have CONFIG_GPIOLIB
enabled:
drivers/net/phy/spi_ks8995.c: In function 'ks8995_probe':
drivers/net/phy/spi_ks8995.c:477:3: error: implicit declaration of function 'gpiod_set_value' [-Werror=implicit-function-declaration]
This changes the header inclusion so it builds in all configurations.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: cd6f288cbaab ("net: phy: spi_ks8995: add support for resetting switch using GPIO")
Signed-off-by: David S. Miller <davem@davemloft.net>
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Introduce a macro which helps adding new 40NM EPHY entries and reduces the
amount of boilerplate code.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The driver is BCM7xxx, we were missing an additional X in the constant naming,
fix that to be consistent.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove the two wildcard entries, they serve no purpose and will match way too
many devices, some of them being covered by the driver in
drivers/net/phy/broadcom.c. Remove the now unused bcm7xxx_dummy_config_init()
function which would produce a warning.
Fixes: b560a58c45c6 ("net: phy: add Broadcom BCM7xxx internal PHY driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since we were wrongly advertising gigabit features for these 10/100 only
Ethernet PHYs, bcm7xxx_config_init() which is supposed to apply workaround
would have not run since the check would be true, now that we have fixed the
PHY features, remove that check since it has no reasoning to be there anymore.
Fixes: e18556ee3bd83 ("net: phy: bcm7xxx: do not use PHY_BRCM_100MBPS_WAR")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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