net: cpsw: support "phy-handle" and deprecate "phy_id" ...

Upstream dts files changed to the generic binding for mii phys, so we
have to support it in barebox aswell. The barebox internal device trees
haven't been changed, so support them until all have changed. We print
a warning to add some motivation to change.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/net-switch-mv88e6xxx'

Merge branch 'for-next/net'

net: macb: Add compatible for atmel,sama5d3-gem ...

The macb driver works with the gigabit MAC found on Atmel sama5d3 SoCs.
Add a compatible for it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: macb: add remove callback ...

The macb driver does DMA and thus should be quiesced on shutdown. Add
the remove callback.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: macb: simplify private data allocation ...

Instead of allocating struct macb_device and a struct eth_device
separately just use the eth_device structure that is already embedded
in struct macb_device but currently unused.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: macb: remove unused variable ...

tx_tail is unused. Remove it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: macb: no need for coherent memory for receive buffer ...

The receive buffers are properly synchronized with dma_sync_*, no need
to use coherent memory for them.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: designware: look for a child device node for MDIO bus ...

The Designware driver registers a local MDIO bus for each MAC device,
but without setting a device node pointer for the MDIO bus device.  In
this case, mdiobus_register() will use the MDIO bus's parent device node
(if any) as the MDIO device node.

If the MAC device node has a child node compatible with
"snps,dwmac-mdio", let us use that as the MDIO bus device node.
Otherwise, leave the MDIO bus device node pointer set to NULL and carry
on as before.

The upshot is that PHY device nodes can now be placed in an intermediate
node for the MDIO bus instead of having to place them directly in the
Designware MAC device node.

(Tested on a Terasic DE0-Nano-SoC with a suitably modified device tree.)

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: mv88e6xxx: Add support for MAC ports ...

Add support for MAC-only/no-PHY ports by adding code that will create
a pseudo PHY device for such ports and a driver to match
against. Original Linux driver exposes all of the ports using DSA
subystem, but lacking that in Barebox, creating pseudo PHYs is the
simplest option to have code to properly configure various interface
parameters.

This is needed, for example, on ZII RPU2 board where FEC is connected
directly to one of the MAC-only ports. That link requires proper RGMII
delay configuration in order to be functional.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: mv88e6xxx: Port EEPROM support code ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: Add basic driver for MV88E6XXX switches from Marvell ...

Port a very abridged version of MV88E6XXX DSA driver from Linux
kernel. Currently only internal MDIO bus connected to switch PHYs is
exposed.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mdio_bus: Allow for non PHY-devices on MDIO buses ...

Instead of just creating a simple PHY device for every child of MDIO
bus node, add code to check if any of them have "compatible" property
set, as well as code to create a proper platform device for such
cases.

This change is useful for when MDIO bus and some of Ethernet ports are
connected to a switch or some other MDIO device that doesn't behave
like a generic PHY and can't be probed via its PHY ID.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: Check phy_mask in get_phy_device() ...

Do not try to probe PHY devices if they are masked in phy_mask. This
way we won't try adding devices that are unlikely to be proper PHYs by
default. With this change it still remains possible to add such a
device explicitly either using "miitool" or calling
phy_device_create() explicilty.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mdio_bus: Fix documentation for mdio_bus_match() ...

Fix documentation for mdio_bus_match(). While at it, re-arrange the
code to be easier to follow. Seeing != used as a result of a matching
function is extremely confusing.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

drivers: Introduce dev_set_name() ...

Introduce dev_set_name() in order to hide implementation details of
setting device's name so it'd be easier to change it.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

phy: call adjust_link in attach if using fixed-link ...

Normally, phy_update_status is in charge of reporting a change in link
status when phy is updated. When using fixed-link, speed and duplex are
initialized directly after registering the phy and there is no driver.
Hence when phy_update_status is called, the check for new values fails
and returns directly. Since update_link call is mandatory for some
network devices to work, call it directly when using fixed link in
phy_device_attach to force update of link.

Signed-off-by: Clement Leger <clement.leger@kalray.eu>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: fec_imx: Do not use DMA coherent memory for Rx buffers ...

Trying to do unaligned access of coherent memory on AArch64 will lead
to an abort and some parts of our IP stack will do exactly that with
received packet buffer by using memcpy() to extracts parts of it.

Convert the driver to use regular memory for received data buffers to
prevent the issue from happening.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: fec_imx: Make use of readx_poll_timeout() macros ...

Condense a bit of code by using vairous readx_poll_timeout() macros.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: fec_imx: Drop frame_length ...

Drop frame_length in favour of just using len

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: fec_imx: Drop struct fec_frame ...

Drop struct fec_frame since it doesn't have any real users in the
code. It is only referenced in fec_recv() and is used by that function
as a generic pointer.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: fec_imx: Read data_length only once ...

Data length of a given Rx data descriptor isn't going to change until
that descriptor is processed and given back to HW. Re-work the code to
save and re-use that value instead.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: fec_imx: Don't check bd_status & FEC_RBD_ERR twice ...

Re-shuffle comparisons in order to avoid having to check for
FEC_RBD_ERR in bd_status more than once.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: fec_imx: Drop extra indentation level by exiting early ...

Drop extra indentation level by exiting early which also allows us to
check for bd_status & FEC_RBD_EMPTY instead of !(bd_status &
FEC_RBD_EMPTY).

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: mdio: Do not warn about invalid PHY address ...

of_mdiobus_register is now called with nodes from ethernet devices.
Their child nodes are not necessarily phy nodes. For am335x devices
we get several warnings now:

miibus0: /ocp/ethernet@4a100000/mdio@4a101000 PHY address 1242566656 is too large
miibus0: /ocp/ethernet@4a100000/slave@4a100200 has invalid PHY address
miibus0: /ocp/ethernet@4a100000/slave@4a100300 has invalid PHY address
miibus0: /ocp/ethernet@4a100000/cpsw-phy-sel@44e10650 PHY address 1155597904 is too large

None of the nodes is a phy node, so silence the warnings and turn them
into dev_dbg.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/net'

Merge branch 'for-next/dma-mask'

net: fec_imx: Return EFAULT when DMA mapping fails ...

EFAULT seems to be much more appropriate error code for DMA mapping
failure, it also produces more informative message, compare:

ping 192.168.53.7
WARNING: eth0: No MAC address set. Using random address 92:4e:f1:18:96:67
eth0: 100Mbps full duplex link detected
ping failed: Bad address

versus old message:

ping 192.168.53.7
WARNING: eth0: No MAC address set. Using random address c6:b7:67:bb:4a:c3
eth0: 100Mbps full duplex link detected
ping failed: I/O error

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: fec_imx: Specify that DMA is 32-bit only ...

FEC can only do a DMA transfer to 32-bit address space, so mark it as
such.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

drivers: net: designware: select reset controller ...

The socfpga-specific designware driver uses reset_control_get().
Select the socfpga-reset driver to actually use this function instead of
a stub.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>