u-boot.git/drivers/net/phy, branch v2021.04

net: phy: introduce fixed_phy_create for DSA CPU ports

2021-02-16T16:48:20+00:00

The DSA (Distributed Switch Architecture) implementation has made a
design decision when it got introduced to the Linux kernel in 2008.
That was to hide away from the user the CPU-facing Ethernet MAC, since
it does not make sense to register it as a struct net_device (UCLASS_ETH
udevice for U-Boot), because that would never be beneficial for a user:
they would not be able to use it for traffic, since conceptually, a
packet delivered to the CPU port should loop back into the system.

Nonetheless, DSA has had numerous growing pains due to the lack of a
struct net_device for the CPU port, but so far it has overcome them.
It is unlikely at this stage of maturity that this aspect of it will
change.

We would like U-Boot to present the same information as Linux, to be at
parity in terms of number of interfaces, so that ethNaddr environment
variables could directly be associated between U-Boot and Linux.
Therefore, we would implicitly like U-Boot to hide the CPU port from the
user as well.

But the paradox is that DSA still needs a struct phy_device to inform
the driver of the parameters of the link that it should configure the
CPU port to. The problem is that the phy_device is typically returned
via a call to phy_connect, which needs an udevice to attach the PHY to,
and to search its ofnode for the 'fixed-link' property. But we don't
have an udevice to present for the CPU port.

Since 99% of DSA setups are MAC-to-MAC connections between the switch
and the host Ethernet controller, the struct phy_device is going to be a
fixed PHY. This simplifies things quite a bit. In U-Boot, a fixed PHY
does not need an MDIO bus, and does not need an attached dev either.
Basically, the phy_connect call doesn't do any connection, it just
creates the fixed PHY.

The proposal of this patch is to introduce a new fixed_phy_create
function which will take a single argument: the ofnode that holds this:

	port@4 {
		reg = <4>;
		phy-mode = "internal";

		fixed-link {
			speed = <2500>;
			full-duplex;
		};
	};

and probe a fixed PHY driver using the information from this ofnode.
DSA will probably be the only user of this function.

Signed-off-by: Vladimir Oltean 
Reviewed-by: Claudiu Manoil

net: phy: fixed: support speeds of 2500 and 10000

2021-02-16T16:48:20+00:00

Unlike the Linux fixed PHY driver, the one in U-Boot does not attempt to
emulate the clause 22 register set of a gigabit copper PHY driver
through the swphy framework. Therefore, the limitation of being unable
to support speeds higher than gigabit in fixed-link does not apply to
the U-Boot fixed PHY driver. This makes the fixed-link U-Boot
implementation more similar to the one from phylink, which can work with
any valid link speed.

Signed-off-by: Vladimir Oltean 
Reviewed-by: Claudiu Manoil

common: Drop asm/global_data.h from common header

2021-02-02T20:33:42+00:00

Move this out of the common header and include it only where needed.  In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly.   Finally, we have a few
cases where we did not need to include  at all, so
remove that include.

Signed-off-by: Simon Glass 
Signed-off-by: Tom Rini

net: phy: micrel: Try default PHY ofnode first

2021-01-27T15:47:54+00:00

The phydev structure has a PHY OF node pointer in it, use that OF node
first when looking up PHY OF node properties, since that is likely the
correct PHY OF node pointer. If the pointer is not valid, which is the
case e.g. on legacy DTs, fall back to parsing MAC ethernet-phy subnode.

Signed-off-by: Marek Vasut 
Cc: Joe Hershberger 
Cc: Ramon Fried

net: phy: ca_phy: Add driver for CAxxxx SoCs

2021-01-27T15:47:47+00:00

Add phy driver support for MACs embedded inside Cortina Access SoCs

Signed-off-by: Abbie Chang 
Signed-off-by: Alex Nemirovsky 

CC: Joe Hershberger 
CC: Tom Rini 
CC: Aaron Tseng 

Moved out PHY specific code out of Cortina NI Ethernet driver
and into a Cortina Access PHY interface driver

net: phy: micrel: fix typo

2021-01-19T08:11:14+00:00

Fix typo.

Signed-off-by: Claudiu Beznea

net: phy: micrel: add support for DLL setup on ksz9131

2021-01-19T08:11:14+00:00

Add support for DLL setup on KSZ9131.

Signed-off-by: Claudiu Beznea

common: board_r: Drop initr_bbmii wrapper

2021-01-15T19:36:12+00:00

Add a return value to bb_miiphy_init and use it directly in the
post-relocation init sequence, rather than using a wrapper stub.

Signed-off-by: Ovidiu Panait 
Reviewed-by: Simon Glass

drivers/net/phy: Add CORTINA_NO_FW_UPLOAD to Kconfig

2020-12-10T08:26:39+00:00

Move CORTINA_NO_FW_UPLOAD to Kconfig file so that it can
be controlled via defconfig files.

Signed-off-by: Meenakshi Aggarwal 
Reviewed-by: Priyanka Jain

Merge branch 'next'

2020-10-05T18:10:59+00:00

Bring in the assorted changes that have been staged in the 'next' branch
prior to release.

Signed-off-by: Tom Rini