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The cp110 comphy has ability to invert RX and/or TX polarity. Polarity
depends on board design. Currently all supported boards doesn't require
SATA phy polarity invert, therefore COMPHY_POLARITY_NO_INVERT is set for
all boards.

Change-Id: Ifd0bc6aaf8a76a0928132b197422f3193cf020d5
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>

According to erratum IPCE_COMPHY-1353 the TX_IDLE bit should
be toggled in addition to the XFI/SFI PHY reset.

Change-Id: Idd2c2abfcb2f960caa01e6d69db524c2e4734f50
Signed-off-by: Marcin Wojtas <mw@semihalf.com>

1) Relay only on rx training, remove parts responsible for tx training
(trx training).
2) Add extra steps e.g. preconfigure FFE before starting training.
3) Remove some unnecessary steps like RRBS31 loopback setting which
shouldn't be relevant for tx_training.

Change-Id: Ib1e8567714f9ce33578186a262c339aa4b1c51f2
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>

All identifiers, regardless of use, that start with two underscores are
reserved. This means they can't be used in header guards.

The style that this project is now to use the full name of the file in
capital letters followed by 'H'. For example, for a file called
"uart_example.h", the header guard is UART_EXAMPLE_H.

The exceptions are files that are imported from other projects:

- CryptoCell driver
- dt-bindings folders
- zlib headers

Change-Id: I50561bf6c88b491ec440d0c8385c74650f3c106e
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Some of COMPHY parameters depends on the hw connection between the SoC
and the PHY, which can vary on different boards e.g. due to different
wires length. Define the "porting layer" with some defaults
parameters. It ease updating static values which needs to be updated due
to board differences, which are now grouped in one place.

Example porting layer for a8k-db is under:
plat/marvell/a8k/a80x0/board/phy-porting-layer.h

If for some boards parameters are not defined (missing
phy-porting-layer.h), the default values are used
(drivers/marvell/comphy/phy-default-porting-layer.h)
and the following compilation warning is show:
"Using default comphy params - you may need to suit them to your board".

The common COMPHY driver code is extracted in order to be shared with
future COMPHY driver for A3700 SoC platforms
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Signed-off-by: Igal Liberman <igall@marvell.com>
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>

Use PF instead of PP post-fix, since it is referring to "Phase Final"
(only G3 related register had correct spelling for relevant bit).

Change-Id: Ia5a9c9c78b74b15f7f8adde2c3ef4784c513da2c
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Reviewed-by: Igal Liberman <igall@marvell.com>
Reviewed-by: Kostya Porotchkin <kostap@marvell.com>

Add COMPHY driver for usage in a runtime service.

Change-Id: I6fb42d0a099496d5699ee24684ae2b93ed35770b
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>