linux-kernel - Re: [net-next: PATCH 0/8] Armada 7k/8k PP2 ACPI support

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Message-ID: <7060d587-48c1-6553-a3b8-e340e745234f@intel.com>
Date:   Mon, 18 Dec 2017 15:09:59 +0100
From:   "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
To:     Marcin Wojtas <mw@...ihalf.com>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, netdev@...r.kernel.org
Cc:     davem@...emloft.net, linux@....linux.org.uk, andrew@...n.ch,
        f.fainelli@...il.com, antoine.tenart@...e-electrons.com,
        thomas.petazzoni@...e-electrons.com,
        gregory.clement@...e-electrons.com,
        ezequiel.garcia@...e-electrons.com, nadavh@...vell.com,
        neta@...vell.com, ard.biesheuvel@...aro.org, jaz@...ihalf.com,
        tn@...ihalf.com
Subject: Re: [net-next: PATCH 0/8] Armada 7k/8k PP2 ACPI support

On 12/18/2017 10:17 AM, Marcin Wojtas wrote:
> Hi,
>
> This patchset introduces ACPI support in mvpp2 and mvmdio drivers.
> First three patches introduce fwnode helpers for obtaining PHY
> information from nodes and also MDIO fwnode API for registering
> the bus with its PHY/devices.
>
> Following patches update code of the mvmdio and mvpp2 drivers
> to support ACPI tables handling. The latter is done in 4 steps,
> as can be seen in the commits. For the details, please
> refer to the commit messages.
>
> Drivers operation was tested on top of the net-next branch
> with both DT and ACPI. Although for compatibility reasons
> with older platforms, the mvmdio driver keeps using
> of_ MDIO registering, new fwnode_ one proved to fully work
> with DT as well (tested on MacchiatoBin board).
>
> mvpp2/mvmdio driver can work with the ACPI representation, as exposed
> on a public branch:
> https://github.com/MarvellEmbeddedProcessors/edk2-open-platform/commits/marvell-armada-wip
> It was compiled together with the most recent Tianocore EDK2 revision.
> Please refer to the firmware build instruction on MacchiatoBin board:
> http://wiki.macchiatobin.net/tiki-index.php?page=Build+from+source+-+UEFI+EDK+II
>
> Above support configures 1G to use its PHY normally. 10G can work now
> only with the link interrupt mode. Somehow reading of the
> string property in fwnode_mdiobus_child_is_phy works only with
> DT and cannot cope with 10G PHY nodes as in:
> https://pastebin.com/3JnYpU0A
>
> Above root cause will be further checked. In the meantime I will
> appreciate any comments or remarks for the kernel patches.
>
> Best regards,
> Marcin
>
> Marcin Wojtas (8):
>    device property: Introduce fwnode_get_mac_address()
>    device property: Introduce fwnode_get_phy_mode()
>    mdio_bus: Introduce fwnode MDIO helpers
>    net: mvmdio: add ACPI support
>    net: mvpp2: simplify maintaining enabled ports' list
>    net: mvpp2: use device_*/fwnode_* APIs instead of of_*
>    net: mvpp2: handle PHY with its fwnode
>    net: mvpp2: enable ACPI support in the driver
>
>   drivers/base/property.c               |  52 +++--
>   drivers/net/ethernet/marvell/mvmdio.c |  42 +++-
>   drivers/net/ethernet/marvell/mvpp2.c  | 246 ++++++++++++--------
>   drivers/net/phy/mdio_bus.c            | 218 +++++++++++++++++
>   include/linux/mdio.h                  |   3 +
>   include/linux/property.h              |   3 +
>   6 files changed, 454 insertions(+), 110 deletions(-)
>
Please CC linux-acpi on all submissions of patches touching ACPI, 
property.c or property.h.

Thanks!