linux-kernel - [PATCH v3 0/3] arm64: add ethernet to orange pi 3

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Date:   Mon, 23 May 2022 05:28:04 +0000
From:   Corentin Labbe <clabbe@...libre.com>
To:     andrew@...n.ch, broonie@...nel.org, calvin.johnson@....nxp.com,
        davem@...emloft.net, edumazet@...gle.com, hkallweit1@...il.com,
        jernej.skrabec@...il.com, krzysztof.kozlowski+dt@...aro.org,
        kuba@...nel.org, lgirdwood@...il.com, linux@...linux.org.uk,
        pabeni@...hat.com, robh+dt@...nel.org, samuel@...lland.org,
        wens@...e.org
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...ts.linux.dev,
        netdev@...r.kernel.org, Corentin Labbe <clabbe@...libre.com>
Subject: [PATCH v3 0/3] arm64: add ethernet to orange pi 3

Hello

2 sunxi board still does not have ethernet working, orangepi 1+ and
orangepi 3.
This is due to the fact thoses boards have a PHY which need 2 regulators.

A first attempt by Ondřej Jirman was made to support them was made by adding support in
stmmac driver:
https://lore.kernel.org/lkml/20190820145343.29108-6-megous@megous.com/
Proposal rejected, since regulators need to be handled by the PHY core.

My first tentative was to just add handling of phy and phy-io in
phy-core:
https://lore.kernel.org/netdev/20220509074857.195302-7-clabbe@baylibre.com/T/
But having hard-coded phy names was rejected.

Second tentative tryed the same path than clocks and clock-names for
regulators.
https://lore.kernel.org/netdev/0518eef1-75a6-fbfe-96d8-bb1fc4e5178a@linaro.org/t/
But using this was rejected by DT maintainers.

So v3 use a new regulator_bulk_get_all() which grab all supplies
properties in a DT node.
But this way could have some problem, a netdev driver could handle
already its PHY (like dwmac-sun8i already do) and so both phy-core and
the netdev will use both.
It is why phy-supply was renamed in ephy-supply in patch #3.

This serie was tested on whole range of board and PHY architecture:
- internal PHY
  * sun8i-h3-orangepi-pc
- external PHY
  * sun50i-h6-pine-h64
  * sun8i-r40-bananapi-m2-ultra
  * sun8i-a83t-bananapi-m3
  * sun50i-a64-bananapi-m64
  * sun50i-h6-orangepi-3
  * sun50i-h5-nanopi-neo-plus2

The resume/suspend of PHY was tested.

Regards

changes since v1:
- Add regulator_bulk_get_all for ease handling of PHY regulators
- Removed all convertion patchs to keep DT compatibility.

Changes since v2:
- removed use of regulator-names and regulators list.

Corentin Labbe (2):
  regulator: Add regulator_bulk_get_all
  phy: handle optional regulator for PHY

Ondřej Jirman (1):
  arm64: dts: allwinner: orange-pi-3: Enable ethernet

 .../dts/allwinner/sun50i-h6-orangepi-3.dts    | 38 ++++++++
 drivers/net/mdio/Kconfig                      |  1 +
 drivers/net/mdio/fwnode_mdio.c                | 36 +++++++-
 drivers/net/phy/phy_device.c                  | 10 ++
 drivers/regulator/core.c                      | 92 +++++++++++++++++++
 include/linux/phy.h                           |  3 +
 include/linux/regulator/consumer.h            |  2 +
 7 files changed, 178 insertions(+), 4 deletions(-)

-- 
2.35.1