Merge branch 'net-mdio-realtek-rtl9300-add-rtl83xx-support'

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Markus Stockhausen says:

====================
net: mdio: realtek-rtl9300: Add RTL83xx support

The Realtek Otto switch platform consists of four different series

- RTL838x aka maple   : 28 port 1G Switches
- RTL839x aka cypress : 52 port 1G Switches
- RTL930x aka longan  : 28 port 1G/2.5G/10G Switches
- RTL931x aka mango   : 56 port 1G/2.5G/10G Switches

While the MDIO hardware polling unit and its necessity for the MAC
layer was always well known, no detailed documentation was available.
For this series the MDIO bus was inspected with a logic analyzer for
a better understanding how polling and kernel access interact on the
bus. All this will be explained now in the driver comments.

This patch series adds support for the RTL83xx devices. For this

- Enhance device tree binding.
- Add special handling for limitations enforced by hardware polling.
  These already have minor side effects on RTL93xx devices but are even
  more critical for the RTL83xx hardware.
- Add RTL83xx coding.
====================

Link: https://patch.msgid.link/20260831143439.2404484-1-markus.stockhausen@gmx.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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This commit is contained in:

Jakub Kicinski 2026-09-02 18:57:08 -07:00

parent 1d91ec5b15 d4ce2cef18

commit 277c1de206

5 changed files with 547 additions and 103 deletions

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14

Documentation/devicetree/bindings/net/realtek,rtl9301-mdio.yaml

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4

drivers/net/mdio/Kconfig

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426

drivers/net/mdio/mdio-realtek-rtl9300.c

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188

drivers/net/phy/phy_device.c

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18

include/linux/phy.h

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