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net: phy: Add support for Aeonsemi AS21xxx PHYs

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Add support for Aeonsemi AS21xxx 10G C45 PHYs. These PHYs integrate
an IPC to setup some configuration and require special handling to
sync with the parity bit. The parity bit is a way the IPC use to
follow correct order of command sent.

Supported PHYs AS21011JB1, AS21011PB1, AS21010JB1, AS21010PB1,
AS21511JB1, AS21511PB1, AS21510JB1, AS21510PB1, AS21210JB1,
AS21210PB1 that all register with the PHY ID 0x7500 0x7510
before the firmware is loaded.

They all support up to 5 LEDs with various HW mode supported.

While implementing it was found some strange coincidence with using the
same logic for implementing C22 in MMD regs in Broadcom PHYs.

For reference here the AS21xxx PHY name logic:

AS21x1xxB1
    ^ ^^
    | |J: Supports SyncE/PTP
    | |P: No SyncE/PTP support
    | 1: Supports 2nd Serdes
    | 2: Not 2nd Serdes support
    0: 10G, 5G, 2.5G
    5: 5G, 2.5G
    2: 2.5G

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Link: https://patch.msgid.link/20250517201353.5137-6-ansuelsmth@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Christian Marangi 2025-05-17 22:13:49 +02:00 committed by Jakub Kicinski
parent d6c45707ac
commit 830877d89e
4 changed files with 1106 additions and 0 deletions
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6
MAINTAINERS
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@ -646,6 +646,12 @@ F: drivers/iio/accel/adxl380.h
F: drivers/iio/accel/adxl380_i2c.c
F: drivers/iio/accel/adxl380_spi.c
AEONSEMI PHY DRIVER
M: Christian Marangi <ansuelsmth@gmail.com>
L: netdev@vger.kernel.org
S: Maintained
F: drivers/net/phy/as21xxx.c
AF8133J THREE-AXIS MAGNETOMETER DRIVER
M: Ondřej Jirman <megi@xff.cz>
S: Maintained

12
drivers/net/phy/Kconfig
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@ -76,6 +76,18 @@ config SFP
comment "MII PHY device drivers"
config AS21XXX_PHY
tristate "Aeonsemi AS21xxx PHYs"
help
Currently supports the Aeonsemi AS21xxx PHY.
These are C45 PHYs 10G that require all a generic firmware.
Supported PHYs AS21011JB1, AS21011PB1, AS21010JB1, AS21010PB1,
AS21511JB1, AS21511PB1, AS21510JB1, AS21510PB1, AS21210JB1,
AS21210PB1 that all register with the PHY ID 0x7500 0x7500
before the firmware is loaded.
config AIR_EN8811H_PHY
tristate "Airoha EN8811H 2.5 Gigabit PHY"
help

1
drivers/net/phy/Makefile
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@ -32,6 +32,7 @@ obj-$(CONFIG_AIR_EN8811H_PHY) += air_en8811h.o
obj-$(CONFIG_AMD_PHY) += amd.o
obj-$(CONFIG_AMCC_QT2025_PHY) += qt2025.o
obj-$(CONFIG_AQUANTIA_PHY) += aquantia/
obj-$(CONFIG_AS21XXX_PHY) += as21xxx.o
ifdef CONFIG_AX88796B_RUST_PHY
obj-$(CONFIG_AX88796B_PHY) += ax88796b_rust.o
else

1087
drivers/net/phy/as21xxx.c Normal file
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