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realtek: rtl839x: Enable AUX MDIO controller

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Enable the driver for the Realtek Otto auxiliary MDIO driver so RTL839x
devices can use it. The related node is added to the base devicetree for
rtl839x-based devices, so they can enabled and use it when required.

Signed-off-by: Sander Vanheule <sander@svanheule.net>
(cherry picked from commit cddcc69ddf9c6284d6c9a6399c4ea48d7a044719)
This commit is contained in:
Sander Vanheule 2025-01-18 13:45:55 +01:00
parent 87d3e886d5
commit d7631cf577
2 changed files with 22 additions and 1 deletions
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21
target/linux/realtek/dts/rtl839x.dtsi
View File

@ -258,6 +258,22 @@
};
switchcore@1b000000 {
compatible = "syscon", "simple-mfd";
reg = <0x1b000000 0x20000>;
mdio_aux: mdio-aux {
compatible = "realtek,rtl8390-aux-mdio";
#address-cells = <1>;
#size-cells = <0>;
status = "disabled";
pinctrl-names = "default";
pinctrl-0 = <&mdio_aux_mdx>;
};
};
pinmux@1b000004 {
compatible = "pinctrl-single";
reg = <0x1b000004 0x4>;
@ -290,6 +306,11 @@
pinmux_disable_sys_led: disable_sys_led {
pinctrl-single,bits = <0x0 0x0 0x4000>;
};
/* enable AUX MDC/MDIO */
mdio_aux_mdx: aux-mdx-pins {
pinctrl-single,bits = <0x0 0x100000 0x1c0000>;
};
};
ethernet0: ethernet@1b00a300 {

2
target/linux/realtek/rtl839x/config-6.6
View File

@ -121,7 +121,7 @@ CONFIG_MDIO_BUS=y
CONFIG_MDIO_DEVICE=y
CONFIG_MDIO_DEVRES=y
CONFIG_MDIO_I2C=y
# CONFIG_MDIO_REALTEK_OTTO_AUX is not set
CONFIG_MDIO_REALTEK_OTTO_AUX=y
CONFIG_MDIO_SMBUS=y
CONFIG_MEMFD_CREATE=y
# CONFIG_MFD_RTL8231 is not set