diff options
| author | Sander Vanheule | 2024-12-27 14:56:44 +0000 |
|---|---|---|
| committer | Sander Vanheule | 2025-01-07 13:36:34 +0000 |
| commit | 92ae8cb16c46823d5a00489b4d3a9cc724ba67a4 (patch) | |
| tree | 3d92bb1face2269c436ad141f2152ca82e3a0d75 | |
| parent | ae833c01b312258c27ff2dc1c8d44b15b7028e32 (diff) | |
| download | openwrt-92ae8cb16c46823d5a00489b4d3a9cc724ba67a4.tar.gz | |
realtek: rtl838x: Instantiate auxiliary MDIO bus
Add a disabled node for the auxiliary MDIO bus, used to manage the
RTL8231 expanders. A simple-mfd parent node is added, at the same
(implied) address as the switch@1b000000 node, as the switch drivers
should anyway transistion to MFD subdivices at some point.
Additionally, two pinctrl-single node are added to allow the MDX pins to
be muxed correctly, in case the bootloader leaves these unconfigured.
Signed-off-by: Sander Vanheule <sander@svanheule.net>
| -rw-r--r-- | target/linux/realtek/dts/rtl838x.dtsi | 56 | ||||
| -rw-r--r-- | target/linux/realtek/rtl838x/config-6.6 | 2 |
2 files changed, 57 insertions, 1 deletions
diff --git a/target/linux/realtek/dts/rtl838x.dtsi b/target/linux/realtek/dts/rtl838x.dtsi index 13ba6450b2..ab034fc1bc 100644 --- a/target/linux/realtek/dts/rtl838x.dtsi +++ b/target/linux/realtek/dts/rtl838x.dtsi @@ -232,6 +232,42 @@ }; }; + switchcore@1b000000 { + compatible = "syscon", "simple-mfd"; + reg = <0x1b000000 0x20000>; + + mdio_aux: mdio-aux { + compatible = "realtek,rtl8380-aux-mdio"; + #address-cells = <1>; + #size-cells = <0>; + + status = "disabled"; + + pinctrl-names = "default"; + pinctrl-0 = <&mdio_aux_mdx>, <&aux_mode_mdio>; + }; + }; + + pinmux@1b000144 { + compatible = "pinctrl-single"; + reg = <0x1b000144 0x4>; + + pinctrl-single,bit-per-mux; + pinctrl-single,register-width = <32>; + pinctrl-single,function-mask = <0x1>; + #pinctrl-cells = <2>; + + /* I2C mode */ + aux_mode_i2c: i2c-pins { + pinctrl-single,bits = <0x0 0x0 0x1>; + }; + + /* MDIO mode */ + aux_mode_mdio: mdx-pins { + pinctrl-single,bits = <0x0 0x1 0x1>; + }; + }; + pinmux: pinmux@1b001000 { compatible = "pinctrl-single"; reg = <0x1b001000 0x4>; @@ -262,6 +298,26 @@ }; }; + pinmux@1b00a0e0 { + compatible = "pinctrl-single"; + reg = <0x1b00a0e0 0x4>; + + pinctrl-single,bit-per-mux; + pinctrl-single,register-width = <32>; + pinctrl-single,function-mask = <0x1>; + #pinctrl-cells = <2>; + + /* Use SoC GPIO 2/3 as GPIO */ + mdio_aux_gpio: gpio-pins { + pinctrl-single,bits = <0x0 0x0 0x1>; + }; + + /* Use SoC GPIO 2/3 as MDC/MDIO */ + mdio_aux_mdx: mdx-pins { + pinctrl-single,bits = <0x0 0x1 0x1>; + }; + }; + ethernet0: ethernet@1b00a300 { compatible = "realtek,rtl838x-eth"; reg = <0x1b00a300 0x100>; diff --git a/target/linux/realtek/rtl838x/config-6.6 b/target/linux/realtek/rtl838x/config-6.6 index 6cceded5af..9364888e47 100644 --- a/target/linux/realtek/rtl838x/config-6.6 +++ b/target/linux/realtek/rtl838x/config-6.6 @@ -130,7 +130,7 @@ 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_MFD_SYSCON=y CONFIG_MIGRATION=y |