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arm64: dts: amlogic: gxl: use gxl mdio multiplexer

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So the far, GXL SoCs were using the generic mmio register based mdio
multiplexer. This properly sets one of the glue register but the SoC
actually has 3 of those registers.

One of them sets the ID under which the internal phy will advertise
itself. If nothing sets this register before linux boots (like u-boot), the
internal phy path is broken.

To address this problem, a dedicated MDIO mux driver has been
introduced. Switch to this new driver.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20230306151354.132973-1-jbrunet@baylibre.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
This commit is contained in:
Jerome Brunet 2023-03-06 16:13:54 +01:00 • committed by Neil Armstrong
parent ea254644a2
commit c2e9012bb3
1 changed files with 13 additions and 12 deletions
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25
arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
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@ -773,16 +773,23 @@
};
};
eth-phy-mux@55c {
compatible = "mdio-mux-mmioreg", "mdio-mux";
eth_phy_mux: mdio@558 {
reg = <0x0 0x558 0x0 0xc>;
compatible = "amlogic,gxl-mdio-mux";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x0 0x55c 0x0 0x4>;
mux-mask = <0xffffffff>;
clocks = <&clkc CLKID_FCLK_DIV4>;
clock-names = "ref";
mdio-parent-bus = <&mdio0>;
internal_mdio: mdio@e40908ff {
reg = <0xe40908ff>;
external_mdio: mdio@0 {
reg = <0x0>;
#address-cells = <1>;
#size-cells = <0>;
};
internal_mdio: mdio@1 {
reg = <0x1>;
#address-cells = <1>;
#size-cells = <0>;
@ -793,12 +800,6 @@
max-speed = <100>;
};
};
external_mdio: mdio@2009087f {
reg = <0x2009087f>;
#address-cells = <1>;
#size-cells = <0>;
};
};
};