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In 4.14 the delays were not cleared, so setting "rgmii" as phy-mode did not affect delays set by the bootloader. With 5.4 kernel the situation changed and the ethernet interface stopped working. "rgmii" requires rx and tx delays depending on the hardware circuit and wiring. The mac or the phy can add these delays. - "rgmii": delays are controlled by the mac - "rgmii-id": delays are controlled by the phy More Information in Linux Kernel Tree: Documentation/devicetree/bindings/net/ethernet-controller.yaml "rgmii" should be the preferred mode, which allows the mac layer to turn off the dealys completely if they are not needed. However, the delays are not set correctly, which causes the ethernet interface to be broken. Just taking the ethernetpart from the litebeam ac gen2 will fix the issue. Explained-by: David Bauer <mail@david-bauer.net> Signed-off-by: Nick Hainke <vincent@systemli.org>
66 lines
1.0 KiB
Plaintext
66 lines
1.0 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0-only
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#include "ar9342_ubnt_wa.dtsi"
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/ {
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compatible = "ubnt,nanobeam-ac", "ubnt,wa", "qca,ar9342";
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model = "Ubiquiti NanoBeam AC (WA)";
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aliases {
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led-boot = &led_rssi3;
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led-failsafe = &led_rssi3;
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led-upgrade = &led_rssi3;
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};
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leds {
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compatible = "gpio-leds";
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rssi0 {
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label = "blue:rssi0";
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gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
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};
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rssi1 {
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label = "blue:rssi1";
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gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
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};
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rssi2 {
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label = "blue:rssi2";
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gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
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};
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led_rssi3: rssi3 {
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label = "blue:rssi3";
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gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
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};
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};
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};
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&mdio0 {
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status = "okay";
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phy-mask = <4>;
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phy4: ethernet-phy@4 {
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reg = <4>;
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};
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};
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ð0 {
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status = "okay";
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/* default for ar934x, except for 1000M and 10M */
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pll-data = <0x02000000 0x00000101 0x00001313>;
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mtd-mac-address = <&art 0x0>;
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phy-mode = "rgmii-id";
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phy-handle = <&phy4>;
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gmac-config {
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device = <&gmac>;
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rxd-delay = <3>;
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rxdv-delay = <3>;
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};
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};
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