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c3be832427
On some WLR-7100 routers, significant packet loss was observed. This is
fixed by configuring a delay on the GMAC0 RXD and RXDV lines.
The values used in this commit are copied from the values used by the
stock firmare (based on register dumping).
Out of four test routers, the problem was consistently observed on two.
It is unclear what the relevant difference is exactly (the two working
routers were v1 001 with AR1022 and v1 002 with AR9342, the two broken
routers were both v1 002 with AR1022). All PCB routing also seems
identical, so maybe there is some stray capacitance on some of these
that adds just enough delay or so...
With this change, the packet loss disappears on the broken routers,
without introducing new packet loss on the previously working routers.
Note that the PHY *also* has delays enabled (through
`qca,ar8327-initvals`) on both RX and TX lines, but apparently that is
not enough, or it is not effective (registers have been verified to be
written).
For detailed discussion of this issue and debug history, see
https://forum.openwrt.org/t/sitecom-wlr-7100-development-progress/79641
Signed-off-by: Matthijs Kooijman <matthijs@stdin.nl>
(cherry picked from commit d2ce3a61aa)
168 lines
2.6 KiB
Plaintext
168 lines
2.6 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
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#include "ar9344.dtsi"
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/input/input.h>
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/ {
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model = "Sitecom WLR-7100 (X7 AC1200)";
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compatible = "sitecom,wlr-7100", "qca,ar9344";
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aliases {
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led-boot = &led_power;
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led-failsafe = &led_power;
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led-running = &led_power;
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led-upgrade = &led_power;
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};
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keys {
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compatible = "gpio-keys";
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wlan2g {
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label = "2.4GHz";
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gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
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linux,code = <KEY_RESTART>;
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};
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wlan5g {
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label = "5GHz";
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gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
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linux,code = <KEY_WPS_BUTTON>;
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};
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};
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leds {
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compatible = "gpio-leds";
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ops {
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label = "white:ops";
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gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
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};
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led_power: power {
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label = "amber:power";
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gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
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default-state = "on";
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};
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wlan2g {
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label = "blue:wlan2g";
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gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
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linux,default-trigger = "phy1tpt";
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};
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};
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};
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ð0 {
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status = "okay";
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pll-data = <0x06000000 0x00000101 0x00001616>;
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phy-mode = "rgmii";
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phy-handle = <&phy0>;
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gmac-config {
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device = <&gmac>;
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rgmii-gmac0 = <1>;
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rxdv-delay = <3>;
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rxd-delay = <3>;
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};
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};
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&mdio0 {
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status = "okay";
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phy0: ethernet-phy@0 {
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reg = <0>;
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phy-mode = "rgmii";
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qca,ar8327-initvals = <
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0x04 0x87a00000 /* PORT0 PAD Mode */
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0x0c 0x01000000 /* PORT6 PAD Mode */
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0x10 0x80000000 /* PWS_REG_VALUE */
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0x7c 0x000000fe /* PORT0_STATUS */
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0x94 0x000000fe /* PORT6_STATUS */
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>;
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};
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};
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&pcie {
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status = "okay";
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wifi@0,0 {
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compatible = "qcom,ath10k";
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reg = <0x0000 0 0 0 0>;
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};
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};
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&ref {
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clock-frequency = <25000000>;
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};
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&spi {
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status = "okay";
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flash@0 {
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compatible = "jedec,spi-nor";
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reg = <0>;
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spi-max-frequency = <25000000>;
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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partition@0 {
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label = "u-boot";
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reg = <0x000000 0x030000>;
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read-only;
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};
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uenv: partition@30000 {
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label = "u-boot-env";
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reg = <0x030000 0x010000>;
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read-only;
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};
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partition@40000 {
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compatible = "denx,uimage";
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label = "firmware";
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reg = <0x040000 0x750000>;
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};
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partition@790000 {
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label = "backup";
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reg = <0x790000 0x010000>;
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read-only;
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};
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partition@7a0000 {
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label = "storage";
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reg = <0x7a0000 0x050000>;
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read-only;
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};
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art: partition@7f0000 {
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label = "art";
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reg = <0x7f0000 0x010000>;
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read-only;
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};
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};
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};
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};
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&usb {
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status = "okay";
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};
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&usb_phy {
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status = "okay";
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};
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&wmac {
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status = "okay";
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qca,no-eeprom;
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};
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