A long running stress test on a custom board shipping an AXG SoCs and a
Realtek RTL8211F PHY revealed that after a few hours the connection
speed would drop drastically, from ~1000Mbps to ~3Mbps. At the same time
the 'macirq' (eth0) IRQ would stop being triggered at all and as
consequence the GMAC IRQs never ACKed.
After a painful investigation the problem seemed to be due to a wrong
defined IRQ type for the GMAC IRQ that should be LEVEL_HIGH instead of
EDGE_RISING.
The change in the macirq IRQ type also solved another long standing
issue affecting this SoC/PHY where EEE was causing the network
connection to die after stressing it with iperf3 (even though much
sooner). It's now possible to remove the 'eee-broken-1000t' quirk as
well.
Fixes: 9c15795a4f96 ("ARM: dts: meson8b-odroidc1: ethernet support")
Signed-off-by: Carlo Caione <ccaione@xxxxxxxxxxxx>
---
arch/arm/boot/dts/meson.dtsi | 2 +-
arch/arm/boot/dts/meson8b-odroidc1.dts | 1 -
2 files changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/meson.dtsi b/arch/arm/boot/dts/meson.dtsi
index 0d9faf1a51ea..a86b89086334 100644
--- a/arch/arm/boot/dts/meson.dtsi
+++ b/arch/arm/boot/dts/meson.dtsi
@@ -263,7 +263,7 @@
compatible = "amlogic,meson6-dwmac", "snps,dwmac";
reg = <0xc9410000 0x10000
0xc1108108 0x4>;
- interrupts = <GIC_SPI 8 IRQ_TYPE_EDGE_RISING>;
+ interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "macirq";
status = "disabled";
};
diff --git a/arch/arm/boot/dts/meson8b-odroidc1.dts b/arch/arm/boot/dts/meson8b-odroidc1.dts
index 58669abda259..a951a6632d0c 100644
--- a/arch/arm/boot/dts/meson8b-odroidc1.dts
+++ b/arch/arm/boot/dts/meson8b-odroidc1.dts
@@ -221,7 +221,6 @@
/* Realtek RTL8211F (0x001cc916) */
eth_phy: ethernet-phy@0 {
reg = <0>;
- eee-broken-1000t;
interrupt-parent = <&gpio_intc>;
/* GPIOH_3 */
interrupts = <17 IRQ_TYPE_LEVEL_LOW>;
--
2.19.1
