arm: dts: meson: Fix IRQ trigger type for macirq

[ Upstream commit e35e26b26e955c53e61c154ba26b9bb15da6b858 ]

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@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/arm/boot/dts/meson.dtsi b/arch/arm/boot/dts/meson.dtsi
index 0d9faf1a51eac0cca63b54cb272bb1c57e8261d2..a86b890863347bc4b0b623bfb33e9f4090e1439b 100644 (file)
--- a/arch/arm/boot/dts/meson.dtsi
+++ b/arch/arm/boot/dts/meson.dtsi
@@ -263,7 +263,7 @@ ethmac: ethernet@c9410000 {
                        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 58669abda2594d4979086695db3af0aee095983b..a951a6632d0c7d3de2d1bd64c7383f06ed9f16c4 100644 (file)
--- a/arch/arm/boot/dts/meson8b-odroidc1.dts
+++ b/arch/arm/boot/dts/meson8b-odroidc1.dts
@@ -221,7 +221,6 @@ mdio {
                /* 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>;