[ Upstream commit
1c7412530d5d0e0a0b27f1642f5c13c8b9f36f05 ]
According to the datasheet (Rev. 1.9) the RTL8211F requires at least
72ms "for internal circuits settling time" before accessing the PHY
registers. This fixes an issue where the Ethernet link doesn't come up
when using ip link set down/up:
[ 29.360965] meson8b-dwmac
ff3f0000.ethernet eth0: Link is Down
[ 34.569012] meson8b-dwmac
ff3f0000.ethernet eth0: PHY [0.0:00] driver [RTL8211F Gigabit Ethernet] (irq=31)
[ 34.676732] meson8b-dwmac
ff3f0000.ethernet: Failed to reset the dma
[ 34.678874] meson8b-dwmac
ff3f0000.ethernet eth0: stmmac_hw_setup: DMA engine initialization failed
[ 34.687850] meson8b-dwmac
ff3f0000.ethernet eth0: stmmac_open: Hw setup failed
Fixes:
658e4129bb81 ("arm64: dts: meson: g12b: odroid-n2: add the Ethernet PHY reset line")
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/df3f5c4fc6e43c55429fd3662a636036a21eed49.1607363522.git.stefan@agner.ch
Signed-off-by: Sasha Levin <sashal@kernel.org>
max-speed = <1000>;
reset-assert-us = <10000>;
- reset-deassert-us = <30000>;
+ reset-deassert-us = <80000>;
reset-gpios = <&gpio GPIOZ_15 (GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN)>;
interrupt-parent = <&gpio_intc>;