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arm64: dts: meson: g12b: w400: fix PHY deassert timing requirements

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According to the datasheet (Rev. 1.9) the RTL8211F requires at least
72ms "for internal circuits settling time" before accessing the PHY
egisters. On similar boards with the same PHY this fixes an issue where
Ethernet link would not come up when using ip link set down/up.

Fixes: 2cd2310fca ("arm64: dts: meson-g12b-ugoos-am6: add initial device-tree")
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/46298e66572784c44f873f1b71cc4ab3d8fc5aa6.1607363522.git.stefan@agner.ch
This commit is contained in:
Stefan Agner
2020-12-07 18:58:03 +01:00
committed by Kevin Hilman
parent 3d07c3b3a8
commit 9e454e37dc
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/boot/dts/amlogic/meson-g12b-w400.dtsi
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@@ -264,7 +264,7 @@ external_phy: ethernet-phy@0 {
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>;