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    Subject[PATCH 5.10 354/717] arm64: dts: meson: g12b: w400: fix PHY deassert timing requirements
    Date
    From: Stefan Agner <stefan@agner.ch>

    [ Upstream commit 9e454e37dc7c0ee9e108d70b983e7a71332aedff ]

    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: 2cd2310fca4c ("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
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    arch/arm64/boot/dts/amlogic/meson-g12b-w400.dtsi | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-w400.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-w400.dtsi
    index 2802ddbb83ac7..feb0885047400 100644
    --- a/arch/arm64/boot/dts/amlogic/meson-g12b-w400.dtsi
    +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-w400.dtsi
    @@ -264,7 +264,7 @@
    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>;
    --
    2.27.0


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