| Message ID | 14754fd95378b78eb9a0a3f8b6bab13f7263c7f1.1606828668.git.stefan@agner.ch |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v2,1/5] arm64: dts: meson: g12b: odroid-n2: fix PHY deassert timing requirements | expand |
On Tue, Dec 1, 2020 at 2:21 PM Stefan Agner <stefan@agner.ch> wrote: > > According to the datasheet (Rev. 1.9) the RTL8211F requires at least > 72ms "for internal circuits settling time" before accessing the PHY > egisters. 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") > Signed-off-by: Stefan Agner <stefan@agner.ch> with the "registers" typo above fixed: Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi index 6982632ae646..39a09661c5f6 100644 --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi @@ -413,7 +413,7 @@ 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>;
According to the datasheet (Rev. 1.9) the RTL8211F requires at least 72ms "for internal circuits settling time" before accessing the PHY egisters. 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") Signed-off-by: Stefan Agner <stefan@agner.ch> --- arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)