The PHY used on the Freescale i.MX6Q/DL SABRE boards is qualified as 'rgmii' instead of 'rgmii-id'. Meaning the RX and TX delays that were previously added by the MAC when required, but are now provided internally by the PHY (and the MAC should no longer add the RX or TX delays in this case).
This patch fixes the network problems seen on the Freescale i.MX6Q/DL SABRE boards and makes a difference when correctly loading the NFS rootfs on startup. Link: https://lkml.kernel.org/r/1397569821-5530-4-git-send-email-thomas.petazz...@free-electrons.com Tested-by: Steve Twiss <stwiss.opensou...@diasemi.com> Tested-by: Adam Thomson <adam.thom...@diasemi.com> Signed-off-by: Steve Twiss <stwiss.opensou...@diasemi.com> --- arch/arm/boot/dts/imx6qdl-sabresd.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi index a070506..185fb17 100644 --- a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi +++ b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi @@ -202,7 +202,7 @@ &fec { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_enet>; - phy-mode = "rgmii"; + phy-mode = "rgmii-id"; phy-reset-gpios = <&gpio1 25 GPIO_ACTIVE_LOW>; status = "okay"; }; -- 1.9.3
