Re: Setting link down or up in software

On 13/01/2017 17:28, Zefir Kurtisi wrote:

As for your specific problem: since I fought myself with the PHY/ETH subsystems
over the past months, I might remember something relevant to your issue. Could you
give some more info on your setup (PHY driver, opmode (SGMII, RGMII, etc.), ETH).

Hello Zefir,

My boards are using these drivers:

http://lxr.free-electrons.com/source/drivers/net/ethernet/aurora/nb8800.c
http://lxr.free-electrons.com/source/drivers/net/phy/at803x.c

The relevant device tree nodes are:

		eth0: ethernet@26000 {
			compatible = "sigma,smp8734-ethernet";
			reg = <0x26000 0x800>;
			interrupts = <38 IRQ_TYPE_LEVEL_HIGH>;
			clocks = <&clkgen SYS_CLK>;
		};

&eth0 {
	phy-connection-type = "rgmii";
	phy-handle = <&eth0_phy>;
	#address-cells = <1>;
	#size-cells = <0>;

	/* Atheros AR8035 */
	eth0_phy: ethernet-phy@4 {
		compatible = "ethernet-phy-id004d.d072",
			     "ethernet-phy-ieee802.3-c22";
		interrupts = <37 IRQ_TYPE_EDGE_RISING>;
		reg = <4>;
	};
};

If I comment the PHY "interrupts" property, then the PHY framework
falls back to polling.

Am I forgetting important information?

Regards.