[PATCH 7/8] arm: kirkwood: Pogoplug-V4 : Add board implementation

[Marek Behún]

> +#if defined(CONFIG_RESET_PHY_R)
> +/* Configure and initialize PHY */
> +void reset_phy(void)
> +{
> +	u16 reg;
> +	int phyaddr;
> +	char *name = "ethernet-controller at 72000";
> +	char *eth0_path = "/ocp at f1000000/ethernet-controller at 72000";
> +
> +	if (miiphy_set_current_dev(name))
> +		return;
> +
> +	phyaddr = fdt_get_phy_addr(eth0_path);
> +	if (phyaddr < 0)
> +		return;
> +
> +	/*
> +	 * Enable RGMII delay on Tx and Rx for CPU port
> +	 * Ref: sec 4.7.2 of chip datasheet
> +	 */
> +	miiphy_write(name, phyaddr, MV88E1116_PGADR_REG, 2);
> +	miiphy_read(name, phyaddr, MV88E1116_MAC_CTRL_REG, &reg);
> +	reg |= (MV88E1116_RGMII_RXTM_CTRL | MV88E1116_RGMII_TXTM_CTRL);
> +	miiphy_write(name, phyaddr, MV88E1116_MAC_CTRL_REG, reg);
> +	miiphy_write(name, phyaddr, MV88E1116_PGADR_REG, 0);
> +
> +	/* reset the phy */
> +	miiphy_reset(name, phyaddr);
> +
> +	printf("88E1116 Initialized on %s\n", name);
> +}

This PHY has a driver in U-Boot, drivers/net/phy/marvell.c,
structure M88E1118_driver.

There the m88e1118_config() method already does one thing of what you
are doing here: enabling rgmii delays. It also sets LED config, but
does not reset the PHY. You can add call to phy_reset() there...

Marek