On Mo, 2015-02-23 at 10:15 +0100, Steffen Trumtrar wrote:
> --- /dev/null
> +++ b/arch/arm/boards/altera-socdk/board.c
> @@ -0,0 +1,38 @@
> +static int ksz9021rn_phy_fixup(struct phy_device *dev)
> +{
> + phy_write(dev, 0x09, 0x0f00);
> +
> + /* rx skew */
> + phy_write(dev, 0x0b, 0x8105);
> + phy_write(dev, 0x0c, 0x0000);
> +
> + /* clk/ctrl skew */
> + phy_write(dev, 0x0b, 0x8104);
> + phy_write(dev, 0x0c, 0xa0d0);
> +
> + return 0;
> +}
> +
> +static int socfpga_console_init(void)
> +{
> + if (!of_machine_is_compatible("altr,socdk"))
> + return 0;
> +
> + phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK,
> + ksz9021rn_phy_fixup);
> +
> + return 0;
> +}
> +console_initcall(socfpga_console_init);
> --- /dev/null
> +++ b/arch/arm/dts/socfpga_cyclone5_socdk.dts
> +&gmac1 {
> + status = "okay";
> + phy-mode = "rgmii";
> +
> + rxd0-skew-ps = <0>;
> + rxd1-skew-ps = <0>;
> + rxd2-skew-ps = <0>;
> + rxd3-skew-ps = <0>;
> + txen-skew-ps = <0>;
> + txc-skew-ps = <2600>;
> + rxdv-skew-ps = <0>;
> + rxc-skew-ps = <2000>;
> +};
It seems that with the DT-based configuration of the skew values, the
phy_fixup in board.c is not necessary.
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