On Mon, Nov 03, 2014 at 11:12:15AM +0100, Wadim Egorov wrote:
> The KSZ9031 gigabit phy on the PBA-B-01 carrier board needs special settings
> for the RGMII skew control register.
>
> Signed-off-by: Wadim Egorov <[email protected]>
Applied, thanks
Sascha
> ---
> arch/arm/dts/am335x-phytec-phyflex.dts | 11 +++++++++++
> 1 files changed, 11 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/dts/am335x-phytec-phyflex.dts
> b/arch/arm/dts/am335x-phytec-phyflex.dts
> index 4dde328..c4481f5 100644
> --- a/arch/arm/dts/am335x-phytec-phyflex.dts
> +++ b/arch/arm/dts/am335x-phytec-phyflex.dts
> @@ -212,6 +212,17 @@
> phy_id = <&davinci_mdio>, <1>;
> phy-mode = "rgmii";
> dual_emac_res_vlan = <1>;
> +
> + /* clock skew correction, maximum possible on KSZ9031 is
> + 2^5 - 1 * 0,06ns = 1860ps, micrel datasheet M9999-081712-0.11 p.58*/
> + rxc-skew-ps = <1860>;
> + txc-skew-ps = <1860>;
> +
> + /* align tx signals to zero, leave rx to default */
> + txd0-skew-ps = <0>;
> + txd1-skew-ps = <0>;
> + txd2-skew-ps = <0>;
> + txd3-skew-ps = <0>;
> };
>
> &cpsw_emac1 {
> --
> 1.7.0.4
>
>
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