On Sat, Jul 27, 2019 at 11:40:11AM +0200, René van Dorst wrote:
> In phylink_parse_fixedlink() the pl->link_config.advertising bits are AND
> with pl->supported, pl->supported is zeroed and only the speed/duplex
> modes and MII bits are set.
> So pl->link_config.advertising always loses the flow control/pause bits.
>
> By setting Pause and Asym_Pause bits in pl->supported, the flow control
> work again when devicetree "pause" is set in fixes-link node and the MAC
> advertise that is supports pause.
>
> Results with this patch.
>
> Legend:
> - DT = 'Pause' is set in the fixed-link in devicetree.
> - validate() = ‘Yes’ means phylink_set(mask, Pause) is set in the
> validate().
> - flow = results reported my link is Up line.
>
> +-----+------------+-------+
> | DT | validate() | flow |
> +-----+------------+-------+
> | Yes | Yes | rx/tx |
> | No | Yes | off |
> | Yes | No | off |
> +-----+------------+-------+
>
> Fixes: 9525ae83959b ("phylink: add phylink infrastructure")
> Signed-off-by: René van Dorst <opensou...@vdorst.com>
Acked-by: Russell King <rmk+ker...@armlinux.org.uk>
Thanks.
> ---
> drivers/net/phy/phylink.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
> index 5d0af041b8f9..a6aebaa14338 100644
> --- a/drivers/net/phy/phylink.c
> +++ b/drivers/net/phy/phylink.c
> @@ -216,6 +216,8 @@ static int phylink_parse_fixedlink(struct phylink *pl,
> pl->supported, true);
> linkmode_zero(pl->supported);
> phylink_set(pl->supported, MII);
> + phylink_set(pl->supported, Pause);
> + phylink_set(pl->supported, Asym_Pause);
> if (s) {
> __set_bit(s->bit, pl->supported);
> } else {
> --
> 2.20.1
>
>
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up
According to speedtest.net: 11.9Mbps down 500kbps up
