Messages in this thread | | | Date | Mon, 19 Sep 2022 12:29:34 +0100 | From | "Russell King (Oracle)" <> | Subject | Re: [PATCH net-next v2 3/5] net: mediatek: sgmii: mtk_pcs_setup_mode_an: don't rely on register defaults |
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On Mon, Sep 19, 2022 at 10:37:10AM +0200, Alexander Couzens wrote: > Ensure autonegotiation is enabled. > > Signed-off-by: Alexander Couzens <lynxis@fe80.eu> > --- > drivers/net/ethernet/mediatek/mtk_sgmii.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/net/ethernet/mediatek/mtk_sgmii.c b/drivers/net/ethernet/mediatek/mtk_sgmii.c > index 18de85709e87..6f4c1ca5a36f 100644 > --- a/drivers/net/ethernet/mediatek/mtk_sgmii.c > +++ b/drivers/net/ethernet/mediatek/mtk_sgmii.c > @@ -32,12 +32,13 @@ static int mtk_pcs_setup_mode_an(struct mtk_pcs *mpcs) > regmap_write(mpcs->regmap, SGMSYS_PCS_LINK_TIMER, > SGMII_LINK_TIMER_DEFAULT); > > + /* disable remote fault & enable auto neg */ > regmap_read(mpcs->regmap, SGMSYS_SGMII_MODE, &val); > - val |= SGMII_REMOTE_FAULT_DIS; > + val |= SGMII_REMOTE_FAULT_DIS | SGMII_SPEED_DUPLEX_AN; > regmap_write(mpcs->regmap, SGMSYS_SGMII_MODE, val); > > regmap_read(mpcs->regmap, SGMSYS_PCS_CONTROL_1, &val); > - val |= SGMII_AN_RESTART; > + val |= SGMII_AN_RESTART | SGMII_AN_ENABLE;
I'm not sure if I've asked this before, but why does SGMII_AN_RESTART need to be set here? It could do with a comment in the code.
Thanks.
-- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
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