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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Christian Zigotzky Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org References: <20260717132401.2653252-1-mwalle@kernel.org> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Sean Anderson In-Reply-To: <20260717132401.2653252-1-mwalle@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT On 7/17/26 09:20, Michael Walle wrote: > Before converting to the phylink interface, the init function would have > set a non-reserved I/F mode in the maccfg2 register. After converting to > phylink, 0 is written as mode, which is a reserved value (although it's > the hardware default). Without a valid mode, a SGMII link is never > established between the MAC and the PHY and thus .link_up() is never > called which could set the correct mode according to the actual speed. > > Fix it by setting the maximum speed of the phy_interface_t in use in > .mac_config() - just like the driver did before the phylink conversion. > > Fixes: 5d93cfcf7360 ("net: dpaa: Convert to phylink") > Suggested-by: Sean Anderson > Signed-off-by: Michael Walle > --- > I didn't grab Sean's Rb tag as this is somewhat different. > > Changes in v3: > - keep the mode setting also in .adjust_link(). > - reword the commit message, to be (hopefully) more precise > - Link to v2: https://lore.kernel.org/r/20260710143430.2276141-1-mwalle@kernel.org/ > > Changes in v2: > - the setting is/was based on the maximum speed, not the current > speed. thus, move the setting into mac_config(). > - Link to v1: https://lore.kernel.org/r/20260706121011.1948906-1-mwalle@kernel.org/ > > .../net/ethernet/freescale/fman/fman_dtsec.c | 17 ++++++++++++----- > 1 file changed, 12 insertions(+), 5 deletions(-) > > diff --git a/drivers/net/ethernet/freescale/fman/fman_dtsec.c b/drivers/net/ethernet/freescale/fman/fman_dtsec.c > index fe35703c509e..b8d70c0ecb6c 100644 > --- a/drivers/net/ethernet/freescale/fman/fman_dtsec.c > +++ b/drivers/net/ethernet/freescale/fman/fman_dtsec.c > @@ -900,22 +900,28 @@ static void dtsec_mac_config(struct phylink_config *config, unsigned int mode, > { > struct mac_device *mac_dev = fman_config_to_mac(config); > struct dtsec_regs __iomem *regs = mac_dev->fman_mac->regs; > - u32 tmp; > + u32 ecntrl, maccfg2; > + > + maccfg2 = ioread32be(®s->maccfg2); > + maccfg2 &= ~(MACCFG2_NIBBLE_MODE | MACCFG2_BYTE_MODE); > > switch (state->interface) { > case PHY_INTERFACE_MODE_RMII: > - tmp = DTSEC_ECNTRL_RMM; > + ecntrl = DTSEC_ECNTRL_RMM; > + maccfg2 |= MACCFG2_NIBBLE_MODE; > break; > case PHY_INTERFACE_MODE_RGMII: > case PHY_INTERFACE_MODE_RGMII_ID: > case PHY_INTERFACE_MODE_RGMII_RXID: > case PHY_INTERFACE_MODE_RGMII_TXID: > - tmp = DTSEC_ECNTRL_GMIIM | DTSEC_ECNTRL_RPM; > + ecntrl = DTSEC_ECNTRL_GMIIM | DTSEC_ECNTRL_RPM; > + maccfg2 |= MACCFG2_BYTE_MODE; > break; > case PHY_INTERFACE_MODE_SGMII: > case PHY_INTERFACE_MODE_1000BASEX: > case PHY_INTERFACE_MODE_2500BASEX: > - tmp = DTSEC_ECNTRL_TBIM | DTSEC_ECNTRL_SGMIIM; > + ecntrl = DTSEC_ECNTRL_TBIM | DTSEC_ECNTRL_SGMIIM; > + maccfg2 |= MACCFG2_BYTE_MODE; > break; > default: > dev_warn(mac_dev->dev, "cannot configure dTSEC for %s\n", > @@ -923,7 +929,8 @@ static void dtsec_mac_config(struct phylink_config *config, unsigned int mode, > return; > } > > - iowrite32be(tmp, ®s->ecntrl); > + iowrite32be(ecntrl, ®s->ecntrl); > + iowrite32be(maccfg2, ®s->maccfg2); > } > > static void dtsec_link_up(struct phylink_config *config, struct phy_device *phy, Reviewed-by: Sean Anderson Christian, can you test this patch with ethernet at 100/1G speed if you still have access to those P5020/P5040 boards? https://lore.kernel.org/all/0bfc8f3d-cb62-25f4-2590-ff424adbe48a@xenosoft.de/