| Message ID | 20200507151244.24218-1-grygorii.strashko@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] ARM: dts: am437x: fix networking on boards with ksz9031 phy | expand |
On Thu, 2020-05-07 at 18:12 +0300, Grygorii Strashko wrote: > Since commit bcf3440c6dd7 ("net: phy: micrel: add phy-mode support for > the > KSZ9031 PHY") the networking is broken on boards: > am437x-gp-evm > am437x-sk-evm > am437x-idk-evm > > All above boards have phy-mode = "rgmii" and this is worked before, > because > KSZ9031 PHY started with default RGMII internal delays configuration > (TX > off, RX on 1.2 ns) and MAC provided TX delay. After above commit, the > KSZ9031 PHY starts handling phy mode properly and disables RX delay, > as > result networking is become broken. > > Fix it by switching to phy-mode = "rgmii-rxid" to reflect previous > behavior. > > Cc: Oleksij Rempel <o.rempel@pengutronix.de> > Cc: Andrew Lunn <andrew@lunn.ch> > Cc: Philippe Schenker <philippe.schenker@toradex.com> > Fixes: commit bcf3440c6dd7 ("net: phy: micrel: add phy-mode support > for the KSZ9031 PHY") > Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Reviewed-by: Philippe Schenker <philippe.schenker@toradex.com> > --- > arch/arm/boot/dts/am437x-gp-evm.dts | 2 +- > arch/arm/boot/dts/am437x-idk-evm.dts | 2 +- > arch/arm/boot/dts/am437x-sk-evm.dts | 4 ++-- > 3 files changed, 4 insertions(+), 4 deletions(-) > > diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts > b/arch/arm/boot/dts/am437x-gp-evm.dts > index 811c8cae315b..d692e3b2812a 100644 > --- a/arch/arm/boot/dts/am437x-gp-evm.dts > +++ b/arch/arm/boot/dts/am437x-gp-evm.dts > @@ -943,7 +943,7 @@ > > &cpsw_emac0 { > phy-handle = <ðphy0>; > - phy-mode = "rgmii"; > + phy-mode = "rgmii-rxid"; > }; > > &elm { > diff --git a/arch/arm/boot/dts/am437x-idk-evm.dts > b/arch/arm/boot/dts/am437x-idk-evm.dts > index 9f66f96d09c9..a958f9ee4a5a 100644 > --- a/arch/arm/boot/dts/am437x-idk-evm.dts > +++ b/arch/arm/boot/dts/am437x-idk-evm.dts > @@ -504,7 +504,7 @@ > > &cpsw_emac0 { > phy-handle = <ðphy0>; > - phy-mode = "rgmii"; > + phy-mode = "rgmii-rxid"; > }; > > &rtc { > diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts > b/arch/arm/boot/dts/am437x-sk-evm.dts > index 25222497f828..4d5a7ca2e25d 100644 > --- a/arch/arm/boot/dts/am437x-sk-evm.dts > +++ b/arch/arm/boot/dts/am437x-sk-evm.dts > @@ -833,13 +833,13 @@ > > &cpsw_emac0 { > phy-handle = <ðphy0>; > - phy-mode = "rgmii"; > + phy-mode = "rgmii-rxid"; > dual_emac_res_vlan = <1>; > }; > > &cpsw_emac1 { > phy-handle = <ðphy1>; > - phy-mode = "rgmii"; > + phy-mode = "rgmii-rxid"; > dual_emac_res_vlan = <2>; > }; >
* Philippe Schenker <philippe.schenker@toradex.com> [200507 15:17]: > On Thu, 2020-05-07 at 18:12 +0300, Grygorii Strashko wrote: > > Since commit bcf3440c6dd7 ("net: phy: micrel: add phy-mode support for > > the > > KSZ9031 PHY") the networking is broken on boards: > > am437x-gp-evm > > am437x-sk-evm > > am437x-idk-evm > > > > All above boards have phy-mode = "rgmii" and this is worked before, > > because > > KSZ9031 PHY started with default RGMII internal delays configuration > > (TX > > off, RX on 1.2 ns) and MAC provided TX delay. After above commit, the > > KSZ9031 PHY starts handling phy mode properly and disables RX delay, > > as > > result networking is become broken. > > > > Fix it by switching to phy-mode = "rgmii-rxid" to reflect previous > > behavior. > > > > Cc: Oleksij Rempel <o.rempel@pengutronix.de> > > Cc: Andrew Lunn <andrew@lunn.ch> > > Cc: Philippe Schenker <philippe.schenker@toradex.com> > > Fixes: commit bcf3440c6dd7 ("net: phy: micrel: add phy-mode support > > for the KSZ9031 PHY") > > Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> > > Reviewed-by: Philippe Schenker <philippe.schenker@toradex.com> Thanks applying into fixes. Tony
diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts index 811c8cae315b..d692e3b2812a 100644 --- a/arch/arm/boot/dts/am437x-gp-evm.dts +++ b/arch/arm/boot/dts/am437x-gp-evm.dts @@ -943,7 +943,7 @@ &cpsw_emac0 { phy-handle = <ðphy0>; - phy-mode = "rgmii"; + phy-mode = "rgmii-rxid"; }; &elm { diff --git a/arch/arm/boot/dts/am437x-idk-evm.dts b/arch/arm/boot/dts/am437x-idk-evm.dts index 9f66f96d09c9..a958f9ee4a5a 100644 --- a/arch/arm/boot/dts/am437x-idk-evm.dts +++ b/arch/arm/boot/dts/am437x-idk-evm.dts @@ -504,7 +504,7 @@ &cpsw_emac0 { phy-handle = <ðphy0>; - phy-mode = "rgmii"; + phy-mode = "rgmii-rxid"; }; &rtc { diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts index 25222497f828..4d5a7ca2e25d 100644 --- a/arch/arm/boot/dts/am437x-sk-evm.dts +++ b/arch/arm/boot/dts/am437x-sk-evm.dts @@ -833,13 +833,13 @@ &cpsw_emac0 { phy-handle = <ðphy0>; - phy-mode = "rgmii"; + phy-mode = "rgmii-rxid"; dual_emac_res_vlan = <1>; }; &cpsw_emac1 { phy-handle = <ðphy1>; - phy-mode = "rgmii"; + phy-mode = "rgmii-rxid"; dual_emac_res_vlan = <2>; };
Since commit bcf3440c6dd7 ("net: phy: micrel: add phy-mode support for the KSZ9031 PHY") the networking is broken on boards: am437x-gp-evm am437x-sk-evm am437x-idk-evm All above boards have phy-mode = "rgmii" and this is worked before, because KSZ9031 PHY started with default RGMII internal delays configuration (TX off, RX on 1.2 ns) and MAC provided TX delay. After above commit, the KSZ9031 PHY starts handling phy mode properly and disables RX delay, as result networking is become broken. Fix it by switching to phy-mode = "rgmii-rxid" to reflect previous behavior. Cc: Oleksij Rempel <o.rempel@pengutronix.de> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Philippe Schenker <philippe.schenker@toradex.com> Fixes: commit bcf3440c6dd7 ("net: phy: micrel: add phy-mode support for the KSZ9031 PHY") Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> --- arch/arm/boot/dts/am437x-gp-evm.dts | 2 +- arch/arm/boot/dts/am437x-idk-evm.dts | 2 +- arch/arm/boot/dts/am437x-sk-evm.dts | 4 ++-- 3 files changed, 4 insertions(+), 4 deletions(-)