[PATCH] arm64: defconfig: Change CONFIG_AT803X_PHY from m to y

[PATCH] arm64: defconfig: Change CONFIG_AT803X_PHY from m to y

[Peng Fan]

From: Peng Fan <peng.fan@nxp.com>

With phy-reset-gpios are enabled for i.MX8MM-EVK board, phy
will be reset. Without CONFIG_AT803X_PHY as y, board will stop
booting in NFS DHCP, because phy is not ready. So mark
CONFIG_AT803X_PHY from m to y to make board boot when using nfs rootfs.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 arch/arm64/configs/defconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index c9a867ac32d4..cd778c9ea8a4 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -285,7 +285,7 @@ CONFIG_SNI_AVE=y
 CONFIG_SNI_NETSEC=y
 CONFIG_STMMAC_ETH=m
 CONFIG_MDIO_BUS_MUX_MMIOREG=y
-CONFIG_AT803X_PHY=m
+CONFIG_AT803X_PHY=y
 CONFIG_MARVELL_PHY=m
 CONFIG_MARVELL_10G_PHY=m
 CONFIG_MESON_GXL_PHY=m
-- 
2.16.4


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Re: [PATCH] arm64: defconfig: Change CONFIG_AT803X_PHY from m to y

[Shawn Guo]

On Mon, Nov 04, 2019 at 06:19:30AM +0000, Peng Fan wrote:
> From: Peng Fan <peng.fan@nxp.com>
> 
> With phy-reset-gpios are enabled for i.MX8MM-EVK board, phy
> will be reset. Without CONFIG_AT803X_PHY as y, board will stop
> booting in NFS DHCP, because phy is not ready. So mark
> CONFIG_AT803X_PHY from m to y to make board boot when using nfs rootfs.
> 
> Signed-off-by: Peng Fan <peng.fan@nxp.com>

Applied, thanks.

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Re: [PATCH] arm64: defconfig: Change CONFIG_AT803X_PHY from m to y

[Oliver Graute]

On 04/11/19, Peng Fan wrote:
> From: Peng Fan <peng.fan@nxp.com>
> 
> With phy-reset-gpios are enabled for i.MX8MM-EVK board, phy
> will be reset. Without CONFIG_AT803X_PHY as y, board will stop
> booting in NFS DHCP, because phy is not ready. So mark
> CONFIG_AT803X_PHY from m to y to make board boot when using nfs rootfs.
> 
> Signed-off-by: Peng Fan <peng.fan@nxp.com>
> ---
>  arch/arm64/configs/defconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
> index c9a867ac32d4..cd778c9ea8a4 100644
> --- a/arch/arm64/configs/defconfig
> +++ b/arch/arm64/configs/defconfig
> @@ -285,7 +285,7 @@ CONFIG_SNI_AVE=y
>  CONFIG_SNI_NETSEC=y
>  CONFIG_STMMAC_ETH=m
>  CONFIG_MDIO_BUS_MUX_MMIOREG=y
> -CONFIG_AT803X_PHY=m
> +CONFIG_AT803X_PHY=y
>  CONFIG_MARVELL_PHY=m
>  CONFIG_MARVELL_10G_PHY=m
>  CONFIG_MESON_GXL_PHY=m
> -- 
> 2.16.4

Hello Peng,

this patch broke my imx8qm nfs setup. With the generic phy driver my
board is booting fine. But with the AT803X_PHY=y enabled  I'am running
into the following phy issue. So on my side it looks inverse as on
yours. What is the best proposal to fix this?

[    5.550442] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
[    5.573206] Sending DHCP requests ...... timed out!
[   95.339702] IP-Config: Retrying forever (NFS root)...
[   95.348873] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
[   99.438443] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
[   99.461206] Sending DHCP requests ...... timed out!
[  174.419639] IP-Config: Retrying forever (NFS root)...
[  174.428834] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
[  178.542418] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
[  178.565206] Sending DHCP requests .....
[  209.261271] random: crng init done
[  230.565202] . timed out!
[  260.577340] IP-Config: Retrying forever (NFS root)...
[  260.586497] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
[  264.686438] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
[  264.709206] Sending DHCP requests ...... timed out!
[  339.259701] IP-Config: Retrying forever (NFS root)...
[  339.268835] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
[  343.374422] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
[  343.405206] Sending DHCP requests ...... timed out!
[  433.171676] IP-Config: Retrying forever (NFS root)...
[  433.180842] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
[  437.294439] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
[  437.317206] Sending DHCP requests ...... timed out!
[  509.003660] IP-Config: Retrying forever (NFS root)...
[  509.012836] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
[  513.102416] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off

Best Regards,

Oliver

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Re: [PATCH] arm64: defconfig: Change CONFIG_AT803X_PHY from m to y

[Marc Gonzalez]

On 26/11/2019 15:54, Oliver Graute wrote:

> this patch broke my imx8qm nfs setup. With the generic phy driver my
> board is booting fine. But with the AT803X_PHY=y enabled  I'm running
> into the following phy issue. So on my side it looks inverse as on
> yours. What is the best proposal to fix this?
> 
> [    5.550442] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> [    5.573206] Sending DHCP requests ...... timed out!
> [   95.339702] IP-Config: Retrying forever (NFS root)...
> [   95.348873] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
> [   99.438443] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> [   99.461206] Sending DHCP requests ...... timed out!

Which DTS are you using?

I bet one dollar that 6d4cd041f0af triggered a latent bug in the DTS.

Regards.

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Re: [PATCH] arm64: defconfig: Change CONFIG_AT803X_PHY from m to y

[Oliver Graute]

On 27/11/19, Marc Gonzalez wrote:
> On 26/11/2019 15:54, Oliver Graute wrote:
> 
> > this patch broke my imx8qm nfs setup. With the generic phy driver my
> > board is booting fine. But with the AT803X_PHY=y enabled  I'm running
> > into the following phy issue. So on my side it looks inverse as on
> > yours. What is the best proposal to fix this?
> > 
> > [    5.550442] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> > [    5.573206] Sending DHCP requests ...... timed out!
> > [   95.339702] IP-Config: Retrying forever (NFS root)...
> > [   95.348873] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
> > [   99.438443] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> > [   99.461206] Sending DHCP requests ...... timed out!
> 
> Which DTS are you using?

I'am using this DTS which I'am currently working on:

https://lists.infradead.org/pipermail/linux-arm-kernel/2019-October/689501.html
> 
> I bet one dollar that 6d4cd041f0af triggered a latent bug in the DTS.

So what should I fix in my device tree?

Best regards,

Oliver

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Re: [PATCH] arm64: defconfig: Change CONFIG_AT803X_PHY from m to y

[Fabio Estevam]

Hi Oliver,

On Wed, Nov 27, 2019 at 9:47 AM Oliver Graute <oliver.graute@gmail.com> wrote:

> I'am using this DTS which I'am currently working on:
>
> https://lists.infradead.org/pipermail/linux-arm-kernel/2019-October/689501.html
> >
> > I bet one dollar that 6d4cd041f0af triggered a latent bug in the DTS.
>
> So what should I fix in my device tree?

Some suggestions you could try:

- Try to use phy-mode = "rgmii-id"; instead,
- The PHY address 0 does not match the reg value of 4, so you need to
double check the PHY address and make the @ and reg values to match.
- If you have a GPIO connected to the Ethernet PHY reset pin, then you
should describe it in the dts and also provide a delay as per the
AR803X datasheet.

Regards,

Fabio Estevam

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Re: [PATCH] arm64: defconfig: Change CONFIG_AT803X_PHY from m to y

[Oliver Graute]

On 27/11/19, Fabio Estevam wrote:
> Hi Oliver,
> 
> On Wed, Nov 27, 2019 at 9:47 AM Oliver Graute <oliver.graute@gmail.com> wrote:
> 
> > I'am using this DTS which I'am currently working on:
> >
> > https://lists.infradead.org/pipermail/linux-arm-kernel/2019-October/689501.html
> > >
> > > I bet one dollar that 6d4cd041f0af triggered a latent bug in the DTS.
> >
> > So what should I fix in my device tree?
> 
> Some suggestions you could try:
> 
> - Try to use phy-mode = "rgmii-id"; instead,
> - The PHY address 0 does not match the reg value of 4, so you need to
> double check the PHY address and make the @ and reg values to match.

ok I fix that in my dts.

> - If you have a GPIO connected to the Ethernet PHY reset pin, then you
> should describe it in the dts and also provide a delay as per the
> AR803X datasheet.

it seems that currently no ethernet phy reset gpio is connected on that
advantech eval board. The vendor says there is a optional resistor which can
be mounted.

Best regards,

Oliver

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Re: [PATCH] arm64: defconfig: Change CONFIG_AT803X_PHY from m to y

[Marc Gonzalez]

On 27/11/2019 13:46, Oliver Graute wrote:

> On 27/11/19, Marc Gonzalez wrote:
>
>> On 26/11/2019 15:54, Oliver Graute wrote:
>>
>>> this patch broke my imx8qm nfs setup. With the generic phy driver my
>>> board is booting fine. But with the AT803X_PHY=y enabled  I'm running
>>> into the following phy issue. So on my side it looks inverse as on
>>> yours. What is the best proposal to fix this?
>>>
>>> [    5.550442] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
>>> [    5.573206] Sending DHCP requests ...... timed out!
>>> [   95.339702] IP-Config: Retrying forever (NFS root)...
>>> [   95.348873] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
>>> [   99.438443] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
>>> [   99.461206] Sending DHCP requests ...... timed out!
>>
>> Which DTS are you using?
> 
> I'am using this DTS which I'am currently working on:
> 
> https://lists.infradead.org/pipermail/linux-arm-kernel/2019-October/689501.html
>>
>> I bet one dollar that 6d4cd041f0af triggered a latent bug in the DTS.
> 
> So what should I fix in my device tree?

In the board DTS I used to work on, I had this:

&eth0 {
	phy-connection-type = "rgmii-id";
	phy-handle = <&eth0_phy>;
	#address-cells = <1>;
	#size-cells = <0>;

	/* Atheros AR8035 */
	eth0_phy: ethernet-phy@4 {
		compatible = "ethernet-phy-id004d.d072",
			     "ethernet-phy-ieee802.3-c22";
		interrupts = <37 IRQ_TYPE_EDGE_RISING>;
		reg = <4>;
	};
};

In your DTS, you #include "imx8qm.dtsi"
I found no such file:
$ git ls-files | grep imx8qm
drivers/pinctrl/freescale/pinctrl-imx8qm.c
include/dt-bindings/pinctrl/pads-imx8qm.h

In your patch:
https://patchwork.kernel.org/patch/11211567/

+&fec1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_fec1>;
+	phy-mode = "rgmii-txid";
+	phy-handle = <&ethphy0>;
+	fsl,magic-packet;
+	fsl,rgmii_rxc_dly;
+	status = "okay";
+
+	mdio {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ethphy0: ethernet-phy@0 {
+			compatible = "ethernet-phy-ieee802.3-c22";
+			reg = <4>;
+			at803x,eee-disabled;
+			at803x,vddio-1p8v;
+		};
+	};
+};

Try all possible 'phy-mode' (rgmii, rgmii-id, rgmii-rxid, rgmii-txid)
Investigate 'fsl,rgmii_rxc_dly' (it's not a standard Linux DT prop)
Documentation/devicetree/bindings/net/ethernet-controller.yaml

Regards.

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Re: [PATCH] arm64: defconfig: Change CONFIG_AT803X_PHY from m to y

[Oliver Graute]

On 28/11/19, Marc Gonzalez wrote:
> On 27/11/2019 13:46, Oliver Graute wrote:
> 
> > On 27/11/19, Marc Gonzalez wrote:
> >
> >> On 26/11/2019 15:54, Oliver Graute wrote:
> >>
> >>> this patch broke my imx8qm nfs setup. With the generic phy driver my
> >>> board is booting fine. But with the AT803X_PHY=y enabled  I'm running
> >>> into the following phy issue. So on my side it looks inverse as on
> >>> yours. What is the best proposal to fix this?
> >>>
> >>> [    5.550442] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> >>> [    5.573206] Sending DHCP requests ...... timed out!
> >>> [   95.339702] IP-Config: Retrying forever (NFS root)...
> >>> [   95.348873] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
> >>> [   99.438443] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> >>> [   99.461206] Sending DHCP requests ...... timed out!
> >>
> >> Which DTS are you using?
> > 
> > I'am using this DTS which I'am currently working on:
> > 
> > https://lists.infradead.org/pipermail/linux-arm-kernel/2019-October/689501.html
> >>
> >> I bet one dollar that 6d4cd041f0af triggered a latent bug in the DTS.
> > 
> > So what should I fix in my device tree?
> 
> In the board DTS I used to work on, I had this:
> 
> &eth0 {
> 	phy-connection-type = "rgmii-id";
> 	phy-handle = <&eth0_phy>;
> 	#address-cells = <1>;
> 	#size-cells = <0>;
> 
> 	/* Atheros AR8035 */
> 	eth0_phy: ethernet-phy@4 {
> 		compatible = "ethernet-phy-id004d.d072",
> 			     "ethernet-phy-ieee802.3-c22";
> 		interrupts = <37 IRQ_TYPE_EDGE_RISING>;
> 		reg = <4>;
> 	};
> };
> 
> In your DTS, you #include "imx8qm.dtsi"
> I found no such file:
> $ git ls-files | grep imx8qm

yes this file is not yet added to Shawn Guos next tree.
Latest patch can be found here:

 https://patchwork.kernel.org/patch/11248331/

> 
> In your patch:
> https://patchwork.kernel.org/patch/11211567/
> 
> +&fec1 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_fec1>;
> +	phy-mode = "rgmii-txid";
> +	phy-handle = <&ethphy0>;
> +	fsl,magic-packet;
> +	fsl,rgmii_rxc_dly;
> +	status = "okay";
> +
> +	mdio {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		ethphy0: ethernet-phy@0 {
> +			compatible = "ethernet-phy-ieee802.3-c22";
> +			reg = <4>;
> +			at803x,eee-disabled;
> +			at803x,vddio-1p8v;
> +		};
> +	};
> +};
> 
> Try all possible 'phy-mode' (rgmii, rgmii-id, rgmii-rxid, rgmii-txid)
> Investigate 'fsl,rgmii_rxc_dly' (it's not a standard Linux DT prop)
> Documentation/devicetree/bindings/net/ethernet-controller.yaml

thx for this hint.

Best regards,

Oliver

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Re: [PATCH] arm64: defconfig: Change CONFIG_AT803X_PHY from m to y

[Shawn Guo]

On Tue, Nov 26, 2019 at 03:54:50PM +0100, Oliver Graute wrote:
> On 04/11/19, Peng Fan wrote:
> > From: Peng Fan <peng.fan@nxp.com>
> > 
> > With phy-reset-gpios are enabled for i.MX8MM-EVK board, phy
> > will be reset. Without CONFIG_AT803X_PHY as y, board will stop
> > booting in NFS DHCP, because phy is not ready. So mark
> > CONFIG_AT803X_PHY from m to y to make board boot when using nfs rootfs.
> > 
> > Signed-off-by: Peng Fan <peng.fan@nxp.com>
> > ---
> >  arch/arm64/configs/defconfig | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
> > index c9a867ac32d4..cd778c9ea8a4 100644
> > --- a/arch/arm64/configs/defconfig
> > +++ b/arch/arm64/configs/defconfig
> > @@ -285,7 +285,7 @@ CONFIG_SNI_AVE=y
> >  CONFIG_SNI_NETSEC=y
> >  CONFIG_STMMAC_ETH=m
> >  CONFIG_MDIO_BUS_MUX_MMIOREG=y
> > -CONFIG_AT803X_PHY=m
> > +CONFIG_AT803X_PHY=y
> >  CONFIG_MARVELL_PHY=m
> >  CONFIG_MARVELL_10G_PHY=m
> >  CONFIG_MESON_GXL_PHY=m
> > -- 
> > 2.16.4
> 
> Hello Peng,
> 
> this patch broke my imx8qm nfs setup. With the generic phy driver my
> board is booting fine. But with the AT803X_PHY=y enabled  I'am running
> into the following phy issue. So on my side it looks inverse as on
> yours. What is the best proposal to fix this?

So you are saying your Atheros 8035 device works with generic phy
driver but not with AT803X_PHY driver?  That makes no sense.  Did you
add phy-reset-gpios property for your device?

Shawn

> 
> [    5.550442] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> [    5.573206] Sending DHCP requests ...... timed out!
> [   95.339702] IP-Config: Retrying forever (NFS root)...
> [   95.348873] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
> [   99.438443] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> [   99.461206] Sending DHCP requests ...... timed out!
> [  174.419639] IP-Config: Retrying forever (NFS root)...
> [  174.428834] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
> [  178.542418] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> [  178.565206] Sending DHCP requests .....
> [  209.261271] random: crng init done
> [  230.565202] . timed out!
> [  260.577340] IP-Config: Retrying forever (NFS root)...
> [  260.586497] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
> [  264.686438] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> [  264.709206] Sending DHCP requests ...... timed out!
> [  339.259701] IP-Config: Retrying forever (NFS root)...
> [  339.268835] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
> [  343.374422] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> [  343.405206] Sending DHCP requests ...... timed out!
> [  433.171676] IP-Config: Retrying forever (NFS root)...
> [  433.180842] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
> [  437.294439] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> [  437.317206] Sending DHCP requests ...... timed out!
> [  509.003660] IP-Config: Retrying forever (NFS root)...
> [  509.012836] Atheros 8035 ethernet 5b040000.ethernet-1:06: attached PHY driver [Atheros 8035 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:06, irq=POLL)
> [  513.102416] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
> 
> Best Regards,
> 
> Oliver

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