imx8mm-evk has a GPIO connected to AR8031 Ethernet PHY's reset pin.
Describe it in the device tree, following phy's datasheet reset duration of 10ms.
Tested booting via NFS.
Signed-off-by: Alifer Moraes <[email protected]>
---
Originally sent by Peng Fan <[email protected]>
Back then CONFIG_AT803X_PHY was set as "m" in defconfig so the boot process hung
at nfs boot, now that CONFIG_AT803X_PHY is set as "y" by default, the patch works
correctly.
Peng's original patch missed to pass the phy-reset-duration, according to the AR8031
datasheet the reset GPIO needs to stay low for 10ms.
Original thread: https://lkml.org/lkml/2019/10/21/347
arch/arm64/boot/dts/freescale/imx8mm-evk.dts | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
index 28ab17a277bb..11903ca86f0e 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
@@ -82,6 +82,8 @@
pinctrl-0 = <&pinctrl_fec1>;
phy-mode = "rgmii-id";
phy-handle = <ðphy0>;
+ phy-reset-gpios = <&gpio4 22 GPIO_ACTIVE_LOW>;
+ phy-reset-duration = <10>;
fsl,magic-packet;
status = "okay";
--
2.17.1
imx8mq-evk has a GPIO connected to AR8031 Ethernet PHY's reset pin.
Describe it in the device tree, following phy's datasheet reset duration of 10ms.
Tested booting via NFS.
Signed-off-by: Alifer Moraes <[email protected]>
---
arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
index c36685916683..a49e2bf8afe5 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
@@ -110,6 +110,8 @@
pinctrl-0 = <&pinctrl_fec1>;
phy-mode = "rgmii-id";
phy-handle = <ðphy0>;
+ phy-reset-gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
+ phy-reset-duration = <10>;
fsl,magic-packet;
status = "okay";
--
2.17.1
Hi,
On 20-02-14 16:27, Alifer Moraes wrote:
> imx8mm-evk has a GPIO connected to AR8031 Ethernet PHY's reset pin.
>
> Describe it in the device tree, following phy's datasheet reset duration of 10ms.
>
> Tested booting via NFS.
>
> Signed-off-by: Alifer Moraes <[email protected]>
> ---
>
> Originally sent by Peng Fan <[email protected]>
>
> Back then CONFIG_AT803X_PHY was set as "m" in defconfig so the boot process hung
> at nfs boot, now that CONFIG_AT803X_PHY is set as "y" by default, the patch works
> correctly.
>
> Peng's original patch missed to pass the phy-reset-duration, according to the AR8031
> datasheet the reset GPIO needs to stay low for 10ms.
>
> Original thread: https://lkml.org/lkml/2019/10/21/347
>
> arch/arm64/boot/dts/freescale/imx8mm-evk.dts | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> index 28ab17a277bb..11903ca86f0e 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> @@ -82,6 +82,8 @@
> pinctrl-0 = <&pinctrl_fec1>;
> phy-mode = "rgmii-id";
> phy-handle = <ðphy0>;
> + phy-reset-gpios = <&gpio4 22 GPIO_ACTIVE_LOW>;
Where is this gpio muxed?
Regards,
Marco
> + phy-reset-duration = <10>;
> fsl,magic-packet;
> status = "okay";
>
> --
> 2.17.1
>
>
>
--
Pengutronix e.K. | |
Steuerwalder Str. 21 | http://www.pengutronix.de/ |
31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
Hi Alifer,
On 20-02-14 16:27, Alifer Moraes wrote:
> imx8mq-evk has a GPIO connected to AR8031 Ethernet PHY's reset pin.
>
> Describe it in the device tree, following phy's datasheet reset duration of 10ms.
>
> Tested booting via NFS.
>
> Signed-off-by: Alifer Moraes <[email protected]>
> ---
> arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> index c36685916683..a49e2bf8afe5 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> @@ -110,6 +110,8 @@
> pinctrl-0 = <&pinctrl_fec1>;
> phy-mode = "rgmii-id";
> phy-handle = <ðphy0>;
> + phy-reset-gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
Same here.
Regards,
Marco
> + phy-reset-duration = <10>;
> fsl,magic-packet;
> status = "okay";
>
> --
> 2.17.1
>
>
>
--
Pengutronix e.K. | |
Steuerwalder Str. 21 | http://www.pengutronix.de/ |
31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
Hello,
I forgot to select reply all in this question, so I answered only to Marco.
> Where is this gpio muxed?
>
The gpio is muxed in the subnode pinctrl_fec1.
Regards,
Alifer
On Fri, Feb 14, 2020 at 4:27 PM Alifer Moraes <[email protected]> wrote:
>
> imx8mq-evk has a GPIO connected to AR8031 Ethernet PHY's reset pin.
>
> Describe it in the device tree, following phy's datasheet reset duration of 10ms.
>
> Tested booting via NFS.
>
> Signed-off-by: Alifer Moraes <[email protected]>
Reviewed-by: Fabio Estevam <[email protected]>
On Fri, Feb 14, 2020 at 4:27 PM Alifer Moraes <[email protected]> wrote:
>
> imx8mm-evk has a GPIO connected to AR8031 Ethernet PHY's reset pin.
>
> Describe it in the device tree, following phy's datasheet reset duration of 10ms.
>
> Tested booting via NFS.
>
> Signed-off-by: Alifer Moraes <[email protected]>
Reviewed-by: Fabio Estevam <[email protected]>
On Fri, Feb 14, 2020 at 04:27:49PM -0300, Alifer Moraes wrote:
> imx8mm-evk has a GPIO connected to AR8031 Ethernet PHY's reset pin.
>
> Describe it in the device tree, following phy's datasheet reset duration of 10ms.
>
> Tested booting via NFS.
>
> Signed-off-by: Alifer Moraes <[email protected]>
Applied both, thanks.