| Message ID | 20210423141513.56592-3-sebastian.reichel@collabora.com |
|---|---|
| State | Accepted |
| Commit | 4ac026a937993230ce22782d20c3c92441a115b9 |
| Delegated to: | Stefano Babic |
| Headers | show |
| Series | GE Board fixes and cleanups | expand |
> Add PHY's reset GPIO, so that U-Boot does a PHY hard reset. > This is needed, since the PHY might become unresponsive if > watchdog reboots the system while a transaction is ongoing. > The reset GPIO is added to the U-Boot specific DT files, since > the kernel does not setup the reserved registers correctly after > resetting the PHY and thus must not reset it. > Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com> Applied to u-boot-imx, master, thanks ! Best regards, Stefano Babic
diff --git a/arch/arm/dts/imx6q-bx50v3-uboot.dtsi b/arch/arm/dts/imx6q-bx50v3-uboot.dtsi index 2de3b850ec8a..b54e8e6ada74 100644 --- a/arch/arm/dts/imx6q-bx50v3-uboot.dtsi +++ b/arch/arm/dts/imx6q-bx50v3-uboot.dtsi @@ -35,3 +35,15 @@ }; }; }; + +/* + * This is not done in imx6q-ba16.dtsi, since that file is shared + * with the kernel and the kernel should not reset the PHY, since + * it lacks support for configuring the reserved registeres to + * avoid a board specific voltage peak issue. + */ +&fec { + phy-reset-gpios = <&gpio1 28 GPIO_ACTIVE_LOW>; + phy-reset-duration = <1>; + phy-reset-post-delay = <0>; +};
Add PHY's reset GPIO, so that U-Boot does a PHY hard reset. This is needed, since the PHY might become unresponsive if watchdog reboots the system while a transaction is ongoing. The reset GPIO is added to the U-Boot specific DT files, since the kernel does not setup the reserved registers correctly after resetting the PHY and thus must not reset it. Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com> --- arch/arm/dts/imx6q-bx50v3-uboot.dtsi | 12 ++++++++++++ 1 file changed, 12 insertions(+)