[PATCH net-next v2 06/10] arm64: dts: allwinner: a527: cubie-a5e: Add ethernet PHY reset setting
Russell King (Oracle)
linux at armlinux.org.uk
Wed Aug 13 08:12:40 PDT 2025
On Wed, Aug 13, 2025 at 10:55:36PM +0800, Chen-Yu Tsai wrote:
> diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a527-cubie-a5e.dts b/arch/arm64/boot/dts/allwinner/sun55i-a527-cubie-a5e.dts
> index 70d439bc845c..d4cee2222104 100644
> --- a/arch/arm64/boot/dts/allwinner/sun55i-a527-cubie-a5e.dts
> +++ b/arch/arm64/boot/dts/allwinner/sun55i-a527-cubie-a5e.dts
> @@ -94,6 +94,9 @@ &mdio0 {
> ext_rgmii_phy: ethernet-phy at 1 {
> compatible = "ethernet-phy-ieee802.3-c22";
> reg = <1>;
> + reset-gpios = <&pio 7 8 GPIO_ACTIVE_LOW>; /* PH8 */
> + reset-assert-us = <10000>;
> + reset-deassert-us = <150000>;
Please verify that kexec works with this, as if the calling kernel
places the PHY in reset and then kexec's, and the reset remains
asserted, the PHY will not be detected.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
More information about the linux-arm-kernel
mailing list