Re: [PATCH net-next v2 06/10] arm64: dts: allwinner: a527: cubie-a5e: Add ethernet PHY reset setting
From: "Russell King (Oracle)" <linux@armlinux.org.uk>
Date: 2025-08-13 15:12:56
Also in:
linux-arm-kernel, linux-devicetree, linux-sunxi, lkml
On Wed, Aug 13, 2025 at 10:55:36PM +0800, Chen-Yu Tsai wrote:
quoted hunk ↗ jump to hunk
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@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!