AW: [PATCH v3] arm64: dts: freescale: imx93-phycore-som: Delay the phy reset by a gpio
From: Christoph Stoidner <hidden>
Date: 2025-05-24 21:37:21
Also in:
imx, linux-devicetree, lkml
From: Christoph Stoidner <hidden>
Date: 2025-05-24 21:37:21
Also in:
imx, linux-devicetree, lkml
Hi Andrew,
On Di, 2025-05-24 at 19:44 -0300, Andrew Lunn wrote:quoted
diff --git a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi index 88c2657b50e6..b481097f08a4 100644 --- a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi@@ -68,6 +68,8 @@ mdio: mdio { ethphy1: ethernet-phy@1 { compatible = "ethernet-phy-ieee802.3-c22"; reg = <1>; + reset-gpios = <&gpio4 23 GPIO_ACTIVE_HIGH>; + reset-assert-us = <30>;Is there anything in the datasheet about needing a delay after the reset? There is a DT property for this: reset-deassert-us: description: Delay after the reset was deasserted in microseconds. If this property is missing the delay will be skipped.
No, there is no need for a delay after the reset mentioned in the datasheet. There is only the delay after the assert (i.E. the pulse width), that I declared with the property reset-assert-us.
Anyway: Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Thanks, and regards, Christoph
Andrew