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board: colibri-imx6ull: fix detecting ethernet phy

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Now that it is possible to use regulator-fixed-clock make use
of it. This makes U-Boot detect the PHY on first cold-boot.

This commit also adjusts the code in setup_fec and follows
how it is done in mx6ullevk.c

This commit also slows down the boot-process by about 150ms
as it now waits for the regulator-fixed-clock voltage that
drives the PHY to go up.
If you rely on very fast boot-speeds and don't need ethernet
for your boot-process you can safely revert the changes on
imx6ull-colibri.dtsi

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
This commit is contained in:
Philippe Schenker
2022-04-08 10:07:11 +02:00
committed by Stefano Babic
parent f3b5100aff
commit aa6f57d877
2 changed files with 21 additions and 15 deletions
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13
arch/arm/dts/imx6ull-colibri.dtsi
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@@ -64,6 +64,18 @@
gpio = <&gpio1 2 GPIO_ACTIVE_LOW>; /* USBH_PEN */
vin-supply = <&reg_5v0>;
};
reg_eth_phy: regulator-eth-phy {
compatible = "regulator-fixed-clock";
regulator-boot-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-name = "eth_phy";
regulator-type = "voltage";
vin-supply = <&reg_module_3v3>;
clocks = <&clks IMX6UL_CLK_ENET2_REF_125M>;
startup-delay-us = <150000>;
};
};
&adc1 {
@@ -84,6 +96,7 @@
pinctrl-0 = <&pinctrl_enet2>;
phy-mode = "rmii";
phy-handle = <&ethphy1>;
phy-supply = <&reg_eth_phy>;
status = "okay";
mdio {