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ARM: dts: sunxi: Add a startup delay for fixed regulator enabled phys

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commit fc51b632c7b047c25807023b76f3877aed19c770 upstream.

It seems that recent kernels have a shorter timeout when scanning for
ethernet phys causing us to hit a timeout on boards where the phy's
regulator gets enabled just before scanning, which leads to non working
ethernet.

A 10ms startup delay seems to be enough to fix it, this commit adds a
20ms startup delay just to be safe.

This has been tested on a sun4i-a10-a1000 and sun5i-a10s-wobo-i5 board,
both of which have non-working ethernet on recent kernels without this
fix.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hans de Goede 2016-06-04 12:58:39 +02:00 committed by Greg Kroah-Hartman
parent 53eaa3910a
commit 225ecdbca3
4 changed files with 4 additions and 0 deletions
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1
arch/arm/boot/dts/sun4i-a10-a1000.dts
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@ -84,6 +84,7 @@
regulator-name = "emac-3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
startup-delay-us = <20000>;
enable-active-high;
gpio = <&pio 7 15 GPIO_ACTIVE_HIGH>;
};

1
arch/arm/boot/dts/sun4i-a10-hackberry.dts
View File

@ -66,6 +66,7 @@
regulator-name = "emac-3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
startup-delay-us = <20000>;
enable-active-high;
gpio = <&pio 7 19 GPIO_ACTIVE_HIGH>;
};

1
arch/arm/boot/dts/sun4i-a10-jesurun-q5.dts
View File

@ -80,6 +80,7 @@
regulator-name = "emac-3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
startup-delay-us = <20000>;
enable-active-high;
gpio = <&pio 7 19 GPIO_ACTIVE_HIGH>; /* PH19 */
};

1
arch/arm/boot/dts/sun5i-a10s-wobo-i5.dts
View File

@ -79,6 +79,7 @@
regulator-name = "emac-3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
startup-delay-us = <20000>;
enable-active-high;
gpio = <&pio 0 2 GPIO_ACTIVE_HIGH>;
};