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

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.

Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

diff --git a/arch/arm/boot/dts/sun4i-a10-a1000.dts b/arch/arm/boot/dts/sun4i-a10-a1000.dts
index c92a1ae..fa70b8f 100644 (file)
--- a/arch/arm/boot/dts/sun4i-a10-a1000.dts
+++ b/arch/arm/boot/dts/sun4i-a10-a1000.dts
@@ -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>;
        };

diff --git a/arch/arm/boot/dts/sun4i-a10-hackberry.dts b/arch/arm/boot/dts/sun4i-a10-hackberry.dts
index 2b17c51..6de83a6 100644 (file)
--- a/arch/arm/boot/dts/sun4i-a10-hackberry.dts
+++ b/arch/arm/boot/dts/sun4i-a10-hackberry.dts
@@ -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>;
        };

diff --git a/arch/arm/boot/dts/sun4i-a10-jesurun-q5.dts b/arch/arm/boot/dts/sun4i-a10-jesurun-q5.dts
index 7afc7a6..e28f080 100644 (file)
--- a/arch/arm/boot/dts/sun4i-a10-jesurun-q5.dts
+++ b/arch/arm/boot/dts/sun4i-a10-jesurun-q5.dts
@@ -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 */
        };

diff --git a/arch/arm/boot/dts/sun5i-a10s-wobo-i5.dts b/arch/arm/boot/dts/sun5i-a10s-wobo-i5.dts
index 52d18ca..b5de75f 100644 (file)
--- a/arch/arm/boot/dts/sun5i-a10s-wobo-i5.dts
+++ b/arch/arm/boot/dts/sun5i-a10s-wobo-i5.dts
@@ -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>;
        };