diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2016-06-04 12:58:39 +0200 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2016-08-17 12:58:31 -0400 |
| commit | 2fc0cdf6e9a858c5bf3a1f23a7b673fbf9a3abf4 (patch) | |
| tree | 57c66f4604a6bf5a8563fd490a3e0566774d7184 /arch/arm/boot/dts | |
| parent | e19f0ec5aeb659cb7dd2bf6e4f1e842f5ad71fcf (diff) | |
ARM: dts: sunxi: Add a startup delay for fixed regulator enabled phys
[ Upstream commit fc51b632c7b047c25807023b76f3877aed19c770 ]
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>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Diffstat (limited to 'arch/arm/boot/dts')
| -rw-r--r-- | arch/arm/boot/dts/sun4i-a10-a1000.dts | 1 | ||||
| -rw-r--r-- | arch/arm/boot/dts/sun4i-a10-hackberry.dts | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/sun4i-a10-a1000.dts b/arch/arm/boot/dts/sun4i-a10-a1000.dts index b67e5be618cf..28b6b0e46e63 100644 --- a/arch/arm/boot/dts/sun4i-a10-a1000.dts +++ b/arch/arm/boot/dts/sun4i-a10-a1000.dts @@ -178,6 +178,7 @@ 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 d3f73ea25567..864acaa00c9e 100644 --- a/arch/arm/boot/dts/sun4i-a10-hackberry.dts +++ b/arch/arm/boot/dts/sun4i-a10-hackberry.dts @@ -159,6 +159,7 @@ 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>; }; |