From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans de Goede Subject: [PATCH] ARM: dts: sunxi: Add a startup delay for fixed regulator enabled phys Date: Fri, 3 Jun 2016 22:00:24 +0200 Message-ID: <1464984024-22669-1-git-send-email-hdegoede@redhat.com> Return-path: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Chen-Yu Tsai , Maxime Ripard Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, devicetree , Hans de Goede List-Id: devicetree@vger.kernel.org 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 --- arch/arm/boot/dts/sun4i-a10-a1000.dts | 1 + arch/arm/boot/dts/sun4i-a10-hackberry.dts | 1 + arch/arm/boot/dts/sun4i-a10-jesurun-q5.dts | 1 + arch/arm/boot/dts/sun5i-a10s-wobo-i5.dts | 1 + 4 files changed, 4 insertions(+) diff --git a/arch/arm/boot/dts/sun4i-a10-a1000.dts b/arch/arm/boot/dts/sun4i-a10-a1000.dts index c92a1ae..fa70b8f 100644 --- 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 --- 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 --- 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 --- 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>; }; -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html