Control: tag -1 patch On Wed, Nov 05, 2014 at 09:52:40PM +0100, Karsten Merker wrote:
> [Failing ethernet PHY detection in d-i on the BananaPi] > Further experiments show that increasing the "startup-delay-us" > value in the regulator definition seems to solve the issue. I'll > do some further experiments to determine a value that is long > enough for a reliable detection without being unnecessary long > and discuss the issue with the upstream author. A patch to solve the issue has been accepted upstream (see https://lists.infradead.org/pipermail/linux-arm-kernel/2014-November/301727.html). Attached is a backport of this patch for inclusion into the upcoming linux 3.16.7-3 package. Regards, Karsten -- Gem. Par. 28 Abs. 4 Bundesdatenschutzgesetz widerspreche ich der Nutzung sowie der Weitergabe meiner personenbezogenen Daten für Zwecke der Werbung sowie der Markt- oder Meinungsforschung.
Index: debian/patches/features/arm/dts-sunxi-Banana-Pi-increase-startup-delay-for-the-GMAC-PHY-regulator.patch =================================================================== --- debian/patches/features/arm/dts-sunxi-Banana-Pi-increase-startup-delay-for-the-GMAC-PHY-regulator.patch (Revision 0) +++ debian/patches/features/arm/dts-sunxi-Banana-Pi-increase-startup-delay-for-the-GMAC-PHY-regulator.patch (Arbeitskopie) @@ -0,0 +1,35 @@ +From f82f99afaa65fd28d0f8409c50e8fcc65ee5e15b Mon Sep 17 00:00:00 2001 +From: Karsten Merker <mer...@debian.org> +Date: Wed, 12 Nov 2014 00:01:46 +0100 +Subject: ARM: dts: sunxi: Banana Pi: increase startup-delay for the GMAC PHY regulator +Origin: https://git.kernel.org/cgit/linux/kernel/git/mripard/linux.git/commit/?h=sunxi/dt-for-3.19&id=f82f99afaa65fd28d0f8409c50e8fcc65ee5e15b + +On the LeMaker Banana Pi, probing the external ethernet PHY connected +to the SoC's internal GMAC module sometimes fails. The PHY power +supply is handled via a GPIO-controlled regulator, and the existing +regulator startup-delay of 50000us is too short to make sure that the +PHY is always fully powered up when it is queried by phylib. Tests +have shown that to provide a reliable PHY detection, the startup-delay +has to be increased to at least 60000us. To have a certain safety margin +and to cater for manufacturing variations between different boards, +the delay gets set to 100000us as discussed on the linux-arm-kernel +mailinglist. + +Signed-off-by: Karsten Merker <mer...@debian.org> +Acked-by: Hans de Goede <hdego...@redhat.com> +Signed-off-by: Maxime Ripard <maxime.rip...@free-electrons.com> + +diff --git a/arch/arm/boot/dts/sun7i-a20-bananapi.dts b/arch/arm/boot/dts/sun7i-a20-bananapi.dts +index 3de847d..1cf1214 100644 +--- a/arch/arm/boot/dts/sun7i-a20-bananapi.dts ++++ b/arch/arm/boot/dts/sun7i-a20-bananapi.dts +@@ -207,7 +207,7 @@ + regulator-name = "gmac-3v3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; +- startup-delay-us = <50000>; ++ startup-delay-us = <100000>; + enable-active-high; + gpio = <&pio 7 23 0>; + }; + Index: debian/patches/series =================================================================== --- debian/patches/series (Revision 22061) +++ debian/patches/series (Arbeitskopie) @@ -113,6 +113,7 @@ features/arm/dts-sun7i-Add-spi0_pins_a-pinctrl-setting.patch features/arm/dts-sun7i-Add-uart3_pins_b-pinctrl-setting.patch features/arm/dts-sun7i-Add-Banana-Pi-board.patch +features/arm/dts-sunxi-Banana-Pi-increase-startup-delay-for-the-GMAC-PHY-regulator.patch features/arm/dts-sun7i-Add-support-for-Olimex-A20-OLinuXino-LIME.patch features/arm64/drivers-net-Add-APM-X-Gene-SoC-ethernet-driver-suppo.patch features/arm64/drivers-net-NET_XGENE-should-depend-on-HAS_DMA.patch
