From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: N900: fixing MMC at boot Date: Sat, 6 Dec 2014 18:35:27 +0100 Message-ID: <20141206173526.GA7964@amd> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:52270 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751124AbaLFRf3 (ORCPT ); Sat, 6 Dec 2014 12:35:29 -0500 Content-Disposition: inline Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: pali.rohar@gmail.com, sre@debian.org, sre@ring0.de, kernel list , linux-arm-kernel , linux-omap@vger.kernel.org, tony@atomide.com, khilman@kernel.org, aaro.koskinen@iki.fi, freemangordon@abv.bg Hi! For a long time, MMC was not working during boot... (making the box unusable without nfsroot). It seems problem is in the regulators, because with diff below, I was able to mount root on SD card for a first time ... in a long time. Signed-off-by: Pavel Machek [but not for upstream] diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt index 8607433..07791c6 100644 --- a/Documentation/devicetree/bindings/regulator/regulator.txt +++ b/Documentation/devicetree/bindings/regulator/regulator.txt @@ -4,7 +4,8 @@ Optional properties: - regulator-name: A string used as a descriptive name for regulator outputs - regulator-min-microvolt: smallest voltage consumers may set - regulator-max-microvolt: largest voltage consumers may set -- regulator-microvolt-offset: Offset applied to voltages to compensate for voltage drops +- regulator-microvolt-offset: Offset applied to voltages to compensate for + voltage drops - regulator-min-microamp: smallest current consumers may set - regulator-max-microamp: largest current consumers may set - regulator-always-on: boolean, regulator should never be disabled diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts index 11d8afd..707928d 100644 --- a/arch/arm/boot/dts/omap3-n900.dts +++ b/arch/arm/boot/dts/omap3-n900.dts @@ -287,31 +287,35 @@ regulator-name = "V28"; regulator-min-microvolt = <2800000>; regulator-max-microvolt = <2800000>; - regulator-always-on; /* due battery cover sensor */ + regulator-always-on; /* due to battery cover sensor */ }; &vaux2 { regulator-name = "VCSI"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; + regulator-always-on; /* FIXME */ }; &vaux3 { regulator-name = "VMMC2_30"; regulator-min-microvolt = <2800000>; regulator-max-microvolt = <3000000>; + regulator-always-on; /* FIXME */ }; &vaux4 { regulator-name = "VCAM_ANA_28"; regulator-min-microvolt = <2800000>; regulator-max-microvolt = <2800000>; + regulator-always-on; /* FIXME */ }; &vmmc1 { regulator-name = "VMMC1"; regulator-min-microvolt = <1850000>; regulator-max-microvolt = <3150000>; + regulator-always-on; /* FIXME */ }; &vmmc2 { @@ -339,13 +343,14 @@ regulator-name = "VMMC2_IO_18"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; + regulator-always-on; /* FIXME */ }; &vio { regulator-name = "VIO"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; - + regulator-always-on; /* FIXME */ }; &vintana1 { -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html