From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:47521 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932088AbcGLAQY (ORCPT ); Mon, 11 Jul 2016 20:16:24 -0400 Subject: Patch "ARM: dts: sun6i: yones-toptech-bs1078-v2: Drop constraints on dc1sw regulator" has been added to the 4.6-stable tree To: wens@csie.org, gregkh@linuxfoundation.org, hdegoede@redhat.com, maxime.ripard@free-electrons.com, olof@lixom.net Cc: , From: Date: Mon, 11 Jul 2016 16:39:08 -0700 Message-ID: <1468280348193149@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled ARM: dts: sun6i: yones-toptech-bs1078-v2: Drop constraints on dc1sw regulator to the 4.6-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm-dts-sun6i-yones-toptech-bs1078-v2-drop-constraints-on-dc1sw-regulator.patch and it can be found in the queue-4.6 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From b223d6242c372a81cca3bb81998f53d3b3e3fb70 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Wed, 11 May 2016 13:23:14 +0800 Subject: ARM: dts: sun6i: yones-toptech-bs1078-v2: Drop constraints on dc1sw regulator From: Chen-Yu Tsai commit b223d6242c372a81cca3bb81998f53d3b3e3fb70 upstream. This is the same issue fixed in commit dcf5341f0150 ("ARM: dts: sun8i-q8-common: Do not set constraints on dc1sw regulator"). Commit message copied: dc1sw is an on/off only regulator and as such it cannot have constraints. This is a limitation of the kernel regulator implementation which resolves supplies on the first regulator_get(), which is done after applying constraints, and applying the constrains will fail because it calls _regulator_get_voltage() and _regulator_do_set_voltage() both of which will fail on a switch regulator when there is no supply (yet). This causes registering of all axp22x regulators to fail with the following errors: [ 1.395249] vcc-lcd: failed to get the current voltage(-22) [ 1.405131] axp20x-regulator axp20x-regulator: Failed to register dc1sw [ 1.412436] axp20x-regulator: probe of axp20x-regulator failed with error -22 This commit removes the constrains on dc1sw / vcc-lcd fixing this problem. Note that dcdc1 itself is contrained to the exact same values, so this does not change anything. Cc: Hans de Goede Signed-off-by: Chen-Yu Tsai Acked-by: Maxime Ripard Signed-off-by: Olof Johansson Signed-off-by: Greg Kroah-Hartman --- arch/arm/boot/dts/sun6i-a31s-yones-toptech-bs1078-v2.dts | 2 -- 1 file changed, 2 deletions(-) --- a/arch/arm/boot/dts/sun6i-a31s-yones-toptech-bs1078-v2.dts +++ b/arch/arm/boot/dts/sun6i-a31s-yones-toptech-bs1078-v2.dts @@ -135,8 +135,6 @@ ®_dc1sw { regulator-name = "vcc-lcd-usb2"; - regulator-min-microvolt = <3000000>; - regulator-max-microvolt = <3000000>; }; ®_dc5ldo { Patches currently in stable-queue which might be from wens@csie.org are queue-4.6/arm-dts-sun6i-primo81-drop-constraints-on-dc1sw-regulator.patch queue-4.6/arm-dts-sun6i-yones-toptech-bs1078-v2-drop-constraints-on-dc1sw-regulator.patch