From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3C29EC3A5A6 for ; Sun, 22 Sep 2019 19:09:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 12AF9206C2 for ; Sun, 22 Sep 2019 19:09:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569179396; bh=O45hS1XFtek78qi/yy2DUdGSAsD3n7PiKl6lfkTw7f8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=vPYMGL9cYW5vRIsyLF744ZPqcHItopNN98JcfOD/V4ZAaC1tlxUqRxkCIQ/pev+Qa AOeIlU9Xkz9EKeeNbKDT9SYpYK+UNfqnp/aHz6PamSmnVdtg12KuO1va6WS6N6/MrW f/SEQ6Fq10KuV+SxYqHpHZHT5/4NzDhoN3md1aHE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730505AbfIVTJy (ORCPT ); Sun, 22 Sep 2019 15:09:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:33932 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2394979AbfIVS7B (ORCPT ); Sun, 22 Sep 2019 14:59:01 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 04A7C2190F; Sun, 22 Sep 2019 18:58:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569178741; bh=O45hS1XFtek78qi/yy2DUdGSAsD3n7PiKl6lfkTw7f8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MGd22Cr6bZQ73OO9V1oPXyFvK7mriGl4OC6MQ071igkN97ZdA4vRRMAzWzLMIipYm 6DYmHeE2R66CK55W7KZyxUpy9tM6d1K239hiQIpPMCcLre6QqkQ4N4pQWxoT9j3rNv RiEnO7EQeqWto1n1tVfJ6d1zckuiisNxZoTMq9fg= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Marek Szyprowski , Krzysztof Kozlowski , Sasha Levin , devicetree@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 67/89] ARM: dts: exynos: Mark LDO10 as always-on on Peach Pit/Pi Chromebooks Date: Sun, 22 Sep 2019 14:56:55 -0400 Message-Id: <20190922185717.3412-67-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190922185717.3412-1-sashal@kernel.org> References: <20190922185717.3412-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Marek Szyprowski [ Upstream commit 5b0eeeaa37615df37a9a30929b73e9defe61ca84 ] Commit aff138bf8e37 ("ARM: dts: exynos: Add TMU nodes regulator supply for Peach boards") assigned LDO10 to Exynos Thermal Measurement Unit, but it turned out that it supplies also some other critical parts and board freezes/crashes when it is turned off. The mentioned commit made Exynos TMU a consumer of that regulator and in typical case Exynos TMU driver keeps it enabled from early boot. However there are such configurations (example is multi_v7_defconfig), in which some of the regulators are compiled as modules and are not available from early boot. In such case it may happen that LDO10 is turned off by regulator core, because it has no consumers yet (in this case consumer drivers cannot get it, because the supply regulators for it are not yet available). This in turn causes the board to crash. This patch restores 'always-on' property for the LDO10 regulator. Fixes: aff138bf8e37 ("ARM: dts: exynos: Add TMU nodes regulator supply for Peach boards") Signed-off-by: Marek Szyprowski Signed-off-by: Krzysztof Kozlowski Signed-off-by: Sasha Levin --- arch/arm/boot/dts/exynos5420-peach-pit.dts | 1 + arch/arm/boot/dts/exynos5800-peach-pi.dts | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts index c91eff8475a87..7ccee2cfe4812 100644 --- a/arch/arm/boot/dts/exynos5420-peach-pit.dts +++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts @@ -426,6 +426,7 @@ regulator-name = "vdd_ldo10"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; + regulator-always-on; regulator-state-mem { regulator-off-in-suspend; }; diff --git a/arch/arm/boot/dts/exynos5800-peach-pi.dts b/arch/arm/boot/dts/exynos5800-peach-pi.dts index daad5d425cf5c..0900b38f60b4f 100644 --- a/arch/arm/boot/dts/exynos5800-peach-pi.dts +++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts @@ -426,6 +426,7 @@ regulator-name = "vdd_ldo10"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; + regulator-always-on; regulator-state-mem { regulator-off-in-suspend; }; -- 2.20.1