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[209.132.180.67]) by mx.google.com with ESMTP id l22si1997845edb.241.2019.10.03.09.58.46; Thu, 03 Oct 2019 09:58:46 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=dlkQGSMJ; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392609AbfJCQsK (ORCPT + 27 others); Thu, 3 Oct 2019 12:48:10 -0400 Received: from mail.kernel.org ([198.145.29.99]:33696 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730393AbfJCQsH (ORCPT ); Thu, 3 Oct 2019 12:48:07 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CC52621848; Thu, 3 Oct 2019 16:48:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570121286; bh=3iuTUPH38z8GhXhGf0ZoFLJizgr0/Dx+jX0EiSbp/nM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dlkQGSMJvndGXc5UdImLxdlUTpY3bnuDGfS0taioldSVrd3OuupvH3oKiqWCDcECI iDRma8MhvsGukVWK+rw1sElUrmRSMd4qbih1ceFFG7IMccDRMPOcTXYfcKZHKAgpQc 3UAAKqAcfs4BBaDor2b0KoHc5ANw64NQE1/b/YYI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Marek Szyprowski , Krzysztof Kozlowski , Sasha Levin Subject: [PATCH 5.3 187/344] ARM: dts: exynos: Mark LDO10 as always-on on Peach Pit/Pi Chromebooks Date: Thu, 3 Oct 2019 17:52:32 +0200 Message-Id: <20191003154558.657691404@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191003154540.062170222@linuxfoundation.org> References: <20191003154540.062170222@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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(+) -- 2.20.1 diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts index f78db6809cca4..9eb48cabcca45 100644 --- a/arch/arm/boot/dts/exynos5420-peach-pit.dts +++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts @@ -440,6 +440,7 @@ 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 e0f470fe54c81..4398f2d1fe881 100644 --- a/arch/arm/boot/dts/exynos5800-peach-pi.dts +++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts @@ -440,6 +440,7 @@ regulator-name = "vdd_ldo10"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; + regulator-always-on; regulator-state-mem { regulator-off-in-suspend; };