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=-13.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 9C3ECC433DF for ; Sat, 8 Aug 2020 23:50:42 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 42E2020672 for ; Sat, 8 Aug 2020 23:50:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="YT0vlG9e"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="gN0DpA5A" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 42E2020672 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=4R2OQfpBNSgrv7ZNRDk0Y2whLF48FwxeNYsWim1SMJ4=; b=YT0vlG9eVRU5LBf9SwHz+aK/5 em2NoEtYrifPEsn03e494x0uWHQYnh0X+g5Ti2w/szlQ1FmCq89jRq16S0OWuHkFTRW0DX835qhAk O5OAEoFaJzNsobjPlI7B5r05JEDdwetxpLB4+G4TZew470KT3zbYSq6S41HVMxcO4VbaIW6lAF6U5 36GhGy3n/pquHEqFi6G6hm2KsI3Bbt3XAkSWmmEbK3Y9NX2BpYYZMDIHxkyrBRd+GOfD2ChR0QT+9 AYM0Lg4R+aLMkfiYHZbgdsVd8yGAHu+HV8p2rNXb+AJa0tMMgvRXvIeqbMPrN0aLLpXoA1VuYuOPu YxLS+6e6A==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k4Ya3-0002RS-VY; Sat, 08 Aug 2020 23:48:52 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k4YQa-0002HN-9v for linux-arm-kernel@lists.infradead.org; Sat, 08 Aug 2020 23:39:05 +0000 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 7616920885; Sat, 8 Aug 2020 23:39:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596929943; bh=lWgkR05ZLdyajB7h9qa3gzGicGf+5etfvA1S5tRgY10=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gN0DpA5A3imi7ihUKgcwsH6vPOS/R1dfzCqIU0UXhweoLsK13yzCvHj6Nw/FXFMce Npt3lIEg6UsAx/24WuooPirjYx32ag3LkIJHK4ZF3x0QaJ7rO8dJPDIu8sGjGbA4ld ctHqRckuFX/ZpGX+GafV2TiovCF9LciWPc94IzTc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 14/40] arm64: dts: exynos: Fix silent hang after boot on Espresso Date: Sat, 8 Aug 2020 19:38:18 -0400 Message-Id: <20200808233844.3618823-14-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200808233844.3618823-1-sashal@kernel.org> References: <20200808233844.3618823-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200808_193904_820218_06A4CF0F X-CRM114-Status: GOOD ( 12.70 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sasha Levin , devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, Krzysztof Kozlowski , Alim Akhtar , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Alim Akhtar [ Upstream commit b072714bfc0e42c984b8fd6e069f3ca17de8137a ] Once regulators are disabled after kernel boot, on Espresso board silent hang observed because of LDO7 being disabled. LDO7 actually provide power to CPU cores and non-cpu blocks circuitries. Keep this regulator always-on to fix this hang. Fixes: 9589f7721e16 ("arm64: dts: Add S2MPS15 PMIC node on exynos7-espresso") Signed-off-by: Alim Akhtar Signed-off-by: Krzysztof Kozlowski Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/exynos/exynos7-espresso.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts index 080e0f56e108f..61ee7b6a31594 100644 --- a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts +++ b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts @@ -157,6 +157,7 @@ ldo7_reg: LDO7 { regulator-min-microvolt = <700000>; regulator-max-microvolt = <1150000>; regulator-enable-ramp-delay = <125>; + regulator-always-on; }; ldo8_reg: LDO8 { -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel