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[23.128.96.18]) by mx.google.com with ESMTP id gq5si12008641ejb.162.2020.08.17.15.35.41; Mon, 17 Aug 2020 15:36:05 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=wBcKhmeT; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389415AbgHQRLA (ORCPT + 99 others); Mon, 17 Aug 2020 13:11:00 -0400 Received: from mail.kernel.org ([198.145.29.99]:39104 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388615AbgHQQLV (ORCPT ); Mon, 17 Aug 2020 12:11:21 -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 6A0E920748; Mon, 17 Aug 2020 16:11:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597680680; bh=MAmK02myBiOmRCCmZhei5NrKsLigcr8ZtSo2hj9UJi0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wBcKhmeTdyCwmlnvWhUvLkxtZxlLfjibKCVS5Fes/5wiFiPvsOSLLjXqnOfAM2QoH D42e9adHy6duLdMSIKuv537F0p10C48wQHSu8VMrW9Vxd/bY0tWi8Vyd/av+NPp5bw FoYL75Px6jSS8V2lborFWRqrjGxpk3H+to6rtWtY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alim Akhtar , Krzysztof Kozlowski , Sasha Levin Subject: [PATCH 4.19 014/168] arm64: dts: exynos: Fix silent hang after boot on Espresso Date: Mon, 17 Aug 2020 17:15:45 +0200 Message-Id: <20200817143734.431155037@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143733.692105228@linuxfoundation.org> References: <20200817143733.692105228@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.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 00dd89b92b427..d991eae5202f2 100644 --- a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts +++ b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts @@ -152,6 +152,7 @@ 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