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[23.128.96.18]) by mx.google.com with ESMTP id d19si13223896ejt.707.2020.08.17.15.43.23; Mon, 17 Aug 2020 15:43:46 -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="yrk9iv/U"; 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 S2390883AbgHQSeX (ORCPT + 99 others); Mon, 17 Aug 2020 14:34:23 -0400 Received: from mail.kernel.org ([198.145.29.99]:47548 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731005AbgHQQAL (ORCPT ); Mon, 17 Aug 2020 12:00:11 -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 D31AF20885; Mon, 17 Aug 2020 16:00:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597680011; bh=lWgkR05ZLdyajB7h9qa3gzGicGf+5etfvA1S5tRgY10=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yrk9iv/U4Mt1OmlX+f3zWIuKcuKi6SUjVbcFPEQG9b2vLMJ2XN/ws6oCbPrvxwOmV tV+3MiNIm6Twa6fMACLZN3ardwPJhA9ZDeRfg2ylVais2+5PoLfV2Wo8BjRiak2RXT +K/HOCoWGumOrW8J0k7fUzA8GTdUQpbQt5nmcT4I= 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 5.4 019/270] arm64: dts: exynos: Fix silent hang after boot on Espresso Date: Mon, 17 Aug 2020 17:13:40 +0200 Message-Id: <20200817143756.745688466@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143755.807583758@linuxfoundation.org> References: <20200817143755.807583758@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 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