From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BB78F15D5A6; Mon, 29 Jan 2024 17:13:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706548382; cv=none; b=MWje5FuUJW+orW0pLr1lYVL0YUXqxgdQtEcjykJ0LsDZE+g9hnYKeqVDbLQOmzlMLoPaM5HNEp1Kbog3pOQZisPZkobPRhiMvbpbGNKjn4kLC4PqKcc9H8egtud8Noujr1GMIyhtktGjURgbwvrCJx9Kmw1Gif3nzLGhr2WG1Z8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706548382; c=relaxed/simple; bh=w8Y3+rjt3nNDgfZELEf/+Pg8lGDQhpal1qEjvsJ6bLE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Mlr2+KZW4hb3u4TuFvL2tt6ek763iojVJWItL/iagh2uOOWVxcL2lna1dZtCfsbo3/YU2PG4TKTbFb2ILNnue9Kc1WxxiclxMgJz74jGpO1efw1g0q4gNdK4RUPMZ+QUjwEBI/tklphvTts8bU0PS4cIacf6VBF4khdzGa/RjiY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=sA7JmH5T; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="sA7JmH5T" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7C652C433F1; Mon, 29 Jan 2024 17:13:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1706548382; bh=w8Y3+rjt3nNDgfZELEf/+Pg8lGDQhpal1qEjvsJ6bLE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sA7JmH5TUzMDi8Y1dNdBA2/RDUmXxQUfeNimo60Dfn96iBbbI1KI1FJtUaWPp2SDn lAHcmAL3BfCA4hIyR7oRC8uF982ZD988D/la2MVfeYCZ7uY0JsKfFyYXvA7UHopFlt F4hS4aKLsL+YBeKrNi2O+8x8bzGL+G/xykuP34t8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Paul Cercueil , Krzysztof Kozlowski , Sasha Levin Subject: [PATCH 6.1 154/185] ARM: dts: samsung: exynos4210-i9100: Unconditionally enable LDO12 Date: Mon, 29 Jan 2024 09:05:54 -0800 Message-ID: <20240129170003.546543133@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240129165958.589924174@linuxfoundation.org> References: <20240129165958.589924174@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Paul Cercueil [ Upstream commit 84228d5e29dbc7a6be51e221000e1d122125826c ] The kernel hangs for a good 12 seconds without any info being printed to dmesg, very early in the boot process, if this regulator is not enabled. Force-enable it to work around this issue, until we know more about the underlying problem. Signed-off-by: Paul Cercueil Fixes: 8620cc2f99b7 ("ARM: dts: exynos: Add devicetree file for the Galaxy S2") Cc: stable@vger.kernel.org # v5.8+ Link: https://lore.kernel.org/r/20231206221556.15348-2-paul@crapouillou.net Signed-off-by: Krzysztof Kozlowski Signed-off-by: Sasha Levin --- arch/arm/boot/dts/exynos4210-i9100.dts | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/boot/dts/exynos4210-i9100.dts b/arch/arm/boot/dts/exynos4210-i9100.dts index 53e023fc1cac..b4c7b642e456 100644 --- a/arch/arm/boot/dts/exynos4210-i9100.dts +++ b/arch/arm/boot/dts/exynos4210-i9100.dts @@ -521,6 +521,14 @@ vtcam_reg: LDO12 { regulator-name = "VT_CAM_1.8V"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; + + /* + * Force-enable this regulator; otherwise the + * kernel hangs very early in the boot process + * for about 12 seconds, without apparent + * reason. + */ + regulator-always-on; }; vcclcd_reg: LDO13 { -- 2.43.0