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 2A0197FBA0; Wed, 21 Feb 2024 13:29:57 +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=1708522198; cv=none; b=tctrs+IGA7zn2A7K6UO+lQKacgBFDV4yiBe/8ne26deOcich2BtNBII4d0U8mCOmbfvy3caKM02LAbYorfS5pwodmq3IhMZXP/vEphMLhNtMz2JQPWJSCMgfNIS0j/h+t41ca6xF/nIDCe9guI1U3YCQ6o6mYeQLSg7zfXRvgco= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708522198; c=relaxed/simple; bh=wuv6rw/IUH5pvsEkx/BT+pVrhwKAaI1WuiUH5WNB1kU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dVrVgH4qFQ4gSr/kMrqmIO+9V8g4dGIbuq6GeUSQoswetZi3BKvgqAksGlzGBHK+EI/Z4u9QXZUT8I1lvYTxi+0BfJlrC7P7dgDCpa+AaRLAhGShEZVGgliTaVVpn/mgs5CYPwKu4UHfqcJu/gc3yQFZ61YVYixdsAIBgPEVGqA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Qoz03Jyf; 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="Qoz03Jyf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4EE0CC433C7; Wed, 21 Feb 2024 13:29:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1708522197; bh=wuv6rw/IUH5pvsEkx/BT+pVrhwKAaI1WuiUH5WNB1kU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Qoz03JyfS7OZ4GDAP+GA/XzJ+j/k1mrWD7tyavn1GTnx1VpssOAiuJRO9TzkXefJs S2BV1XXdRVoTG8CJrHLeRUSNq4yRa71qtopDRBv7qSCzOAUi65PNdWbGTjdueIoAx8 kQ1IFbSJpj5zM3A1h6wQBToeCfEUGIaFs//b8rs4= 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 5.15 102/476] ARM: dts: samsung: exynos4210-i9100: Unconditionally enable LDO12 Date: Wed, 21 Feb 2024 14:02:33 +0100 Message-ID: <20240221130011.747163038@linuxfoundation.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240221130007.738356493@linuxfoundation.org> References: <20240221130007.738356493@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 5.15-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 93880bdbcad9..8232d843bfe0 100644 --- a/arch/arm/boot/dts/exynos4210-i9100.dts +++ b/arch/arm/boot/dts/exynos4210-i9100.dts @@ -520,6 +520,14 @@ 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