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Sun, 5 Jul 2020 16:18:05 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas5p3.samsung.com (KnoxPortal) with ESMTPA id 20200705071805epcas5p37045f009655c40d573077babf17c51fa~eyg9GEk2u1303613036epcas5p3f; Sun, 5 Jul 2020 07:18:05 +0000 (GMT) Received: from epsmgms1p2.samsung.com (unknown [182.195.42.42]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20200705071805epsmtrp25090eb91e8ab90409ad76a1035b7a2de~eyg9FV8YI1763917639epsmtrp2K; Sun, 5 Jul 2020 07:18:05 +0000 (GMT) X-AuditID: b6c32a49-a3fff700000024fb-1b-5f017eadcbdf Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgms1p2.samsung.com (Symantec Messaging Gateway) with SMTP id 8D.9D.08303.CAE710F5; Sun, 5 Jul 2020 16:18:04 +0900 (KST) Received: from Jaguar.sa.corp.samsungelectronics.net (unknown [107.108.73.139]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20200705071803epsmtip1646c3f37d1272c020dbbf589d28f97db~eyg8Ab2pQ0264602646epsmtip1T; Sun, 5 Jul 2020 07:18:03 +0000 (GMT) From: Alim Akhtar To: rzk@kernel.org Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, robh+dt@kernel.org, Alim Akhtar Subject: [PATCH 1/2] arm64: dts: exynos: Fix silent hang after boot Date: Sun, 5 Jul 2020 12:27:46 +0530 Message-Id: <20200705065747.63014-1-alim.akhtar@samsung.com> X-Mailer: git-send-email 2.17.1 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrCIsWRmVeSWpSXmKPExsWy7bCmuu7aOsZ4g6cfJSwezNvGZjH/yDlW i02Pr7FaXN41h81ixvl9TBate4+wW+x8/4HRgd1j06pONo/NS+o9+rasYvT4vEkugCWKyyYl NSezLLVI3y6BK+PrjGnsBX/YKzr797A3MN5l62Lk5JAQMJE4PbOZpYuRi0NIYDejxJo9M6Cc T4wSLzvaGSGcz4wSO661ssC0vF5+kxHEFhLYxShxok8RoqiFSaJ92iFWkASbgLbE3elbmEBs EQEhiQMNv8DGMgscYZRoOP8CLCEs4Cwxf+kjsAYWAVWJab9eg23gFbCR2PnnKiPENnmJ1RsO MIM0SwgsY5dYOmkVK0TCRWJO30Wok4QlXh3fwg5hS0l8frcX6DsOIDtbomeXMUS4RmLpvGNQ 5fYSB67MYQEpYRbQlFi/Sx8kzCzAJ9H7+wkTRCevREebEES1qkTzu6tQndISE7u7oQ7wkOjc 9ZwRpFxIIFZi6k3pCYwysxBmLmBkXMUomVpQnJueWmxaYJiXWq5XnJhbXJqXrpecn7uJERzR Wp47GO8++KB3iJGJg/EQowQHs5IIb682Y7wQb0piZVVqUX58UWlOavEhRmkOFiVxXqUfZ+KE BNITS1KzU1MLUotgskwcnFINTIFX94S+0znE7XYnb8qhXS8trUIKtM21z0vuX8E/5ffx+97R xSaHJG7/OOIts9nb4f/63cxzH4nK8u3Olf3DKXWH47JMveCZFVUySYeUzzQvPdGz+v2LeE63 M8+r3pRJGf2SaYh51W2s+WHreanvXPs/KHQZP0ksOr14VU5dXln9/Dc2Sn/PslS1nY9Klnp6 RfrDdIl7p+adW7HmIv9F1d7/88ueNK/uU9p7ZvVZU4c/zGXMqtV73E441qUZ7S9sqwrsPDUh OEjd4nitluc3Bi7ZrfVyTApWeudsC69vWtB10OCI9oQkNvMpNWWZiRP2XrNMcd7Ynhdp07Jb JkTsG+/n+KauHe1zsny8eT2mKrEUZyQaajEXFScCAAbhY2NXAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrJJMWRmVeSWpSXmKPExsWy7bCSnO6aOsZ4g62nbCwezNvGZjH/yDlW i02Pr7FaXN41h81ixvl9TBate4+wW+x8/4HRgd1j06pONo/NS+o9+rasYvT4vEkugCWKyyYl NSezLLVI3y6BK+PrjGnsBX/YKzr797A3MN5l62Lk5JAQMJF4vfwmYxcjF4eQwA5Gief9L6AS 0hLXN05gh7CFJVb+ew5mCwk0MUl8/p0JYrMJaEvcnb6FCcQWERCSONDwiwVkELPAKUaJ/u2b wRqEBZwl5i99xApiswioSkz79ZoFxOYVsJHY+ecqI8QCeYnVGw4wT2DkWcDIsIpRMrWgODc9 t9iwwCgvtVyvODG3uDQvXS85P3cTIzh0tLR2MO5Z9UHvECMTB+MhRgkOZiUR3l5txngh3pTE yqrUovz4otKc1OJDjNIcLErivF9nLYwTEkhPLEnNTk0tSC2CyTJxcEo1MIlFd9x13LqJUyxI x+2v7rf7b2+a6fF/3v/w68vp6yJctS4EuSldYt/iojIpq9pgwsXpFfWPz3P4NuxsiFTdc3WS 1P5Ld/OlAhZICHNz28amMKucXvit6eAqJqO65U27l3j1p3kd8bxiefH8pXtdzPdOPKxJ4XjR e+isg2CysadA+NTOJT4rigSMU8pvF8Y9PffTbv32ZXLxbBeSFtbqOEk+fRTZwO31yyRuwh45 /qOM19gWfbpQvPqbmNT74Gc5d4zLvcuzOU1VXqaLzbmqdiQydmZ3BNc/99a175dm+OwyPtMn +s44cbKhgO0J33XezDGXLR5pn8ppTgh3mTDnYAbjxL5Lye5dp+d9sjhQqsRSnJFoqMVcVJwI APGLK+OMAgAA X-CMS-MailID: 20200705071805epcas5p37045f009655c40d573077babf17c51fa X-Msg-Generator: CA CMS-TYPE: 105P X-CMS-RootMailID: 20200705071805epcas5p37045f009655c40d573077babf17c51fa References: Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org 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 --- arch/arm64/boot/dts/exynos/exynos7-espresso.dts | 1 + 1 file changed, 1 insertion(+) base-commit: 9e50b94b3eb0d859a2586b5a40d7fd6e5afd9210 diff --git a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts index 790f12ca8981..bb86950032d3 100644 --- a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts +++ b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts @@ -157,6 +157,7 @@ regulator-min-microvolt = <700000>; regulator-max-microvolt = <1150000>; regulator-enable-ramp-delay = <125>; + regulator-always-on; }; ldo8_reg: LDO8 {