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Wed, 29 May 2019 06:25:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=FXKIyHYWRL/5yD5Hh+pQ0F4XUIBGy3kBE/ZPXYhtL3g=; b=JA5CR2KZNqJa8xUoTAif4joAFRYZLWvtNQEi8UxyXfGdETRR47O8lpwIJPHu9rtz/KyjZtAEoaMC/3YVDwSw4iU/YE1PxMBBLKL18Gh796tdfHOaDOUGZK6mUq9aJgjpmBz3Mh6wciXoHhMPGY0RMIc4pkbbbUxwJPuA/duIJH4= Received: from VI1PR04MB5055.eurprd04.prod.outlook.com (20.177.50.140) by VI1PR04MB3135.eurprd04.prod.outlook.com (10.170.229.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1922.20; Wed, 29 May 2019 10:25:10 +0000 Received: from VI1PR04MB5055.eurprd04.prod.outlook.com ([fe80::9577:379c:2078:19a1]) by VI1PR04MB5055.eurprd04.prod.outlook.com ([fe80::9577:379c:2078:19a1%7]) with mapi id 15.20.1922.021; Wed, 29 May 2019 10:25:10 +0000 From: Leonard Crestez To: Anson Huang , "shawnguo@kernel.org" CC: "robh+dt@kernel.org" , "mark.rutland@arm.com" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , dl-linux-imx Subject: Re: [PATCH] ARM: dts: imx7d-sdb: Make SW2's voltage fixed Thread-Topic: [PATCH] ARM: dts: imx7d-sdb: Make SW2's voltage fixed Thread-Index: AQHVFeqgtOd5kX+KPEOTGMPKRjBjKg== Date: Wed, 29 May 2019 10:25:10 +0000 Message-ID: References: <20190529065056.27516-1-Anson.Huang@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=leonard.crestez@nxp.com; x-originating-ip: [89.37.124.34] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: a8a87c4d-e2b5-40d9-089b-08d6e41fee09 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(5600148)(711020)(4605104)(1401327)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7193020);SRVR:VI1PR04MB3135; x-ms-traffictypediagnostic: VI1PR04MB3135: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:792; x-forefront-prvs: 0052308DC6 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(376002)(396003)(346002)(39860400002)(366004)(136003)(189003)(199004)(14454004)(8676002)(7696005)(66476007)(66946007)(76176011)(446003)(81166006)(53936002)(6436002)(64756008)(8936002)(66556008)(6506007)(66446008)(33656002)(73956011)(102836004)(91956017)(305945005)(2906002)(81156014)(74316002)(3846002)(99286004)(7736002)(76116006)(110136005)(54906003)(26005)(186003)(316002)(229853002)(6116002)(9686003)(68736007)(71190400001)(476003)(55016002)(53546011)(6246003)(66066001)(52536014)(4744005)(478600001)(44832011)(4326008)(2501003)(25786009)(86362001)(5660300002)(71200400001)(256004)(486006);DIR:OUT;SFP:1101;SCL:1;SRVR:VI1PR04MB3135;H:VI1PR04MB5055.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: 9OXalPQEc9KOb93PjJhwt30DnSdiZuwA5fgbQjA7mmWcKs2RFOHNV6VL/rcee8Py8hMuXRCJZrwtr/3bgCDubDiGZvrPtNGx1eoy6thqewojsTziptHZqbamBF0fCh3H+zrQgkpGLxzr0ygItMwyprVhS/JQySaMovd+Z4urmrXVdhs41YsgHegCFYCSL2SfVfzsZTZNl532Cm6HGIabID2wNyt5pjvutshmCvhuruMy4lpZpG6XKngTRQ3nvnikUXY6/dh9mw6RIH5uCB7ym7/9NfhOYVclNC/OJkwdLfBPQY8K9r6l+sJzlbU8Wmof41LiDl0GOJR1WjY+u4rEchURZqJGe/ZQMM9LE5TENsiYmlsQJbtgEvZWTzO2HlyqfISrqT+H3g6KLo+rMY1GwzcKxIH+zSNJocuJs3rwq8k= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: a8a87c4d-e2b5-40d9-089b-08d6e41fee09 X-MS-Exchange-CrossTenant-originalarrivaltime: 29 May 2019 10:25:10.7902 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: leonard.crestez@nxp.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR04MB3135 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 29.05.2019 09:49, Anson.Huang@nxp.com wrote:=0A= > From: Anson Huang =0A= > =0A= > On i.MX7D SDB board, SW2 supplies a lot of peripheral devices,=0A= > its voltage should be fixed at 1.8V. The commit 43967d9b5a7c=0A= > ("ARM: dts: imx7d-sdb: Assign corresponding power supply for LDOs")=0A= > assigns SW2 as the supplier of vdd1p0d, and when its comsumers=0A= > pcie-phy/mipi-phy try to set the vdd1p0d to 1.0V, regulator core=0A= > will also set SW2 to its best(min) voltage to 1.5V, and it will=0A= > lead to board reset.=0A= > =0A= > This patch makes SW2's voltage fixed at 1.8V to avoid this issue.=0A= > =0A= > Fixes: 43967d9b5a7c ("ARM: dts: imx7d-sdb: Assign corresponding power sup= ply for LDOs")=0A= > Reported-by: Leonard Crestez =0A= > Signed-off-by: Anson Huang =0A= =0A= Reviewed-by: Leonard Crestez =0A= =0A= Other boards don't seem to be affected by the original series.=0A=