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Mon, 25 Jun 2018 05:53:59 +0000 Received: from AM3PR04MB1315.eurprd04.prod.outlook.com ([fe80::a024:25ab:f457:64c7]) by AM3PR04MB1315.eurprd04.prod.outlook.com ([fe80::a024:25ab:f457:64c7%6]) with mapi id 15.20.0884.023; Mon, 25 Jun 2018 05:53:59 +0000 From: Anson Huang To: Robin Gong , "shawnguo@kernel.org" , "kernel@pengutronix.de" , Fabio Estevam , "robh+dt@kernel.org" , "mark.rutland@arm.com" CC: "linux-arm-kernel@lists.infradead.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , dl-linux-imx Subject: RE: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on Thread-Topic: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on Thread-Index: AQHUDD3lRelNZaT6s0KCSbdeyjhmZKRweO5w Date: Mon, 25 Jun 2018 05:53:59 +0000 Message-ID: References: <1529930051-14122-1-git-send-email-yibin.gong@nxp.com> In-Reply-To: <1529930051-14122-1-git-send-email-yibin.gong@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=anson.huang@nxp.com; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5db5e635-3bf2-4d16-3f34-08d5da600c04 X-MS-Exchange-CrossTenant-originalarrivaltime: 25 Jun 2018 05:53:59.5019 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM3PR04MB1250 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Acked-by: Anson Huang I also saw such issue on i.MX6SLL evk board, and also sent out patch for i.= MX6SLL. Anson Huang Best Regards! > -----Original Message----- > From: Robin Gong > Sent: Monday, June 25, 2018 8:34 PM > To: shawnguo@kernel.org; kernel@pengutronix.de; Fabio Estevam > ; robh+dt@kernel.org; mark.rutland@arm.com; > Anson Huang > Cc: linux-arm-kernel@lists.infradead.org; devicetree@vger.kernel.org; > linux-kernel@vger.kernel.org; dl-linux-imx > Subject: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on >=20 > SW4 is one power rail for LPDDR2 on i.mx6sl-evk, so it should be kept alw= ays on. > But it's disabled after switch disabled interface implemented in pfuze dr= iver > 'commit 5fe156f1cab4 > ("regulator: pfuze100: add enable/disable for switch")'.Thus, it breaks k= ernel > bootup. Add 'regulator-always-on' for SW4. >=20 > Signed-off-by: Robin Gong > --- > arch/arm/boot/dts/imx6sl-evk.dts | 1 + > 1 file changed, 1 insertion(+) >=20 > diff --git a/arch/arm/boot/dts/imx6sl-evk.dts > b/arch/arm/boot/dts/imx6sl-evk.dts > index 37e792f..798df66 100644 > --- a/arch/arm/boot/dts/imx6sl-evk.dts > +++ b/arch/arm/boot/dts/imx6sl-evk.dts > @@ -199,6 +199,7 @@ > sw4_reg: sw4 { > regulator-min-microvolt =3D <800000>; > regulator-max-microvolt =3D <3300000>; > + regulator-always-on; > }; >=20 > swbst_reg: swbst { > -- > 2.7.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anson Huang Subject: RE: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on Date: Mon, 25 Jun 2018 05:53:59 +0000 Message-ID: References: <1529930051-14122-1-git-send-email-yibin.gong@nxp.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <1529930051-14122-1-git-send-email-yibin.gong@nxp.com> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: Robin Gong , "shawnguo@kernel.org" , "kernel@pengutronix.de" , Fabio Estevam , "robh+dt@kernel.org" , "mark.rutland@arm.com" Cc: "linux-arm-kernel@lists.infradead.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , dl-linux-imx List-Id: devicetree@vger.kernel.org Acked-by: Anson Huang I also saw such issue on i.MX6SLL evk board, and also sent out patch for i.= MX6SLL. Anson Huang Best Regards! > -----Original Message----- > From: Robin Gong > Sent: Monday, June 25, 2018 8:34 PM > To: shawnguo@kernel.org; kernel@pengutronix.de; Fabio Estevam > ; robh+dt@kernel.org; mark.rutland@arm.com; > Anson Huang > Cc: linux-arm-kernel@lists.infradead.org; devicetree@vger.kernel.org; > linux-kernel@vger.kernel.org; dl-linux-imx > Subject: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on >=20 > SW4 is one power rail for LPDDR2 on i.mx6sl-evk, so it should be kept alw= ays on. > But it's disabled after switch disabled interface implemented in pfuze dr= iver > 'commit 5fe156f1cab4 > ("regulator: pfuze100: add enable/disable for switch")'.Thus, it breaks k= ernel > bootup. Add 'regulator-always-on' for SW4. >=20 > Signed-off-by: Robin Gong > --- > arch/arm/boot/dts/imx6sl-evk.dts | 1 + > 1 file changed, 1 insertion(+) >=20 > diff --git a/arch/arm/boot/dts/imx6sl-evk.dts > b/arch/arm/boot/dts/imx6sl-evk.dts > index 37e792f..798df66 100644 > --- a/arch/arm/boot/dts/imx6sl-evk.dts > +++ b/arch/arm/boot/dts/imx6sl-evk.dts > @@ -199,6 +199,7 @@ > sw4_reg: sw4 { > regulator-min-microvolt =3D <800000>; > regulator-max-microvolt =3D <3300000>; > + regulator-always-on; > }; >=20 > swbst_reg: swbst { > -- > 2.7.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: anson.huang@nxp.com (Anson Huang) Date: Mon, 25 Jun 2018 05:53:59 +0000 Subject: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on In-Reply-To: <1529930051-14122-1-git-send-email-yibin.gong@nxp.com> References: <1529930051-14122-1-git-send-email-yibin.gong@nxp.com> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Acked-by: Anson Huang I also saw such issue on i.MX6SLL evk board, and also sent out patch for i.MX6SLL. Anson Huang Best Regards! > -----Original Message----- > From: Robin Gong > Sent: Monday, June 25, 2018 8:34 PM > To: shawnguo at kernel.org; kernel at pengutronix.de; Fabio Estevam > ; robh+dt at kernel.org; mark.rutland at arm.com; > Anson Huang > Cc: linux-arm-kernel at lists.infradead.org; devicetree at vger.kernel.org; > linux-kernel at vger.kernel.org; dl-linux-imx > Subject: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on > > SW4 is one power rail for LPDDR2 on i.mx6sl-evk, so it should be kept always on. > But it's disabled after switch disabled interface implemented in pfuze driver > 'commit 5fe156f1cab4 > ("regulator: pfuze100: add enable/disable for switch")'.Thus, it breaks kernel > bootup. Add 'regulator-always-on' for SW4. > > Signed-off-by: Robin Gong > --- > arch/arm/boot/dts/imx6sl-evk.dts | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/boot/dts/imx6sl-evk.dts > b/arch/arm/boot/dts/imx6sl-evk.dts > index 37e792f..798df66 100644 > --- a/arch/arm/boot/dts/imx6sl-evk.dts > +++ b/arch/arm/boot/dts/imx6sl-evk.dts > @@ -199,6 +199,7 @@ > sw4_reg: sw4 { > regulator-min-microvolt = <800000>; > regulator-max-microvolt = <3300000>; > + regulator-always-on; > }; > > swbst_reg: swbst { > -- > 2.7.4