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charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 1db7620e-bcf1-4a68-c047-08d5dfb64672 X-MS-Exchange-CrossTenant-originalarrivaltime: 02 Jul 2018 00:53:50.0609 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM3PR04MB1347 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org DQoNCkFuc29uIEh1YW5nDQpCZXN0IFJlZ2FyZHMhDQoNCg0KPiAtLS0tLU9yaWdpbmFsIE1lc3Nh Z2UtLS0tLQ0KPiBGcm9tOiBGYWJpbyBFc3RldmFtIFttYWlsdG86ZmVzdGV2YW1AZ21haWwuY29t XQ0KPiBTZW50OiBNb25kYXksIEp1bHkgMiwgMjAxOCA3OjMzIEFNDQo+IFRvOiBTaGF3biBHdW8g PHNoYXduZ3VvQGtlcm5lbC5vcmc+OyBBbnNvbiBIdWFuZw0KPiA8YW5zb24uaHVhbmdAbnhwLmNv bT4NCj4gQ2M6IFJvYmluIEdvbmcgPHlpYmluLmdvbmdAbnhwLmNvbT47IE1hcmsgUnV0bGFuZA0K PiA8bWFyay5ydXRsYW5kQGFybS5jb20+OyBvcGVuIGxpc3Q6T1BFTiBGSVJNV0FSRSBBTkQgRkxB VFRFTkVEDQo+IERFVklDRSBUUkVFIEJJTkRJTkdTIDxkZXZpY2V0cmVlQHZnZXIua2VybmVsLm9y Zz47IGxpbnV4LWtlcm5lbA0KPiA8bGludXgta2VybmVsQHZnZXIua2VybmVsLm9yZz47IFJvYiBI ZXJyaW5nIDxyb2JoK2R0QGtlcm5lbC5vcmc+Ow0KPiBkbC1saW51eC1pbXggPGxpbnV4LWlteEBu eHAuY29tPjsgU2FzY2hhIEhhdWVyIDxrZXJuZWxAcGVuZ3V0cm9uaXguZGU+Ow0KPiBGYWJpbyBF c3RldmFtIDxmYWJpby5lc3RldmFtQG54cC5jb20+OyBtb2RlcmF0ZWQgbGlzdDpBUk0vRlJFRVND QUxFDQo+IElNWCAvIE1YQyBBUk0gQVJDSElURUNUVVJFIDxsaW51eC1hcm0ta2VybmVsQGxpc3Rz LmluZnJhZGVhZC5vcmc+DQo+IFN1YmplY3Q6IFJlOiBbUEFUQ0ggdjFdIEFSTTogZHRzOiBpbXg2 c2wtZXZrOiBrZWVwIHN3NCBhbHdheXMgb24NCj4gDQo+IE9uIFN1biwgSnVsIDEsIDIwMTggYXQg NjozNCBBTSwgU2hhd24gR3VvIDxzaGF3bmd1b0BrZXJuZWwub3JnPiB3cm90ZToNCj4gPiBPbiBN b24sIEp1biAyNSwgMjAxOCBhdCAwODozNDoxMVBNICswODAwLCBSb2JpbiBHb25nIHdyb3RlOg0K PiA+PiBTVzQgaXMgb25lIHBvd2VyIHJhaWwgZm9yIExQRERSMiBvbiBpLm14NnNsLWV2aywgc28g aXQgc2hvdWxkIGJlIGtlcHQNCj4gPj4gYWx3YXlzIG9uLiBCdXQgaXQncyBkaXNhYmxlZCBhZnRl ciBzd2l0Y2ggZGlzYWJsZWQgaW50ZXJmYWNlDQo+ID4+IGltcGxlbWVudGVkIGluIHBmdXplIGRy aXZlciAnY29tbWl0IDVmZTE1NmYxY2FiNA0KPiA+PiAoInJlZ3VsYXRvcjogcGZ1emUxMDA6IGFk ZCBlbmFibGUvZGlzYWJsZSBmb3Igc3dpdGNoIiknLlRodXMsIGl0DQo+ID4+IGJyZWFrcyBrZXJu ZWwgYm9vdHVwLiBBZGQgJ3JlZ3VsYXRvci1hbHdheXMtb24nIGZvciBTVzQuDQo+ID4+DQo+ID4+ IFNpZ25lZC1vZmYtYnk6IFJvYmluIEdvbmcgPHlpYmluLmdvbmdAbnhwLmNvbT4NCj4gPg0KPiA+ IERvZXMgdGhhdCBtZWFuIGJvYXJkcyB3aXRoIGV4aXN0aW5nIERUQiBpbnN0YWxsZWQgd2lsbCBz dG9wIHdvcmtpbmcNCj4gPiB3aXRoIG5ldyBrZXJuZWw/ICBUaGF0J3MgYmFkLCBhbmQgdGhlIGtl cm5lbCBjb21taXQgc2hvdWxkIHByb2JhYmx5IGJlDQo+ID4gcmV2ZXJ0ZWQuDQo+IA0KPiBZZXMs IHRoaXMgaXMgYSBnb29kIHBvaW50Lg0KPiANCj4gQW5zb24sDQo+IA0KPiBTaG91bGQgNWZlMTU2 ZjFjYWI0ICgicmVndWxhdG9yOiBwZnV6ZTEwMDogYWRkIGVuYWJsZS9kaXNhYmxlIGZvcg0KPiBz d2l0Y2giKSBiZSByZXZlcnRlZCB0byBhdm9pZCBzdWNoIGJyZWFrYWdlPw0KIA0KWWVzLCBJIHRo aW5rIHdlIGNhbiByZXZlcnQgaXQgdG8gYXZvaWQgYnJlYWthZ2UuIERpZG4ndCBub3RpY2UgdGhh dCBzb21lDQppLk1YIHBsYXRmb3JtIGRvIE5PVCBoYXZlIHRob3NlIGNyaXRpY2FsIHN3aXRjaGVz IGFsd2F5cy1vbi4NCg0KQW5zb24uDQoNCg== 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, 2 Jul 2018 00:53:50 +0000 Message-ID: References: <1529930051-14122-1-git-send-email-yibin.gong@nxp.com> <20180701093402.GN4348@dragon> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: Fabio Estevam , Shawn Guo Cc: Robin Gong , Mark Rutland , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , linux-kernel , Rob Herring , dl-linux-imx , Sascha Hauer , Fabio Estevam , "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" List-Id: devicetree@vger.kernel.org DQoNCkFuc29uIEh1YW5nDQpCZXN0IFJlZ2FyZHMhDQoNCg0KPiAtLS0tLU9yaWdpbmFsIE1lc3Nh Z2UtLS0tLQ0KPiBGcm9tOiBGYWJpbyBFc3RldmFtIFttYWlsdG86ZmVzdGV2YW1AZ21haWwuY29t XQ0KPiBTZW50OiBNb25kYXksIEp1bHkgMiwgMjAxOCA3OjMzIEFNDQo+IFRvOiBTaGF3biBHdW8g PHNoYXduZ3VvQGtlcm5lbC5vcmc+OyBBbnNvbiBIdWFuZw0KPiA8YW5zb24uaHVhbmdAbnhwLmNv bT4NCj4gQ2M6IFJvYmluIEdvbmcgPHlpYmluLmdvbmdAbnhwLmNvbT47IE1hcmsgUnV0bGFuZA0K PiA8bWFyay5ydXRsYW5kQGFybS5jb20+OyBvcGVuIGxpc3Q6T1BFTiBGSVJNV0FSRSBBTkQgRkxB VFRFTkVEDQo+IERFVklDRSBUUkVFIEJJTkRJTkdTIDxkZXZpY2V0cmVlQHZnZXIua2VybmVsLm9y Zz47IGxpbnV4LWtlcm5lbA0KPiA8bGludXgta2VybmVsQHZnZXIua2VybmVsLm9yZz47IFJvYiBI ZXJyaW5nIDxyb2JoK2R0QGtlcm5lbC5vcmc+Ow0KPiBkbC1saW51eC1pbXggPGxpbnV4LWlteEBu eHAuY29tPjsgU2FzY2hhIEhhdWVyIDxrZXJuZWxAcGVuZ3V0cm9uaXguZGU+Ow0KPiBGYWJpbyBF c3RldmFtIDxmYWJpby5lc3RldmFtQG54cC5jb20+OyBtb2RlcmF0ZWQgbGlzdDpBUk0vRlJFRVND QUxFDQo+IElNWCAvIE1YQyBBUk0gQVJDSElURUNUVVJFIDxsaW51eC1hcm0ta2VybmVsQGxpc3Rz LmluZnJhZGVhZC5vcmc+DQo+IFN1YmplY3Q6IFJlOiBbUEFUQ0ggdjFdIEFSTTogZHRzOiBpbXg2 c2wtZXZrOiBrZWVwIHN3NCBhbHdheXMgb24NCj4gDQo+IE9uIFN1biwgSnVsIDEsIDIwMTggYXQg NjozNCBBTSwgU2hhd24gR3VvIDxzaGF3bmd1b0BrZXJuZWwub3JnPiB3cm90ZToNCj4gPiBPbiBN b24sIEp1biAyNSwgMjAxOCBhdCAwODozNDoxMVBNICswODAwLCBSb2JpbiBHb25nIHdyb3RlOg0K PiA+PiBTVzQgaXMgb25lIHBvd2VyIHJhaWwgZm9yIExQRERSMiBvbiBpLm14NnNsLWV2aywgc28g aXQgc2hvdWxkIGJlIGtlcHQNCj4gPj4gYWx3YXlzIG9uLiBCdXQgaXQncyBkaXNhYmxlZCBhZnRl ciBzd2l0Y2ggZGlzYWJsZWQgaW50ZXJmYWNlDQo+ID4+IGltcGxlbWVudGVkIGluIHBmdXplIGRy aXZlciAnY29tbWl0IDVmZTE1NmYxY2FiNA0KPiA+PiAoInJlZ3VsYXRvcjogcGZ1emUxMDA6IGFk ZCBlbmFibGUvZGlzYWJsZSBmb3Igc3dpdGNoIiknLlRodXMsIGl0DQo+ID4+IGJyZWFrcyBrZXJu ZWwgYm9vdHVwLiBBZGQgJ3JlZ3VsYXRvci1hbHdheXMtb24nIGZvciBTVzQuDQo+ID4+DQo+ID4+ IFNpZ25lZC1vZmYtYnk6IFJvYmluIEdvbmcgPHlpYmluLmdvbmdAbnhwLmNvbT4NCj4gPg0KPiA+ IERvZXMgdGhhdCBtZWFuIGJvYXJkcyB3aXRoIGV4aXN0aW5nIERUQiBpbnN0YWxsZWQgd2lsbCBz dG9wIHdvcmtpbmcNCj4gPiB3aXRoIG5ldyBrZXJuZWw/ICBUaGF0J3MgYmFkLCBhbmQgdGhlIGtl cm5lbCBjb21taXQgc2hvdWxkIHByb2JhYmx5IGJlDQo+ID4gcmV2ZXJ0ZWQuDQo+IA0KPiBZZXMs IHRoaXMgaXMgYSBnb29kIHBvaW50Lg0KPiANCj4gQW5zb24sDQo+IA0KPiBTaG91bGQgNWZlMTU2 ZjFjYWI0ICgicmVndWxhdG9yOiBwZnV6ZTEwMDogYWRkIGVuYWJsZS9kaXNhYmxlIGZvcg0KPiBz d2l0Y2giKSBiZSByZXZlcnRlZCB0byBhdm9pZCBzdWNoIGJyZWFrYWdlPw0KIA0KWWVzLCBJIHRo aW5rIHdlIGNhbiByZXZlcnQgaXQgdG8gYXZvaWQgYnJlYWthZ2UuIERpZG4ndCBub3RpY2UgdGhh dCBzb21lDQppLk1YIHBsYXRmb3JtIGRvIE5PVCBoYXZlIHRob3NlIGNyaXRpY2FsIHN3aXRjaGVz IGFsd2F5cy1vbi4NCg0KQW5zb24uDQoNCg== From mboxrd@z Thu Jan 1 00:00:00 1970 From: anson.huang@nxp.com (Anson Huang) Date: Mon, 2 Jul 2018 00:53:50 +0000 Subject: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on In-Reply-To: References: <1529930051-14122-1-git-send-email-yibin.gong@nxp.com> <20180701093402.GN4348@dragon> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Anson Huang Best Regards! > -----Original Message----- > From: Fabio Estevam [mailto:festevam at gmail.com] > Sent: Monday, July 2, 2018 7:33 AM > To: Shawn Guo ; Anson Huang > > Cc: Robin Gong ; Mark Rutland > ; open list:OPEN FIRMWARE AND FLATTENED > DEVICE TREE BINDINGS ; linux-kernel > ; Rob Herring ; > dl-linux-imx ; Sascha Hauer ; > Fabio Estevam ; moderated list:ARM/FREESCALE > IMX / MXC ARM ARCHITECTURE > Subject: Re: [PATCH v1] ARM: dts: imx6sl-evk: keep sw4 always on > > On Sun, Jul 1, 2018 at 6:34 AM, Shawn Guo wrote: > > On Mon, Jun 25, 2018 at 08:34:11PM +0800, Robin Gong wrote: > >> 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 > > > > Does that mean boards with existing DTB installed will stop working > > with new kernel? That's bad, and the kernel commit should probably be > > reverted. > > Yes, this is a good point. > > Anson, > > Should 5fe156f1cab4 ("regulator: pfuze100: add enable/disable for > switch") be reverted to avoid such breakage? Yes, I think we can revert it to avoid breakage. Didn't notice that some i.MX platform do NOT have those critical switches always-on. Anson.