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Thu, 4 Feb 2021 07:32:35 +0000 From: Sven Schuchmann To: Pavel Machek CC: Dan Murphy , Rob Herring , "linux-leds@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: AW: [PATCH v1] leds: lp50xx: add setting of default intensity from DT Thread-Topic: [PATCH v1] leds: lp50xx: add setting of default intensity from DT Thread-Index: AQHW7lFOn/1Jlt56EkOy+ZVk/3cx2qpGlWAAgAAP4bCAABNlgIAABpCggAAHMACAAOx+cA== Date: Thu, 4 Feb 2021 07:32:35 +0000 Message-ID: References: <20210119105312.2636-1-schuchmann@schleissheimer.de> <20210203142940.GB12369@duo.ucw.cz> <20210203163555.GA23019@duo.ucw.cz> <20210203172508.GC23019@duo.ucw.cz> In-Reply-To: <20210203172508.GC23019@duo.ucw.cz> Accept-Language: de-DE, en-US Content-Language: de-DE X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: ucw.cz; dkim=none (message not signed) header.d=none;ucw.cz; dmarc=none action=none header.from=schleissheimer.de; x-originating-ip: [62.153.209.162] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 4144fc5d-3533-40a4-8496-08d8c8df0a69 x-ms-traffictypediagnostic: DB6P190MB0503: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:9508; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: schleissheimer.de X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DB8P190MB0634.EURP190.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-Network-Message-Id: 4144fc5d-3533-40a4-8496-08d8c8df0a69 X-MS-Exchange-CrossTenant-originalarrivaltime: 04 Feb 2021 07:32:35.0237 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: ba05321a-a007-44df-8805-c7e62d5887b5 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 7rQ/Effehgq0rafZ3jq8xI13NTVPhYPd6CqbjngLNyyBClbe8QaKTBMhIT9MMyFXtQY347xq6H6HQGKf9tXzxhyjxAzbZYujURIyNJtIDMA= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB6P190MB0503 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Helo Pavel, > > > Yes, sounds reasonable. Could we get default intensity of 100% on all > > > channels if nothing else is specified? > > > > > > Or maybe simply "if intensity is not specified, start with 100%, and > > > use explicit =3D0 if other color is expected". > > > > > Mh, if someone is already using the led driver and updates to a newer k= ernel > > we would then turn on all leds per default to the maximum intensity dur= ing boot > > until they are set the way they should be from userspace. I don't know = if this > > is what we want? If yes, sure, we could set them to maximum per > > default. >=20 > Not really. If they don't have trigger configured, nothing will happen. Oops, you are right, my fault. >=20 > > Also if we want to use Percentage Values (%) for setting the intensity > > I think this should also be done for the userspace interfaces and > > not only from DT. >=20 > We don't want to use percentages in the API (but let me still use > percentages in discussion). No Problem. Best Regards, Sven