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dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=leica-geosystems.com.cn; Received-SPF: Pass (protection.outlook.com: domain of leica-geosystems.com.cn designates 193.8.40.94 as permitted sender) receiver=protection.outlook.com; client-ip=193.8.40.94; helo=hexagon.com; pr=C Received: from hexagon.com (193.8.40.94) by AM4PEPF00025F9C.mail.protection.outlook.com (10.167.16.11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8922.1 via Frontend Transport; Fri, 4 Jul 2025 10:43:47 +0000 Received: from GEO-W5CG2253GWB.lgs-net.com ([10.132.33.66]) by hexagon.com with Microsoft SMTPSVC(10.0.17763.1697); Fri, 4 Jul 2025 12:43:46 +0200 From: LI Qingwu To: lee@kernel.org, pavel@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Qing-wu.Li@leica-geosystems.com.cn Cc: bsp-development.geo@leica-geosystems.com Subject: [PATCH V5 1/2] dt-bindings: leds: pwm: add enable-gpios property Date: Fri, 4 Jul 2025 18:43:37 +0800 Message-ID: <20250704104338.46546-2-Qing-wu.Li@leica-geosystems.com.cn> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250704104338.46546-1-Qing-wu.Li@leica-geosystems.com.cn> References: <20250704104338.46546-1-Qing-wu.Li@leica-geosystems.com.cn> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-OriginalArrivalTime: 04 Jul 2025 10:43:46.0845 (UTC) FILETIME=[85210CD0:01DBECD0] X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM4PEPF00025F9C:EE_|PA4PR06MB8475:EE_ X-MS-Office365-Filtering-Correlation-Id: 4eea86b4-af2c-4d17-3f53-08ddbae7a7de X-SET-LOWER-SCL-SCANNER: YES X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|36860700013|82310400026; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?vABrjRbijw48e1k6Sh4wkatk9XQ1IjoPqujAP6D4Mqt81s/yEZd6/VJqqSmh?= =?us-ascii?Q?64KxYg4uiUObO7xt6I9ks2sP1l/pwC892uM2bNsGKxDpjzSw3zNMg0SNgCSR?= =?us-ascii?Q?/EpO6u5AftX4tY+ftIFGb1Nk2E57iIYXYbnH4OJ9svPXMhhzBbdzV1DUWvaH?= =?us-ascii?Q?ccBirF+HL1ytTiwHGv6BuqgH5AUWWr2SzYqmcqtB8P4kX286hxR6Je9u/54q?= =?us-ascii?Q?DSPuSWEXJr3IVvmrLWl69bmoMpHM54fRYUWWZeMKAJjk/N3O24T5LhuCg/I5?= =?us-ascii?Q?kvH6FCR4Ce4+45IU7DRIR/7WbQvDoNlKkfOidVyRI41RZDRWCaVQHbp6kcLE?= =?us-ascii?Q?bBKvmhsTNz6tfZs40gtn2BqY+HxhMdZdfeayaNyzAo9UWLamE/Vlhy8WUt4z?= =?us-ascii?Q?fIzvpMr9YKJb7M/yJTEZOkblzipv9YE9nEDVp6BqKWbrYngu9TXL6/7XPrOd?= =?us-ascii?Q?MpZSJ20sNkDWqk3iLkDj2ucQ/E0fQiuy8ow1509wPdcY92GsVxUP7XLjE3+h?= =?us-ascii?Q?D+BkAfO9dC1ALAsflS3Qr0O7fD/NxLbcrOs4wOZQ4bpCtRke5q1/rWyvjlAE?= =?us-ascii?Q?2WE7IbMS0yuJO0AJXeMYDBnWx60vae9oMcPjCLA9IuYb+uDG57o0jPZ59liz?= =?us-ascii?Q?8U/gSwo8D2juhAfs/qXc30BoTlY6PO6S2F+Is/NPW9R1Y4uFTzt5JOtRmSvI?= =?us-ascii?Q?Sbw/wrhWufQwx78msQkzIMa0WNY4o9Bw+4qhYXbtseuqoNSFgI5zK36+w0UI?= =?us-ascii?Q?bF10/ESpBqX/7MlxtDwhYb6W+9sj6PZAVrboFF36AXV4jwdJ43PiRbjvYn1d?= =?us-ascii?Q?RGBocpoD0zzWC4AxM9+sbQtIKZ2xcrbILZ6148mXuJgVapIjrL42/J9mp3wi?= =?us-ascii?Q?oTsNkZqo7hPNSNnx5YuxW9jn0NTyr6D1f9RF9W8HC7VwtSt5UqLGCWHuK2X1?= =?us-ascii?Q?shwoNZ47SM+O0K/xYawOJR76nMbXOcTeTi9Gw48/M7U65UU5hCmS3hMykP3B?= =?us-ascii?Q?/KFzxkOyVfxpbMBG98P8AKL9tJUGusz3PD63txOYIcFBhQ8ku4hu+GHcuZZ5?= =?us-ascii?Q?WWNoDOqVWs7Ft1eiUIQvZQDc+4SBOspCKAIclW/ZJiyvjrjN+o2qyD39f1lM?= =?us-ascii?Q?bso0VoRCuBXeWR0G6e2uHJOM7W5ZDytBI0SDe+QgHkFmWbV5JeGaUNWt6yn/?= =?us-ascii?Q?A3nc/mlVvszonFkzEKmEyAjMOw2B4PJCPBqsh8WQUMUgCLoqk7BmTzLPLYMp?= =?us-ascii?Q?6+2x8aKqFWU0ua+a+jSw4LTUGYnkxSCVMNdbsHqBApHmhLhmG82uJYQjZbUr?= =?us-ascii?Q?Urcz4ePl0eq5WoDARkKrpaa5Izt6fiGL7dYXrQA7lp5Ke2/VcyHdmq7AMWlK?= =?us-ascii?Q?sYMP8EZ65vKDqjdx+ZBKOwBwr6ZjrKWtbFV77IEMsXMJZ6k7xHm15FES844u?= =?us-ascii?Q?XvJQS4BB7bwUZid+lx1B9jLx1yBd1kKwzSojPRprjF7381pMgV6w84YEshmW?= =?us-ascii?Q?4TDFijSKxhijAV/tyN2ysEKoNGpCriEK95oaP0C9UhKhrQbiZX0voDQrrw?= =?us-ascii?Q?=3D=3D?= X-Forefront-Antispam-Report: CIP:193.8.40.94;CTRY:CH;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:hexagon.com;PTR:ahersrvdom50.leica-geosystems.com;CAT:NONE;SFS:(13230040)(1800799024)(376014)(36860700013)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: leica-geosystems.com.cn X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Jul 2025 10:43:47.2104 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4eea86b4-af2c-4d17-3f53-08ddbae7a7de X-MS-Exchange-CrossTenant-Id: 1b16ab3e-b8f6-4fe3-9f3e-2db7fe549f6a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=1b16ab3e-b8f6-4fe3-9f3e-2db7fe549f6a;Ip=[193.8.40.94];Helo=[hexagon.com] X-MS-Exchange-CrossTenant-AuthSource: AM4PEPF00025F9C.EURPRD83.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PA4PR06MB8475 Content-Type: text/plain; charset="utf-8" Some PWM LED driver chips like TPS92380 and LT3743 require a separate enable signal in addition to PWM control. Add this property to allow device trees to specify such GPIO, which will be controlled automatically by the driver based on the LED brightness state. Link: https://www.ti.com/lit/gpn/tps92380 Link: https://www.analog.com/media/en/technical-documentation/data-sheets/3= 743fe.pdf Signed-off-by: LI Qingwu Reviewed-by: Krzysztof Kozlowski --- Documentation/devicetree/bindings/leds/leds-pwm.yaml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/leds/leds-pwm.yaml b/Documen= tation/devicetree/bindings/leds/leds-pwm.yaml index 61b97e8bc36d0..6c4fcefbe25f9 100644 --- a/Documentation/devicetree/bindings/leds/leds-pwm.yaml +++ b/Documentation/devicetree/bindings/leds/leds-pwm.yaml @@ -40,6 +40,13 @@ patternProperties: initialization. If the option is not set then max brightness is = used. $ref: /schemas/types.yaml#/definitions/uint32 =20 + enable-gpios: + description: + GPIO for LED hardware enable control. Set active when brightness= is + non-zero and inactive when brightness is zero. + The GPIO default state follows the "default-state" property. + maxItems: 1 + required: - pwms - max-brightness --=20 2.43.0