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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 193.8.40.99 as permitted sender) receiver=protection.outlook.com; client-ip=193.8.40.99; helo=hexagon.com; pr=C Received: from hexagon.com (193.8.40.99) by DU2PEPF00028D0B.mail.protection.outlook.com (10.167.242.171) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9298.6 via Frontend Transport; Wed, 5 Nov 2025 06:50:16 +0000 Received: from aherlnxbspsrv01.lgs-net.com ([10.61.228.61]) by hexagon.com with Microsoft SMTPSVC(10.0.17763.1697); Wed, 5 Nov 2025 07:50:15 +0100 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: Krzysztof Kozlowski Subject: [PATCH V9 1/3] dt-bindings: leds: pwm: Add enable-gpios property Date: Wed, 5 Nov 2025 06:50:10 +0000 Message-ID: <20251105065012.88796-2-Qing-wu.Li@leica-geosystems.com.cn> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251105065012.88796-1-Qing-wu.Li@leica-geosystems.com.cn> References: <20251105065012.88796-1-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: 05 Nov 2025 06:50:15.0062 (UTC) FILETIME=[70ADA360:01DC4E20] X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU2PEPF00028D0B:EE_|PA1PR06MB10144:EE_ X-MS-Office365-Filtering-Correlation-Id: 999ef44e-035c-48d1-e022-08de1c3793fa X-SET-LOWER-SCL-SCANNER: YES X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|34020700016|36860700013|376014|1800799024|82310400026; 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X-OriginatorOrg: leica-geosystems.com.cn X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Nov 2025 06:50:16.3252 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 999ef44e-035c-48d1-e022-08de1c3793fa X-MS-Exchange-CrossTenant-Id: 1b16ab3e-b8f6-4fe3-9f3e-2db7fe549f6a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=1b16ab3e-b8f6-4fe3-9f3e-2db7fe549f6a;Ip=[193.8.40.99];Helo=[hexagon.com] X-MS-Exchange-CrossTenant-AuthSource: DU2PEPF00028D0B.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PA1PR06MB10144 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. Reviewed-by: Krzysztof Kozlowski Signed-off-by: LI Qingwu --- 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 61b97e8bc36d..6c4fcefbe25f 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