From nobody Wed Dec 17 21:14:00 2025 Received: from mail-pl1-f172.google.com (mail-pl1-f172.google.com [209.85.214.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 01A3528D8DB for ; Sun, 5 Oct 2025 15:34:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759678485; cv=none; b=UyiE2VmG0Cq9zYI9M0iGiZqIZOwZbm8lkVdvVuNPjAY5WolcNX4XLzZmes5g1YmKYjWA6tEsYcgPvc7wa8HbeJ2Jlri4XR0gAfX5VXqWwVFJdBGb5CaaA5uTf2SiYGO3CoHLr/wovmhk7y2mjvWKlVzRaG/3oIq4srRA4QDBdK8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759678485; c=relaxed/simple; bh=98caJkQZ0MiAzC2fQEY27b92eOKFqM0zqIcXCKa8xZs=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=CNsjA+w/LIAAFZvn44JCq+cp2X8lRmV+owe+d5SB0NcFLfaD9/2W0nszY3Gd0qRQ8WR27tXKspucsXHshnA7GZfK0QFDqy47A26U5smXeJTrLgd0ah8lVWkALs0rMoxJ2dQ8dRpozeuobEa7+TG7I+vbna+aCC0FiRbeAvGiN8g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=QECSqFm1; arc=none smtp.client-ip=209.85.214.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="QECSqFm1" Received: by mail-pl1-f172.google.com with SMTP id d9443c01a7336-27edcbcd158so51955775ad.3 for ; Sun, 05 Oct 2025 08:34:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1759678483; x=1760283283; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=2X6o/MRuCTc+0p6F+rhXe+4gejxskim5+wROeJzq1wc=; b=QECSqFm1VriYQk9c4gdRFpoXTZrIpcg0XT0Ho+gFVzfeDvVJCdvDP3drUdRBwMQHMX C7iZxGnt9UgpNnwbUnjv9IsJwyGo44Y8A0k4zFXSayf582/buLa/9kwCB9I5HPZkzwHH Ybr9y2UQ+H2jNf9LNVdbeavqVjrEVJmW3TFe0rWZ+HhwNr8iQLaeWmVfWnUpE0Y0CtN/ 2fbdxiE5awu2BIPYJY3A2UW9RB4MzTmNltt7I+d6NNe1yHYyqIjYFQNfEFlQEAQV3bl1 hLqZPwjuJc2BJCg40lSMJmVop0dIhlPSvpiEPu6uRpMbisHfMl4HJg7+JvcaDowF5j+F KV+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1759678483; x=1760283283; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=2X6o/MRuCTc+0p6F+rhXe+4gejxskim5+wROeJzq1wc=; b=kd+gGQ9mlf2mAGk85dUrJYeZjnF80gbFW7mZXBV/dmIHRoM6KO6aqj3UMoCqZWtAWT WhYOlgw41Ijf0ZCLQtIKGkE87jDZOHMTl91I1X1m64UfTAC8QA7UEt+Wn8gcfkjFAj2W pT9K8QYqYYB0laB0xQG5vuvlrYyEsS+i+zxhK4Af0EczJDUSRgw/cI62Pzb4SivEqLSW eKy2rYUk2gPTGBTnHSi8oIKiEEWhzqonuSivCXbe8jVmPaXXXWVcK1LlyZsU9dTMpQF9 1UUrQza4Ojc4P0dPPxtmk5ol5qrCXmE3yuvqf/g37/h1wdAHnLgdCEcXfl1UGnjKEMBP 6Wcw== X-Forwarded-Encrypted: i=1; AJvYcCWD9z9hTRFLWOXulUv0aFfMahIe5EhgUXNlP/U5JInexphre5VSBP1dCPp/mCu3R4Hn9ZGy+HBrPQZuIlc=@vger.kernel.org X-Gm-Message-State: AOJu0YzHQb4hRc1yvC6gyNOuye/MLk3wKVSukZNHCMd9jcDvlEfQXoIQ ST+6Ivz1IvSiF0nMT51lIWcBjYZKfamRtTAoO94wwN8qw11qyr65FsXw X-Gm-Gg: ASbGncvh/yFtOP3cFMMyHfaljQPunG+sYnXqv6nZXBnwFDUHQNCEsdIfHcP7GQaeF1h gtzlEny4/qaV39FsauuITLtpSM2xM0xFliGUP6mSb/ZZbPgtdVXNw1sCWAjbSEk6JeodXI+ToZQ MnSZz3pXkTYSfTLg1R3AK81pWgbptRV6lJUsfGs1b0P4gIT6GonVf87RVNqqTzJfiDU7p0bXKSr gXWb4JVmPgliKef6BVyvvB8kIGGNvtSmxeqy0M/HmcHw8jEdzvindICy5ETt/mGkvO7xbotcwEO TatoOcNWIfhDsZpqOwJuYpFP775SY1L4CEqVJP5LDEQSVt5J0HZsxE1skJBdJV9MogLHhTs4qTT nz5vKbEG7+q0MxzhCPF7OzHGlN9Nn5WQRgt3lko5snkcIkPgWBKvlWLdxRgOFjXlVRg== X-Google-Smtp-Source: AGHT+IGOOTrBzPFcXT/L1Z9eJjafTeBHYh5acgbfBjUTIl/XV5J6IgoIQc+d+NUDca8jIPHpHj7Nlw== X-Received: by 2002:a17:902:ce88:b0:28d:18d3:46cb with SMTP id d9443c01a7336-28e9a54660fmr118836165ad.20.1759678483159; Sun, 05 Oct 2025 08:34:43 -0700 (PDT) Received: from DESKTOP-P76LG1N.lan ([58.187.66.63]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-28e8d110d9csm105555965ad.2.2025.10.05.08.34.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Oct 2025 08:34:42 -0700 (PDT) From: Nam Tran To: lee@kernel.org Cc: pavel@kernel.org, gregkh@linuxfoundation.org, rdunlap@infradead.org, christophe.jaillet@wanadoo.fr, krzk+dt@kernel.org, robh@kernel.org, conor+dt@kernel.org, corbet@lwn.net, linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, Nam Tran Subject: [PATCH v15 3/3] docs: leds: Document TI LP5812 LED driver Date: Sun, 5 Oct 2025 22:33:37 +0700 Message-Id: <20251005153337.94025-4-trannamatk@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20251005153337.94025-1-trannamatk@gmail.com> References: <20251005153337.94025-1-trannamatk@gmail.com> 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 Content-Type: text/plain; charset="utf-8" The driver provides sysfs interfaces to control and configure the LP5812 device and its LED channels. The documetation describes the chip's capabilities, sysfs interface, and usage examples. Signed-off-by: Nam Tran --- Documentation/leds/index.rst | 1 + Documentation/leds/leds-lp5812.rst | 50 ++++++++++++++++++++++++++++++ MAINTAINERS | 1 + 3 files changed, 52 insertions(+) create mode 100644 Documentation/leds/leds-lp5812.rst diff --git a/Documentation/leds/index.rst b/Documentation/leds/index.rst index 76fae171039c..bebf44004278 100644 --- a/Documentation/leds/index.rst +++ b/Documentation/leds/index.rst @@ -25,6 +25,7 @@ LEDs leds-lp5523 leds-lp5562 leds-lp55xx + leds-lp5812 leds-mlxcpld leds-mt6370-rgb leds-sc27xx diff --git a/Documentation/leds/leds-lp5812.rst b/Documentation/leds/leds-l= p5812.rst new file mode 100644 index 000000000000..4c22d9a79d14 --- /dev/null +++ b/Documentation/leds/leds-lp5812.rst @@ -0,0 +1,50 @@ +.. SPDX-License-Identifier: GPL-2.0 + +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D +Kernel driver for lp5812 +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + +* TI/National Semiconductor LP5812 LED Driver +* Datasheet: https://www.ti.com/product/LP5812#tech-docs + +Authors: Jared Zhou + +Description +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + +The LP5812 is a 4x3 matrix LED driver with support for both manual and +autonomous animation control. This driver provides sysfs interfaces to +control and configure the LP5812 device and its LED channels. + +Sysfs Interface +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + +This driver uses the standard multicolor LED class interfaces defined +in `Documentation/ABI/testing/sysfs-class-led-multicolor`. + +Each LP5812 LED output appears under ``/sys/class/leds/`` with its +assigned label (for example ``LED_A``). + +The following attributes are exposed: + - multi_intensity: Per-channel RGB intensity control. + - brightness: Standard brightness control (0-255) + +Autonomous Control Modes +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + +The driver also supports autonomous control through pattern configuration +(e.g., direct, tcmscan, or mixscan modes) defined in the device tree. +When configured, the LP5812 can generate transitions and color effects +without CPU intervention. + +Refer to the device tree binding document for valid mode strings and +configuration examples. + +Example Usage +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + +To control LED_A:: + # Set RGB intensity (R=3D50, G=3D50, B=3D50) + echo 50 50 50 > /sys/class/leds/LED_A/multi_intensity + # Set overall brightness to maximum + echo 255 > /sys/class/leds/LED_A/brightness diff --git a/MAINTAINERS b/MAINTAINERS index 7a3808d8d624..4d625dabde72 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -25388,6 +25388,7 @@ M: Nam Tran L: linux-leds@vger.kernel.org S: Maintained F: Documentation/devicetree/bindings/leds/ti,lp5812.yaml +F: Documentation/leds/leds-lp5812.rst F: drivers/leds/rgb/Kconfig F: drivers/leds/rgb/Makefile F: drivers/leds/rgb/leds-lp5812.c --=20 2.25.1