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([103.218.174.23]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-34f476fab12sm5631951a91.5.2026.01.05.00.51.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Jan 2026 00:51:27 -0800 (PST) From: Sudarshan Shetty To: lee@kernel.org, danielt@kernel.org, jingoohan1@gmail.com Cc: deller@gmx.de, pavel@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Sudarshan Shetty Subject: [PATCH v1 0/2] backlight: gpio-backlight: Add support for multiple GPIOs Date: Mon, 5 Jan 2026 14:21:18 +0530 Message-Id: <20260105085120.230862-1-tessolveupstream@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi all, This patch extends the gpio-backlight driver and its Device Tree bindings to support multiple GPIOs for controlling a single backlight device. Some panels require more than one GPIO to enable or disable the backlight, and previously the driver only supported a single GPIO. With this change: - The driver now handles an array of GPIOs and updates all of them based on brightness state. - The Device Tree binding has been updated to allow specifying 1 or 2 GPIOs for a backlight node. This approach avoids describing multiple backlight devices in DT for a single panel. Thanks, Anusha Sudarshan Shetty (2): dt-bindings: backlight: gpio-backlight: allow multiple GPIOs backlight: gpio: add support for multiple GPIOs for backlight control .../leds/backlight/gpio-backlight.yaml | 12 +++- drivers/video/backlight/gpio_backlight.c | 61 ++++++++++++++----- 2 files changed, 56 insertions(+), 17 deletions(-) -- 2.34.1