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Sun, 16 Feb 2025 04:29:19 -0500 (EST) From: Ryan Walklin To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland Cc: Andre Przywara , Chris Morgan , Hironori KIKUCHI , Philippe Simons , linux-sunxi@lists.linux.dev, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Ryan Walklin Subject: [PATCH 8/8] arm64: dts: allwinner: rg35xx: Add GPIO backlight control Date: Sun, 16 Feb 2025 22:27:15 +1300 Message-ID: <20250216092827.15444-9-ryan@testtoast.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250216092827.15444-1-ryan@testtoast.com> References: <20250216092827.15444-1-ryan@testtoast.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The LCD backlight for this device can be exposed as a simple GPIO- controlled device. It would be more accurately modelled using PWM to enable brightness control, however the PWM driver design for the H616 is not yet upstreamed. Add a GPIO backlight node to the DTS. Signed-off-by: Ryan Walklin --- .../boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts b/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts index 388487d4720e2..29d1144fc3987 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts +++ b/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts @@ -21,6 +21,12 @@ aliases { serial0 = &uart0; }; + backlight: backlight { + compatible = "gpio-backlight"; + gpios = <&pio 3 28 GPIO_ACTIVE_HIGH>; // PD28 + default-on; + }; + battery: battery { compatible = "simple-battery"; constant-charge-current-max-microamp = <1024000>; -- 2.48.1