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Wed, 07 May 2025 13:22:44 -0700 (PDT) Received: from localhost.localdomain ([2600:1700:fb0:1bcf:e46c:46ba:cecd:a52c]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-732109df2dcsm725945a34.9.2025.05.07.13.22.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 May 2025 13:22:44 -0700 (PDT) From: Chris Morgan To: linux-sunxi@lists.linux.dev Cc: devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, ryan@testtoast.com, macromorgan@hotmail.com, p.zabel@pengutronix.de, tzimmermann@suse.de, maarten.lankhorst@linux.intel.com, simona@ffwll.ch, airlied@gmail.com, mripard@kernel.org, samuel@sholland.org, jernej.skrabec@gmail.com, wens@csie.org, conor+dt@kernel.org, krzk+dt@kernel.org, robh@kernel.org Subject: [PATCH V9 23/24] arm64: dts: allwinner: rg35xx: Add GPIO backlight control Date: Wed, 7 May 2025 15:19:42 -0500 Message-ID: <20250507201943.330111-24-macroalpha82@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250507201943.330111-1-macroalpha82@gmail.com> References: <20250507201943.330111-1-macroalpha82@gmail.com> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Status: O From: Chris Morgan 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 Signed-off-by: Chris Morgan --- .../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 7e17ca07892d..95f2ae04bd95 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>;