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From: Chris Morgan <macroalpha82@gmail.com>
To: linux-sunxi@lists.linux.dev
Cc: devicetree@vger.kernel.org,
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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>
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| Series |
drm: sun4i: add Display Engine 3.3 (DE33) support
|
|
Commit Message
Chris Morgan
May 7, 2025, 8:19 p.m. UTC
From: Chris Morgan <macromorgan@hotmail.com> 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 <ryan@testtoast.com> Signed-off-by: Chris Morgan <macromorgan@hotmail.com> --- .../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>;