From: Ryan Walklin <ryan@testtoast.com>
To: Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Samuel Holland <samuel@sholland.org>
Cc: Andre Przywara <andre.przywara@arm.com>,
Chris Morgan <macroalpha82@gmail.com>,
Hironori KIKUCHI <kikuchan98@gmail.com>,
Philippe Simons <simons.philippe@gmail.com>,
linux-sunxi@lists.linux.dev, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Ryan Walklin <ryan@testtoast.com>
Subject: [PATCH 8/8] arm64: dts: allwinner: rg35xx: Add GPIO backlight control
Date: Sun, 16 Feb 2025 22:27:15 +1300 [thread overview]
Message-ID: <20250216092827.15444-9-ryan@testtoast.com> (raw)
In-Reply-To: <20250216092827.15444-1-ryan@testtoast.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>
---
.../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
next prev parent reply other threads:[~2025-02-16 9:57 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-16 9:27 [PATCH 0/8] arm64: dts: allwinner: h616: add LCD timing controller and display engine support Ryan Walklin
2025-02-16 9:27 ` [PATCH 1/8] bus: sun50i: add DE33 compatible string to the DE2 bus driver Ryan Walklin
2025-02-22 9:35 ` Jernej Škrabec
2025-02-22 23:38 ` Ryan Walklin
2025-02-16 9:27 ` [PATCH 2/8] arm64: dts: allwinner: h616: add display engine, bus and mixer nodes Ryan Walklin
2025-02-24 18:00 ` Andre Przywara
2025-02-16 9:27 ` [PATCH 3/8] dt-bindings: allwinner: Add TCON_TOP and TCON_LCD clock/reset defines Ryan Walklin
2025-02-19 23:11 ` Rob Herring (Arm)
2025-02-16 9:27 ` [PATCH 4/8] drm/sun4i: tcon: Add support for R40 LCD Ryan Walklin
2025-02-16 9:27 ` [PATCH 5/8] arm64: dts: allwinner: h616: Add TCON nodes to H616 DTSI Ryan Walklin
2025-02-22 9:45 ` Jernej Škrabec
2025-02-22 23:39 ` Ryan Walklin
2025-02-16 9:27 ` [PATCH 6/8] arm64: dts: allwinner: h616: add LCD, LVDS and PWM pins Ryan Walklin
2025-02-22 9:48 ` Jernej Škrabec
2025-02-22 23:40 ` Ryan Walklin
2025-02-16 9:27 ` [PATCH 7/8] arm64: dts: allwinner: rg35xx: Enable LCD output Ryan Walklin
2025-02-22 9:46 ` Jernej Škrabec
2025-02-16 9:27 ` Ryan Walklin [this message]
2025-02-17 8:13 ` [PATCH 8/8] arm64: dts: allwinner: rg35xx: Add GPIO backlight control Philippe Simons
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