From: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
Date: Tue, 10 Feb 2026 10:03:55 +0000 (+0100)
Subject: arm64: dts: st: add ltdc support on stm32mp231
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e12becdf89d9d56314d043026c4704b0960571bb;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: st: add ltdc support on stm32mp231

The LCD-TFT Display Controller (LTDC) handles display composition,
scaling and rotation.  It provides a parallel digital RGB flow to be
used by display interfaces.

Add the LTDC node.

Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
Link: https://lore.kernel.org/r/20260210-display-v2-2-0592bd514958@foss.st.com
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
---

diff --git a/arch/arm64/boot/dts/st/stm32mp231.dtsi b/arch/arm64/boot/dts/st/stm32mp231.dtsi
index 1121dca7880fd..03c71a403f138 100644
--- a/arch/arm64/boot/dts/st/stm32mp231.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp231.dtsi
@@ -1197,6 +1197,18 @@
 				<&intc GIC_SPI 213 IRQ_TYPE_LEVEL_HIGH>;	/* EXTI_70 */
 		};
 
+		ltdc: display-controller@48010000 {
+			compatible = "st,stm32mp251-ltdc";
+			reg = <0x48010000 0x400>;
+			interrupts = <GIC_SPI 158 IRQ_TYPE_LEVEL_HIGH>,
+				<GIC_SPI 159 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&rcc CK_KER_LTDC>, <&rcc CK_BUS_LTDC>;
+			clock-names = "lcd", "bus";
+			resets = <&rcc LTDC_R>;
+			access-controllers = <&rifsc 80>;
+			status = "disabled";
+		};
+
 		intc: interrupt-controller@4ac10000 {
 			compatible = "arm,gic-400";
 			reg = <0x4ac10000 0x1000>,