[PATCH 08/12] arm64: dts: st: add ltdc support on stm32mp251

Raphael Gallais-Pou raphael.gallais-pou at foss.st.com
Fri Jul 25 03:04:00 PDT 2025


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 at foss.st.com>
---
 arch/arm64/boot/dts/st/stm32mp251.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi
index 8d87865850a7a6e8095c36acdef83c8e3a73ae54..9698170547c13ca17f032dd714dd4d7290a9b0e2 100644
--- a/arch/arm64/boot/dts/st/stm32mp251.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi
@@ -1052,6 +1052,18 @@ dcmipp: dcmipp at 48030000 {
 				status = "disabled";
 			};
 
+			ltdc: display-controller at 48010000 {
+				compatible = "st,stm32mp25-ltdc";
+				reg = <0x48010000 0x400>;
+				interrupts = <GIC_SPI 158 IRQ_TYPE_LEVEL_HIGH>,
+					<GIC_SPI 159 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&rcc CK_BUS_LTDC>, <&rcc CK_KER_LTDC>;
+				clock-names = "bus", "lcd";
+				resets = <&rcc LTDC_R>;
+				access-controllers = <&rifsc 80>;
+				status = "disabled";
+			};
+
 			combophy: phy at 480c0000 {
 				compatible = "st,stm32mp25-combophy";
 				reg = <0x480c0000 0x1000>;

-- 
2.25.1




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