[PATCH 07/10] ARM: dts: stm32: add ltdc support on stm32f746 MCU

Dario Binacchi dario.binacchi at amarulasolutions.com
Sun Sep 3 22:48:46 CEST 2023


The patch applies the changes from Linux commit 008ef8b3a1a00 ("Add LTDC
(Lcd-tft Display Controller) support") and removes the same settings
from stm32f746-disco-u-boot.dtsi.

Signed-off-by: Dario Binacchi <dario.binacchi at amarulasolutions.com>
---

 arch/arm/dts/stm32f746-disco-u-boot.dtsi | 18 ++++++------------
 arch/arm/dts/stm32f746.dtsi              | 10 ++++++++++
 2 files changed, 16 insertions(+), 12 deletions(-)

diff --git a/arch/arm/dts/stm32f746-disco-u-boot.dtsi b/arch/arm/dts/stm32f746-disco-u-boot.dtsi
index 522cffb1ac9f..3c2b9fc59512 100644
--- a/arch/arm/dts/stm32f746-disco-u-boot.dtsi
+++ b/arch/arm/dts/stm32f746-disco-u-boot.dtsi
@@ -63,19 +63,13 @@
 			};
 		};
 	};
+};
 
-	soc {
-		ltdc: display-controller at 40016800 {
-			compatible = "st,stm32-ltdc";
-			reg = <0x40016800 0x200>;
-			resets = <&rcc STM32F7_APB2_RESET(LTDC)>;
-			clocks = <&rcc 0 STM32F7_APB2_CLOCK(LTDC)>;
-			pinctrl-0 = <&ltdc_pins>;
-
-			status = "okay";
-			bootph-all;
-		};
-	};
+&ltdc {
+	clocks = <&rcc 0 STM32F7_APB2_CLOCK(LTDC)>;
+	pinctrl-0 = <&ltdc_pins>;
+	status = "okay";
+	bootph-all;
 };
 
 &fmc {
diff --git a/arch/arm/dts/stm32f746.dtsi b/arch/arm/dts/stm32f746.dtsi
index 7b4bd805c998..79dad3192e15 100644
--- a/arch/arm/dts/stm32f746.dtsi
+++ b/arch/arm/dts/stm32f746.dtsi
@@ -518,6 +518,16 @@
 			};
 		};
 
+		ltdc: display-controller at 40016800 {
+			compatible = "st,stm32-ltdc";
+			reg = <0x40016800 0x200>;
+			interrupts = <88>, <89>;
+			resets = <&rcc STM32F7_APB2_RESET(LTDC)>;
+			clocks = <&rcc 1 CLK_LCD>;
+			clock-names = "lcd";
+			status = "disabled";
+		};
+
 		pwrcfg: power-config at 40007000 {
 			compatible = "st,stm32-power-config", "syscon";
 			reg = <0x40007000 0x400>;
-- 
2.34.1



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