giga r1: fix memory map for lvgl

Author: leonardocavagnis

variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.conf

@@ -17,11 +17,11 @@ CONFIG_LLEXT_STORAGE_WRITABLE=n
 CONFIG_SHARED_MULTI_HEAP=y
 CONFIG_HEAP_MEM_POOL_SIZE=32768
 CONFIG_MAIN_STACK_SIZE=32768
-CONFIG_LLEXT_HEAP_SIZE=128
+CONFIG_LLEXT_HEAP_SIZE=256
 
 CONFIG_CODE_DATA_RELOCATION=y
 CONFIG_MAIN_STACK_REGION="DTCM"
-CONFIG_LLEXT_HEAP_REGION="SRAM2"
+CONFIG_LLEXT_HEAP_REGION="SRAM1"
 
 CONFIG_LOG_BACKEND_UART=y
 CONFIG_LOG_BACKEND_UART_AUTOSTART=n

variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.overlay

@@ -356,7 +356,7 @@
 		};
 
 		user_sketch: partition@e0000 {
-			reg = <0x0E0000 0x20000>;
+			reg = <0x000E0000 0x00040000>;
 		};
 	};
 };
@@ -550,6 +550,17 @@
 	};
 };
 
+&sram1 {
+	reg = <0x30000000 DT_SIZE_K(256)>;
+};
+
+/delete-node/ &sram2;
+
+&sdram1 {
+	/* Frame buffer memory cache will cause screen flickering. */
+	zephyr,memory-attr = <( DT_MEM_ARM(ATTR_MPU_RAM_NOCACHE) )>;
+};
+
 /* Include common flash filesystem configuration */
 qspi_flash: &n25q128a1 {};
 #include "../common/arduino_flash_fs.dtsi"