stm32f4: Add support for STM32F469XI

Add configuration, dtsi and memory configuration fixup for the
STM32F469XI High Performance SoC.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>

arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.stm32f469xi

@@ -0,0 +1,18 @@
+# Kconfig - ST STM32F469XI MCU configuration options
+#
+# Copyright (c) 2016 Linaro Limited.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+if SOC_STM32F469XI
+
+config SOC
+	string
+	default stm32f469xx
+
+config NUM_IRQS
+	int
+	default 93
+
+endif # SOC_STM32F469XI

arch/arm/soc/st_stm32/stm32f4/Kconfig.soc

@@ -24,6 +24,9 @@ config SOC_STM32F413XH
 config SOC_STM32F429XI
 	bool "STM32F429XI"
 
+config SOC_STM32F469XI
+	bool "STM32F469XI"
+
 endchoice
 
 config STM32_ARM_MPU_ENABLE

arch/arm/soc/st_stm32/stm32f4/arm_mpu_mem_cfg.h

@@ -63,6 +63,10 @@
 #define REGION_SRAM_0_SIZE REGION_128K
 #define REGION_SRAM_1_START 0x20000
 #define REGION_SRAM_1_SIZE REGION_128K
+#elif CONFIG_SRAM_SIZE == 384
+#define REGION_SRAM_0_SIZE REGION_256K
+#define REGION_SRAM_1_START 0x40000
+#define REGION_SRAM_1_SIZE REGION_128K
 #else
 #error "Unsupported configuration"
 #endif

dts/arm/st/mem.h

@@ -36,6 +36,9 @@
 #elif defined(CONFIG_SOC_STM32F429XI)
 #define DT_FLASH_SIZE		__SIZE_K(2048)
 #define DT_SRAM_SIZE		__SIZE_K(256)
+#elif defined(CONFIG_SOC_STM32F469XI)
+#define DT_FLASH_SIZE		__SIZE_K(2048)
+#define DT_SRAM_SIZE		__SIZE_K(384)
 #elif defined(CONFIG_SOC_STM32L475XG)
 #define DT_FLASH_SIZE		__SIZE_K(1024)
 #define DT_SRAM_SIZE		__SIZE_K(96)

dts/arm/st/stm32f469.dtsi

@@ -0,0 +1,7 @@
+/*
+ * Copyright (c) 2017 Linaro Limited
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <st/stm32f4.dtsi>