RT72064. stm3220g-eval: configuration for 16MB STM-MEM ext RAM

Signed-off-by: Yuri Tikhonov <yur@emcraft.com>

board/stm/stm3220g-eval/board.c

@@ -130,7 +130,8 @@ int dram_init(void)
 	int	rv = 0;
 
 #if (CONFIG_NR_DRAM_BANKS > 0)
-	int	i;
+	static struct stm32f2_gpio_dsc	ctrl_gpio = {8, 8};
+	int				i;
 
 	/*
 	 * Connect GPIOs to FSMC controller
@@ -164,6 +165,20 @@ int dram_init(void)
 	STM32_FSMC->wt[i].wtr = CONFIG_SYS_FSMC_BWR;
 #endif
 
+#if defined(CONFIG_SYS_RAM_BURST)
+	/*
+	 * TBD
+	 */
+#else
+	/*
+	 * Switch PSRAM in the Asyncronous Read/Write Mode
+	 */
+	rv = stm32f2_gpio_config(&ctrl_gpio, STM32F2_GPIO_ROLE_GPOUT);
+	if (rv != 0)
+		goto out;
+	stm32f2_gpout_set(&ctrl_gpio, 0);
+#endif /* CONFIG_SYS_RAM_BURST */
+
 	/*
 	 * Fill in global info with description of SRAM configuration
 	 */

include/configs/stm3220g-eval.h

@@ -111,15 +111,16 @@
 #define CONFIG_SYS_MALLOC_LEN		CONFIG_MEM_MALLOC_LEN
 
 /*
- * Configuration of the external memory:
- * 2MB SRAM connected to CS2 of Bank1 (NOR/PSRAM)
+ * Configuration of the external memory
  */
 #define CONFIG_NR_DRAM_BANKS		1
-#define CONFIG_SYS_RAM_SIZE		(2 * 1024 * 1024)
+#define CONFIG_SYS_RAM_SIZE		(16 * 1024 * 1024)
 #define CONFIG_SYS_RAM_CS		2
-#define CONFIG_SYS_FSMC_BCR		0x00001011
-#define CONFIG_SYS_FSMC_BTR		0x00010200
-#undef  CONFIG_SYS_FSMC_BWR
+
+#undef CONFIG_SYS_RAM_BURST
+#define CONFIG_SYS_FSMC_BCR		0x00005059
+#define CONFIG_SYS_FSMC_BTR		0x100106F2
+#define CONFIG_SYS_FSMC_BWR		0x100107F2
 
 #define CONFIG_SYS_RAM_BASE		(0x60000000 + \
 					 ((CONFIG_SYS_RAM_CS - 1) * 0x4000000))