drivers: flash: stm32 xspi: early init exit for memmap mode

Exit the init earlier when XSPI is in memory map mode. Avoid
unnecessary checks and prevent pin reconfiguration that might
cause line spikes. Clock check beforehand is preserved.

Remove '\n' from the LOG_DBG string.

Signed-off-by: Georgij Cernysiov <[email protected]>

Author: GeorgeCGV

drivers/flash/flash_stm32_xspi.c

@@ -2019,6 +2019,21 @@ static int flash_stm32_xspi_init(const struct device *dev)
 	uint32_t prescaler = STM32_XSPI_CLOCK_PRESCALER_MIN;
 	int ret;
 
+	if (!device_is_ready(DEVICE_DT_GET(STM32_CLOCK_CONTROL_NODE))) {
+		LOG_ERR("clock control device not ready");
+		return -ENODEV;
+	}
+
+#ifdef CONFIG_STM32_MEMMAP
+	/* If MemoryMapped then configure skip init */
+	if (stm32_xspi_is_memorymap(dev)) {
+		LOG_DBG("NOR init'd in MemMapped mode");
+		/* Force HAL instance in correct state */
+		dev_data->hxspi.State = HAL_XSPI_STATE_BUSY_MEM_MAPPED;
+		return 0;
+	}
+#endif /* CONFIG_STM32_MEMMAP */
+
 	/* The SPI/DTR is not a valid config of data_mode/data_rate according to the DTS */
 	if ((dev_cfg->data_mode != XSPI_OCTO_MODE)
 		&& (dev_cfg->data_rate == XSPI_DTR_TRANSFER)) {
@@ -2034,21 +2049,6 @@ static int flash_stm32_xspi_init(const struct device *dev)
 		return ret;
 	}
 
-	if (!device_is_ready(DEVICE_DT_GET(STM32_CLOCK_CONTROL_NODE))) {
-		LOG_ERR("clock control device not ready");
-		return -ENODEV;
-	}
-
-#ifdef CONFIG_STM32_MEMMAP
-	/* If MemoryMapped then configure skip init */
-	if (stm32_xspi_is_memorymap(dev)) {
-		LOG_DBG("NOR init'd in MemMapped mode\n");
-		/* Force HAL instance in correct state */
-		dev_data->hxspi.State = HAL_XSPI_STATE_BUSY_MEM_MAPPED;
-		return 0;
-	}
-#endif /* CONFIG_STM32_MEMMAP */
-
 	if (dev_cfg->pclk_len > 3) {
 		/* Max 3 domain clock are expected */
 		LOG_ERR("Could not select %d XSPI domain clock", dev_cfg->pclk_len);