drivers/flash: STM32: Getting clock settings from DT.

This commit uses DT APIs to get the flash clock settings.

Signed-off-by: Krishna Mohan Dani <[email protected]>

Author: ikmdani

drivers/flash/flash_stm32.c

@@ -348,14 +348,11 @@ flash_stm32_get_parameters(const struct device *dev)
 
 static struct flash_stm32_priv flash_data = {
 	.regs = (FLASH_TypeDef *) DT_INST_REG_ADDR(0),
-#if defined(CONFIG_SOC_SERIES_STM32L4X) || \
-	defined(CONFIG_SOC_SERIES_STM32F0X) || \
-	defined(CONFIG_SOC_SERIES_STM32F1X) || \
-	defined(CONFIG_SOC_SERIES_STM32F3X) || \
-	defined(CONFIG_SOC_SERIES_STM32G0X) || \
-	defined(CONFIG_SOC_SERIES_STM32G4X)
-	.pclken = { .bus = STM32_CLOCK_BUS_AHB1,
-		    .enr = LL_AHB1_GRP1_PERIPH_FLASH },
+#if DT_INST_NODE_HAS_PROP(0, clocks)
+	.pclken = {
+		.enr = DT_INST_CLOCKS_CELL(0, bits),
+		.bus = DT_INST_CLOCKS_CELL(0, bus),
+	}
 #endif
 };
 
@@ -372,17 +369,15 @@ static const struct flash_driver_api flash_stm32_api = {
 static int stm32_flash_init(const struct device *dev)
 {
 	int rc;
-#if defined(CONFIG_SOC_SERIES_STM32L4X) || \
-	defined(CONFIG_SOC_SERIES_STM32F0X) || \
-	defined(CONFIG_SOC_SERIES_STM32F1X) || \
-	defined(CONFIG_SOC_SERIES_STM32F3X) || \
-	defined(CONFIG_SOC_SERIES_STM32G0X)
+	/* Below is applicable to L4, F0, F1, F3, G0*/
+#if DT_INST_NODE_HAS_PROP(0, clocks)
 	struct flash_stm32_priv *p = FLASH_STM32_PRIV(dev);
 	const struct device *clk = DEVICE_DT_GET(STM32_CLOCK_CONTROL_NODE);
 
 	/*
 	 * On STM32F0, Flash interface clock source is always HSI,
 	 * so statically enable HSI here.
+	 * Below is applicable to F0, F1 and F3 as HSI is the source
 	 */
 #if defined(CONFIG_SOC_SERIES_STM32F0X) || \
 	defined(CONFIG_SOC_SERIES_STM32F1X) || \

drivers/flash/flash_stm32.h

@@ -8,26 +8,14 @@
 #ifndef ZEPHYR_DRIVERS_FLASH_FLASH_STM32_H_
 #define ZEPHYR_DRIVERS_FLASH_FLASH_STM32_H_
 
-#if defined(CONFIG_SOC_SERIES_STM32L4X) || \
-	defined(CONFIG_SOC_SERIES_STM32F0X) || \
-	defined(CONFIG_SOC_SERIES_STM32F1X) || \
-	defined(CONFIG_SOC_SERIES_STM32F3X) || \
-	defined(CONFIG_SOC_SERIES_STM32G0X) || \
-	defined(CONFIG_SOC_SERIES_STM32G4X) || \
-	defined(CONFIG_SOC_SERIES_STM32H7X)
+#if DT_NODE_HAS_PROP(DT_INST(0, st_stm32_flash_controller), clocks)
 #include <drivers/clock_control.h>
 #include <drivers/clock_control/stm32_clock_control.h>
 #endif
 
 struct flash_stm32_priv {
 	FLASH_TypeDef *regs;
-#if defined(CONFIG_SOC_SERIES_STM32L4X) || \
-	defined(CONFIG_SOC_SERIES_STM32F0X) || \
-	defined(CONFIG_SOC_SERIES_STM32F1X) || \
-	defined(CONFIG_SOC_SERIES_STM32F3X) || \
-	defined(CONFIG_SOC_SERIES_STM32G0X) || \
-	defined(CONFIG_SOC_SERIES_STM32G4X) || \
-	defined(CONFIG_SOC_SERIES_STM32H7X)
+#if DT_NODE_HAS_PROP(DT_INST(0, st_stm32_flash_controller), clocks)
 	/* clock subsystem driving this peripheral */
 	struct stm32_pclken pclken;
 #endif