stm32: ospi: make all clk, dqs, ncs pins configurable

The clk, dqs and ncs pins can be remapped between OSPI instances, but the
driver doesn't support it, yet. Therefore replace hard coded numbers to
device tree optional properties.

Signed-off-by: Samuel Kleiser <s.kleiser@vega.com>

Author: sageve

drivers/flash/flash_stm32_ospi.c

@@ -36,6 +36,9 @@ LOG_MODULE_REGISTER(flash_stm32_ospi, CONFIG_FLASH_LOG_LEVEL);
 		    (_CONCAT(HAL_OSPIM_, DT_STRING_TOKEN(STM32_OSPI_NODE, prop))),	\
 		    ((default_value)))
 
+#define DT_OSPI_PROP_OR(prop, default_value) \
+	DT_PROP_OR(STM32_OSPI_NODE, prop, default_value)
+
 /* Get the base address of the flash from the DTS node */
 #define STM32_OSPI_BASE_ADDRESS DT_INST_REG_ADDR(0)
 
@@ -2094,17 +2097,17 @@ static int flash_stm32_ospi_init(const struct device *dev)
 	OSPIM_CfgTypeDef ospi_mgr_cfg = {0};
 
 	if (dev_data->hospi.Instance == OCTOSPI1) {
-		ospi_mgr_cfg.ClkPort = 1;
-		ospi_mgr_cfg.DQSPort = 1;
-		ospi_mgr_cfg.NCSPort = 1;
+		ospi_mgr_cfg.ClkPort = DT_OSPI_PROP_OR(clk_port, 1);
+		ospi_mgr_cfg.DQSPort = DT_OSPI_PROP_OR(dqs_port, 1);
+		ospi_mgr_cfg.NCSPort = DT_OSPI_PROP_OR(ncs_port, 1);
 		ospi_mgr_cfg.IOLowPort = DT_OSPI_IO_PORT_PROP_OR(io_low_port,
 								 HAL_OSPIM_IOPORT_1_LOW);
 		ospi_mgr_cfg.IOHighPort = DT_OSPI_IO_PORT_PROP_OR(io_high_port,
 								  HAL_OSPIM_IOPORT_1_HIGH);
 	} else if (dev_data->hospi.Instance == OCTOSPI2) {
-		ospi_mgr_cfg.ClkPort = 2;
-		ospi_mgr_cfg.DQSPort = 2;
-		ospi_mgr_cfg.NCSPort = 2;
+		ospi_mgr_cfg.ClkPort = DT_OSPI_PROP_OR(clk_port, 2);
+		ospi_mgr_cfg.DQSPort = DT_OSPI_PROP_OR(dqs_port, 2);
+		ospi_mgr_cfg.NCSPort = DT_OSPI_PROP_OR(ncs_port, 2);
 		ospi_mgr_cfg.IOLowPort = DT_OSPI_IO_PORT_PROP_OR(io_low_port,
 								 HAL_OSPIM_IOPORT_2_LOW);
 		ospi_mgr_cfg.IOHighPort = DT_OSPI_IO_PORT_PROP_OR(io_high_port,

dts/bindings/ospi/st,stm32-ospi.yaml

@@ -119,3 +119,48 @@ properties:
       Note: You might need to enable the OCTOSPI I/O manager clock to use the
             property. Please refer to Reference Manual.
             The clock can be enabled in the devicetree.
+
+  clk-port:
+    type: int
+    enum:
+      - 1
+      - 2
+    description: |
+      Specifies which port of the OCTOSPI IO Manager is used for the clk pin.
+
+      If absent, then n is used where `n` is the OSPI
+      instance number.
+
+      Note: You might need to enable the OCTOSPI I/O manager clock to use the
+            property. Please refer to Reference Manual.
+            The clock can be enabled in the devicetree.
+
+  dqs-port:
+    type: int
+    enum:
+      - 1
+      - 2
+    description: |
+      Specifies which port of the OCTOSPI IO Manager is used for the dqs pin.
+
+      If absent, then n is used where `n` is the OSPI
+      instance number.
+
+      Note: You might need to enable the OCTOSPI I/O manager clock to use the
+            property. Please refer to Reference Manual.
+            The clock can be enabled in the devicetree.
+
+  ncs-port:
+    type: int
+    enum:
+      - 1
+      - 2
+    description: |
+      Specifies which port of the OCTOSPI IO Manager is used for the ncs pin.
+
+      If absent, then n is used where `n` is the OSPI
+      instance number.
+
+      Note: You might need to enable the OCTOSPI I/O manager clock to use the
+            property. Please refer to Reference Manual.
+            The clock can be enabled in the devicetree.