drivers: i2c_sedi: Apply DTS clock_frequency to I2C during initialization

Previously, the clock_frequency property defined in the Device Tree was
not applied to the I2C controller, causing the controller to ignore the
specified bitrate configuration if no other config for speed. When using
default hardware settings, the lack of an explicit timing or frequency
config may result in the controller ignoring bitrate settings. This change
ensures that the clock_frequency value from DTS is now correctly mapped
and set during controller initialization, allowing the bitrate to take
effect as intended. This improves hardware configurability and ensures
the I2C bus operates at the desired speed specified in the Device Tree.

Signed-off-by: Xiaolu Sun <[email protected]>

Author: xiaolusu

drivers/i2c/i2c_sedi.c

@@ -11,7 +11,10 @@
 #include <zephyr/kernel.h>
 #include <sedi_driver_i2c.h>
 #include <zephyr/pm/device.h>
+#include <zephyr/logging/log.h>
+LOG_MODULE_REGISTER(i2c_sedi);
 
+#include "i2c-priv.h"
 #define I2C_SEDI_TIMEOUT_MS (1000)
 
 struct i2c_sedi_context {
@@ -21,6 +24,7 @@ struct i2c_sedi_context {
 	struct k_mutex *mutex;
 	int err;
 	uint16_t addr_10bit;
+	uint32_t bitrate;
 };
 
 struct i2c_sedi_config {
@@ -192,6 +196,12 @@ static int i2c_sedi_init(const struct device *dev)
 		return -EIO;
 	}
 
+	ret = i2c_sedi_api_configure(dev,
+			I2C_MODE_CONTROLLER |
+			i2c_map_dt_bitrate(context->bitrate));
+	if (ret != 0) {
+		return -EIO;
+	}
 	config->irq_config(dev);
 
 	return 0;
@@ -213,6 +223,7 @@ static void i2c_sedi_isr(const struct device *dev)
 	static K_MUTEX_DEFINE(i2c_sedi_mutex_##n);                                                 \
 	static struct i2c_sedi_context i2c_sedi_data_##n = {                                       \
 		.sedi_device = DT_INST_PROP(n, peripheral_id),                                     \
+		.bitrate = DT_INST_PROP(n, clock_frequency),					   \
 		.sem = &i2c_sedi_sem_##n,                                                          \
 		.mutex = &i2c_sedi_mutex_##n,                                                      \
 	};                                                                                         \