diff --git a/drivers/i2c/busses/i2c-rtl9300.c b/drivers/i2c/busses/i2c-rtl9300.c
index 16af49ccd1dd..b718b74afe0d 100644
--- a/drivers/i2c/busses/i2c-rtl9300.c
+++ b/drivers/i2c/busses/i2c-rtl9300.c
@@ -65,6 +65,9 @@ enum rtl9300_i2c_reg_fields {
 struct rtl9300_i2c_drv_data {
 	struct rtl9300_i2c_reg_field field_desc[F_NUM_FIELDS];
 	int (*select_scl)(struct rtl9300_i2c *i2c, u8 scl);
+	int (*config_chan)(struct rtl9300_i2c *i2c, struct rtl9300_i2c_chan *chan);
+	void (*config_clock)(u32 clock_freq, struct rtl9300_i2c_chan *chan);
+	int (*misc_init)(struct rtl9300_i2c *i2c);
 	u32 rd_reg;
 	u32 wd_reg;
 	u8 max_nchan;
@@ -175,6 +178,30 @@ static int rtl9300_i2c_config_chan(struct rtl9300_i2c *i2c, struct rtl9300_i2c_c
 	return 0;
 }
 
+static void rtl9300_i2c_config_clock(u32 clock_freq, struct rtl9300_i2c_chan *chan)
+{
+	struct rtl9300_i2c *i2c = chan->i2c;
+
+	switch (clock_freq) {
+	case I2C_MAX_STANDARD_MODE_FREQ:
+		chan->bus_freq = RTL9300_I2C_STD_FREQ;
+		break;
+	case I2C_MAX_FAST_MODE_FREQ:
+		chan->bus_freq = RTL9300_I2C_FAST_FREQ;
+		break;
+	case RTL9300_I2C_MAX_SUPER_FAST_FREQ:
+		chan->bus_freq = RTL9300_I2C_SUPER_FAST_FREQ;
+		break;
+	case RTL9300_I2C_MAX_SLOW_FREQ:
+		chan->bus_freq = RTL9300_I2C_SLOW_FREQ;
+		break;
+	default:
+		dev_warn(i2c->dev, "SDA%d clock-frequency %d not supported using default\n",
+			 chan->sda_num, clock_freq);
+		break;
+	}
+}
+
 static int rtl9300_i2c_read(struct rtl9300_i2c *i2c, u8 *buf, u8 len)
 {
 	u32 vals[4] = {};
@@ -322,7 +349,7 @@ static int rtl9300_i2c_smbus_xfer(struct i2c_adapter *adap, u16 addr, unsigned s
 	guard(rtl9300_i2c)(i2c);
 
 	drv_data = device_get_match_data(i2c->dev);
-	ret = rtl9300_i2c_config_chan(i2c, chan);
+	ret = drv_data->config_chan(i2c, chan);
 	if (ret)
 		return ret;
 
@@ -389,6 +416,12 @@ static struct i2c_adapter_quirks rtl9300_i2c_quirks = {
 	.max_write_len	= 16,
 };
 
+static int rtl9300_i2c_init(struct rtl9300_i2c *i2c)
+{
+	/* only use standard read format */
+	return regmap_field_write(i2c->fields[F_RD_MODE], 0);
+}
+
 static int rtl9300_i2c_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -453,27 +486,11 @@ static int rtl9300_i2c_probe(struct platform_device *pdev)
 		if (ret)
 			clock_freq = I2C_MAX_STANDARD_MODE_FREQ;
 
-		switch (clock_freq) {
-		case I2C_MAX_STANDARD_MODE_FREQ:
-			chan->bus_freq = RTL9300_I2C_STD_FREQ;
-			break;
-		case I2C_MAX_FAST_MODE_FREQ:
-			chan->bus_freq = RTL9300_I2C_FAST_FREQ;
-			break;
-		case RTL9300_I2C_MAX_SUPER_FAST_FREQ:
-			chan->bus_freq = RTL9300_I2C_SUPER_FAST_FREQ;
-			break;
-		case RTL9300_I2C_MAX_SLOW_FREQ:
-			chan->bus_freq = RTL9300_I2C_SLOW_FREQ;
-			break;
-		default:
-			dev_warn(i2c->dev, "SDA%d clock-frequency %d not supported using default\n",
-				 sda_num, clock_freq);
-			break;
-		}
-
 		chan->sda_num = sda_num;
 		chan->i2c = i2c;
+
+		drv_data->config_clock(clock_freq, chan);
+
 		adap = &i2c->chans[i].adap;
 		adap->owner = THIS_MODULE;
 		adap->algo = &rtl9300_i2c_algo;
@@ -491,8 +508,7 @@ static int rtl9300_i2c_probe(struct platform_device *pdev)
 	}
 	i2c->sda_num = 0xff;
 
-	/* only use standard read format */
-	ret = regmap_field_write(i2c->fields[F_RD_MODE], 0);
+	ret = drv_data->misc_init(i2c);
 	if (ret)
 		return ret;
 
@@ -521,6 +537,9 @@ static const struct rtl9300_i2c_drv_data rtl9300_i2c_drv_data = {
 		[F_BUSY]		= MST_REG_FIELD(RTL9300_I2C_MST_CTRL1, 0, 0),
 	},
 	.select_scl = rtl9300_i2c_select_scl,
+	.config_chan = rtl9300_i2c_config_chan,
+	.config_clock = rtl9300_i2c_config_clock,
+	.misc_init = rtl9300_i2c_init,
 	.rd_reg = RTL9300_I2C_MST_DATA_WORD0,
 	.wd_reg = RTL9300_I2C_MST_DATA_WORD0,
 	.max_nchan = RTL9300_I2C_MUX_NCHAN,
@@ -545,6 +564,9 @@ static const struct rtl9300_i2c_drv_data rtl9310_i2c_drv_data = {
 		[F_BUSY]		= MST_REG_FIELD(RTL9310_I2C_MST_CTRL, 0, 0),
 	},
 	.select_scl = rtl9310_i2c_select_scl,
+	.config_chan = rtl9300_i2c_config_chan,
+	.config_clock = rtl9300_i2c_config_clock,
+	.misc_init = rtl9300_i2c_init,
 	.rd_reg = RTL9310_I2C_MST_DATA_CTRL,
 	.wd_reg = RTL9310_I2C_MST_DATA_CTRL,
 	.max_nchan = RTL9310_I2C_MUX_NCHAN,