diff --git a/drivers/i2c/busses/i2c-rtl9300.c b/drivers/i2c/busses/i2c-rtl9300.c
index 2cada6038b44..e40b4692a3fa 100644
--- a/drivers/i2c/busses/i2c-rtl9300.c
+++ b/drivers/i2c/busses/i2c-rtl9300.c
@@ -53,6 +53,7 @@ enum rtl9300_i2c_reg_fields {
 	F_SCL_SEL,
 	F_SDA_OUT_SEL,
 	F_SDA_SEL,
+	F_BUSY,
 
 	/* keep last */
 	F_NUM_FIELDS
@@ -262,7 +263,7 @@ static int rtl9300_i2c_do_xfer(struct rtl9300_i2c *i2c, struct rtl9300_i2c_xfer
 	if (ret)
 		return ret;
 
-	ret = regmap_field_read_poll_timeout(i2c->fields[F_I2C_TRIG], val, !val, 100, 100000);
+	ret = regmap_field_read_poll_timeout(i2c->fields[F_BUSY], val, !val, 100, 100000);
 	if (ret)
 		return ret;
 
@@ -505,6 +506,7 @@ static const struct rtl9300_i2c_drv_data rtl9300_i2c_drv_data = {
 		[F_MEM_ADDR_WIDTH]	= MST_REG_FIELD(RTL9300_I2C_MST_CTRL2, 2, 3),
 		[F_SCL_FREQ]		= MST_REG_FIELD(RTL9300_I2C_MST_CTRL2, 0, 1),
 		[F_SDA_SEL]		= GLB_REG_FIELD(RTL9300_I2C_MST_GLB_CTRL, 0, 7),
+		[F_BUSY]		= MST_REG_FIELD(RTL9300_I2C_MST_CTRL1, 0, 0),
 	},
 	.select_scl = rtl9300_i2c_select_scl,
 	.rd_reg = RTL9300_I2C_MST_DATA_WORD0,
@@ -527,6 +529,7 @@ static const struct rtl9300_i2c_drv_data rtl9310_i2c_drv_data = {
 		[F_I2C_FAIL]		= MST_REG_FIELD(RTL9310_I2C_MST_CTRL, 1, 1),
 		[F_I2C_TRIG]		= MST_REG_FIELD(RTL9310_I2C_MST_CTRL, 0, 0),
 		[F_MEM_ADDR]		= MST_REG_FIELD(RTL9310_I2C_MST_MEMADDR_CTRL, 0, 23),
+		[F_BUSY]		= MST_REG_FIELD(RTL9310_I2C_MST_CTRL, 0, 0),
 	},
 	.select_scl = rtl9310_i2c_select_scl,
 	.rd_reg = RTL9310_I2C_MST_DATA_CTRL,