diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 016814e15536..3fbb40cb5551 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -513,4 +513,11 @@ config CLK_GATE_KUNIT_TEST
 	help
 	  Kunit test for the basic clk gate type.
 
+config CLK_FD_KUNIT_TEST
+	tristate "Basic fractional divider type Kunit test" if !KUNIT_ALL_TESTS
+	depends on KUNIT
+	default KUNIT_ALL_TESTS
+	help
+	  Kunit test for the clk-fractional-divider type.
+
 endif
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 0aebef17edc6..9d2337c12dd1 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_COMMON_CLK)	+= clk-multiplier.o
 obj-$(CONFIG_COMMON_CLK)	+= clk-mux.o
 obj-$(CONFIG_COMMON_CLK)	+= clk-composite.o
 obj-$(CONFIG_COMMON_CLK)	+= clk-fractional-divider.o
+obj-$(CONFIG_CLK_FD_KUNIT_TEST) += clk-fractional-divider_test.o
 obj-$(CONFIG_COMMON_CLK)	+= clk-gpio.o
 ifeq ($(CONFIG_OF), y)
 obj-$(CONFIG_COMMON_CLK)	+= clk-conf.o
diff --git a/drivers/clk/clk-fractional-divider_test.c b/drivers/clk/clk-fractional-divider_test.c
new file mode 100644
index 000000000000..30a776cf33c0
--- /dev/null
+++ b/drivers/clk/clk-fractional-divider_test.c
@@ -0,0 +1,161 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Kunit test for clock fractional divider
+ */
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+
+/* Needed for clk_hw_get_clk() */
+#include "clk.h"
+
+/* Needed for clk_fractional_divider_general_approximation */
+#include "clk-fractional-divider.h"
+
+#include <kunit/test.h>
+
+/*
+ * Test the maximum denominator case for fd clock without flags.
+ *
+ * Expect the highest possible denominator to be used in order to get as close as possible to the
+ * requested rate.
+ */
+static void clk_fd_test_approximation_max_denominator(struct kunit *test)
+{
+	struct clk_fractional_divider *fd;
+	struct clk_hw *hw;
+	unsigned long rate, parent_rate, m, n, max_m, max_n;
+
+	fd = kunit_kzalloc(test, sizeof(*fd), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, fd);
+
+	fd->mwidth = 3;
+	max_m = 7;
+	fd->nwidth = 3;
+	max_n = 7;
+
+	hw = &fd->hw;
+
+	rate = 240000000;
+	parent_rate = (max_n + 1) * rate; /* so that it exceeds the maximum divisor */
+
+	clk_fractional_divider_general_approximation(hw, rate, &parent_rate, &m, &n);
+	KUNIT_EXPECT_EQ(test, parent_rate, (max_n + 1) * rate); /* parent remains unchanged */
+	KUNIT_EXPECT_EQ(test, m, 1);
+	KUNIT_EXPECT_EQ(test, n, max_n);
+}
+
+/*
+ * Test the maximum numerator case for fd clock without flags.
+ *
+ * Expect the highest possible numerator to be used in order to get as close as possible to the
+ * requested rate.
+ */
+static void clk_fd_test_approximation_max_numerator(struct kunit *test)
+{
+	struct clk_fractional_divider *fd;
+	struct clk_hw *hw;
+	unsigned long rate, parent_rate, m, n, max_m, max_n;
+
+	fd = kunit_kzalloc(test, sizeof(*fd), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, fd);
+
+	fd->mwidth = 3;
+	max_m = 7;
+	fd->nwidth = 3;
+	max_n = 7;
+
+	hw = &fd->hw;
+
+	rate = 240000000;
+	parent_rate = rate / (max_m + 1); /* so that it exceeds the maximum numerator */
+
+	clk_fractional_divider_general_approximation(hw, rate, &parent_rate, &m, &n);
+	KUNIT_EXPECT_EQ(test, parent_rate, rate / (max_n + 1)); /* parent remains unchanged */
+	KUNIT_EXPECT_EQ(test, m, max_m);
+	KUNIT_EXPECT_EQ(test, n, 1);
+}
+
+/*
+ * Test the maximum denominator case for zero based fd clock.
+ *
+ * Expect the highest possible denominator to be used in order to get as close as possible to the
+ * requested rate.
+ */
+static void clk_fd_test_approximation_max_denominator_zero_based(struct kunit *test)
+{
+	struct clk_fractional_divider *fd;
+	struct clk_hw *hw;
+	unsigned long rate, parent_rate, m, n, max_m, max_n;
+
+	fd = kunit_kzalloc(test, sizeof(*fd), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, fd);
+
+	fd->flags = CLK_FRAC_DIVIDER_ZERO_BASED;
+	fd->mwidth = 3;
+	max_m = 8;
+	fd->nwidth = 3;
+	max_n = 8;
+
+	hw = &fd->hw;
+
+	rate = 240000000;
+	parent_rate = (max_n + 1) * rate; /* so that it exceeds the maximum divisor */
+
+	clk_fractional_divider_general_approximation(hw, rate, &parent_rate, &m, &n);
+	KUNIT_EXPECT_EQ(test, parent_rate, (max_n + 1) * rate); /* parent remains unchanged */
+	KUNIT_EXPECT_EQ(test, m, 1);
+	KUNIT_EXPECT_EQ(test, n, max_n);
+}
+
+/*
+ * Test the maximum numerator case for zero based fd clock.
+ *
+ * Expect the highest possible numerator to be used in order to get as close as possible to the
+ * requested rate.
+ */
+static void clk_fd_test_approximation_max_numerator_zero_based(struct kunit *test)
+{
+	struct clk_fractional_divider *fd;
+	struct clk_hw *hw;
+	unsigned long rate, parent_rate, m, n, max_m, max_n;
+
+	fd = kunit_kzalloc(test, sizeof(*fd), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, fd);
+
+	fd->flags = CLK_FRAC_DIVIDER_ZERO_BASED;
+	fd->mwidth = 3;
+	max_m = 8;
+	fd->nwidth = 3;
+	max_n = 8;
+
+	hw = &fd->hw;
+
+	rate = 240000000;
+	parent_rate = rate / (max_m + 1); /* so that it exceeds the maximum numerator */
+
+	clk_fractional_divider_general_approximation(hw, rate, &parent_rate, &m, &n);
+	KUNIT_EXPECT_EQ(test, parent_rate, rate / (max_n + 1)); /* parent remains unchanged */
+	KUNIT_EXPECT_EQ(test, m, max_m);
+	KUNIT_EXPECT_EQ(test, n, 1);
+}
+
+static struct kunit_case clk_fd_test_cases[] = {
+	KUNIT_CASE(clk_fd_test_approximation_max_denominator),
+	KUNIT_CASE(clk_fd_test_approximation_max_numerator),
+	KUNIT_CASE(clk_fd_test_approximation_max_denominator_zero_based),
+	KUNIT_CASE(clk_fd_test_approximation_max_numerator_zero_based),
+	{}
+};
+
+/*
+ * Test suite for a fractional divider clock.
+ */
+static struct kunit_suite clk_fd_test_suite = {
+	.name = "clk-fd-test",
+	.test_cases = clk_fd_test_cases,
+};
+
+kunit_test_suites(
+	&clk_fd_test_suite
+);
+MODULE_LICENSE("GPL");
