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-rw-r--r--include/linux/clk-provider.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index a2daf4572b05..e443fa9fa859 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -596,6 +596,12 @@ void clk_hw_unregister_fixed_factor(struct clk_hw *hw);
* @lock: register lock
*
* Clock with adjustable fractional divider affecting its output frequency.
+ *
+ * Flags:
+ * CLK_FRAC_DIVIDER_ZERO_BASED - by default the numerator and denominator
+ * is the value read from the register. If CLK_FRAC_DIVIDER_ZERO_BASED
+ * is set then the numerator and denominator are both the value read
+ * plus one.
*/
struct clk_fractional_divider {
struct clk_hw hw;
@@ -615,6 +621,8 @@ struct clk_fractional_divider {
#define to_clk_fd(_hw) container_of(_hw, struct clk_fractional_divider, hw)
+#define CLK_FRAC_DIVIDER_ZERO_BASED BIT(0)
+
extern const struct clk_ops clk_fractional_divider_ops;
struct clk *clk_register_fractional_divider(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,