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-rw-r--r--include/linux/clk-provider.h14
1 files changed, 10 insertions, 4 deletions
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index d83b829305c0..f59c875271a0 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -342,7 +342,7 @@ struct clk_fixed_rate {
unsigned long flags;
};
-#define CLK_FIXED_RATE_PARENT_ACCURACY BIT(0)
+#define CLK_FIXED_RATE_PARENT_ACCURACY BIT(0)
extern const struct clk_ops clk_fixed_rate_ops;
struct clk_hw *__clk_hw_register_fixed_rate(struct device *dev,
@@ -1001,6 +1001,12 @@ struct clk_hw *devm_clk_hw_register_fixed_factor(struct device *dev,
* CLK_FRAC_DIVIDER_BIG_ENDIAN - By default little endian register accesses are
* used for the divider register. Setting this flag makes the register
* accesses big endian.
+ * CLK_FRAC_DIVIDER_POWER_OF_TWO_PS - By default the resulting fraction might
+ * be saturated and the caller will get quite far from the good enough
+ * approximation. Instead the caller may require, by setting this flag,
+ * to shift left by a few bits in case, when the asked one is quite small
+ * to satisfy the desired range of denominator. It assumes that on the
+ * caller's side the power-of-two capable prescaler exists.
*/
struct clk_fractional_divider {
struct clk_hw hw;
@@ -1022,8 +1028,8 @@ struct clk_fractional_divider {
#define CLK_FRAC_DIVIDER_ZERO_BASED BIT(0)
#define CLK_FRAC_DIVIDER_BIG_ENDIAN BIT(1)
+#define CLK_FRAC_DIVIDER_POWER_OF_TWO_PS BIT(2)
-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,
void __iomem *reg, u8 mshift, u8 mwidth, u8 nshift, u8 nwidth,
@@ -1069,9 +1075,9 @@ struct clk_multiplier {
#define to_clk_multiplier(_hw) container_of(_hw, struct clk_multiplier, hw)
-#define CLK_MULTIPLIER_ZERO_BYPASS BIT(0)
+#define CLK_MULTIPLIER_ZERO_BYPASS BIT(0)
#define CLK_MULTIPLIER_ROUND_CLOSEST BIT(1)
-#define CLK_MULTIPLIER_BIG_ENDIAN BIT(2)
+#define CLK_MULTIPLIER_BIG_ENDIAN BIT(2)
extern const struct clk_ops clk_multiplier_ops;