[PATCH v6 1/2] clk: qcom: clk-rcg2: document calc_rate function
From: Dzmitry Sankouski
Date: Mon Oct 07 2024 - 11:36:34 EST
Update calc_rate docs to reflect, that pre_div
is not pure divisor, but a register value, and requires conversion.
Signed-off-by: Dzmitry Sankouski <dsankouski@xxxxxxxxx>
---
drivers/clk/qcom/clk-rcg2.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/qcom/clk-rcg2.c b/drivers/clk/qcom/clk-rcg2.c
index bf26c5448f00..0fc23a87b432 100644
--- a/drivers/clk/qcom/clk-rcg2.c
+++ b/drivers/clk/qcom/clk-rcg2.c
@@ -153,7 +153,14 @@ static int clk_rcg2_set_parent(struct clk_hw *hw, u8 index)
*
* parent_rate m
* rate = ----------- x ---
- * hid_div n
+ * pre_div n
+ *
+ * @param rate - Parent rate.
+ * @param m - Multiplier.
+ * @param n - Divisor.
+ * @param mode - Use zero to ignore m/n calculation.
+ * @param hid_div - Pre divisor register value. Pre divisor value
+ * relates to hid_div as pre_div = (hid_div + 1) / 2
*/
static unsigned long
calc_rate(unsigned long rate, u32 m, u32 n, u32 mode, u32 hid_div)
--
2.39.2