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[4/7] media: ccs-pll: Correctly the upper limit of maximum op_pre_pll_clk_div

Message ID 20250226132319.2517656-5-sakari.ailus@linux.intel.com (mailing list archive)
State New
Headers show
Series CCS PLL fixes and improvements | expand

Commit Message

Sakari Ailus Feb. 26, 2025, 1:23 p.m. UTC
The PLL calculator does a search of the PLL configuration space for all
valid OP pre-PLL clock dividers. The maximum did not take into account CCS
PLL flag CCS_PLL_FLAG_EXT_IP_PLL_DIVIDER in which case also odd PLL
dividers (other than 1) are valid. Do that now.

Fixes: 4e1e8d240dff ("media: ccs-pll: Add support for extended input PLL clock divider")
Cc: stable@vger.kernel.org
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/media/i2c/ccs-pll.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/media/i2c/ccs-pll.c b/drivers/media/i2c/ccs-pll.c
index 9041c020e34b..611c9823be85 100644
--- a/drivers/media/i2c/ccs-pll.c
+++ b/drivers/media/i2c/ccs-pll.c
@@ -799,7 +799,7 @@  int ccs_pll_calculate(struct device *dev, const struct ccs_pll_limits *lim,
 		op_lim_fr->min_pre_pll_clk_div, op_lim_fr->max_pre_pll_clk_div);
 	max_op_pre_pll_clk_div =
 		min_t(u16, op_lim_fr->max_pre_pll_clk_div,
-		      clk_div_even(pll->ext_clk_freq_hz /
+		      DIV_ROUND_UP(pll->ext_clk_freq_hz,
 				   op_lim_fr->min_pll_ip_clk_freq_hz));
 	min_op_pre_pll_clk_div =
 		max_t(u16, op_lim_fr->min_pre_pll_clk_div,