[git:media_stage/master] media: tc358746: fix the pll calculating function

[Hans Verkuil]

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Subject: media: tc358746: fix the pll calculating function
Author:  Duc-Long, Le <duclong.li...@gmail.com>
Date:    Sat Oct 14 20:19:46 2023 -0400

Following formula of Pll_clk in 5.2 section, 50th page of
TC358746AXBG/748XBG/748IXBG Functional Specification Rev 1.1 document.
The formula of fout is as below:
        fout = refclk * mul / (prediv * postdiv)

Remove "p" to avoid using 2 times of prediv in pll calculating function.

Signed-off-by: Duc-Long, Le <duclong.li...@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>

 drivers/media/i2c/tc358746.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

---

diff --git a/drivers/media/i2c/tc358746.c b/drivers/media/i2c/tc358746.c
index 106de4271d2e..d676adc4401b 100644
--- a/drivers/media/i2c/tc358746.c
+++ b/drivers/media/i2c/tc358746.c
@@ -843,14 +843,14 @@ static unsigned long tc358746_find_pll_settings(struct 
tc358746 *tc358746,
                if (fin < 4 * HZ_PER_MHZ || fin > 40 * HZ_PER_MHZ)
                        continue;
 
-               tmp = fout * p * postdiv;
+               tmp = fout * postdiv;
                do_div(tmp, fin);
                mul = tmp;
                if (mul > 511)
                        continue;
 
                tmp = mul * fin;
-               do_div(tmp, p * postdiv);
+               do_div(tmp, postdiv);
 
                delta = abs(fout - tmp);
                if (delta < min_delta) {