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media: tc358746: fix the pll calculating function

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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.linux@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Duc-Long, Le
2023-10-14 20:19:46 -04:00
committed by Hans Verkuil
parent feb8831be9
commit 35546945e5
1 changed files with 2 additions and 2 deletions
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drivers/media/i2c/tc358746.c
+2 -2
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@@ -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) {