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media: ccs-pll: Print a debug message when VT tree calculation fails

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When the VT tree calculation fails to find a valid pre-divider, the
ccs_pll_calculate_vt_tree() function returns an error silently, and the
caller doesn't print any message either. This makes debugging PLL
calculation issues more difficult. Add a debug message to report the
issue, and amend the corresponding message for the OP tree to mention
"OP".

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
This commit is contained in:
Laurent Pinchart 2025-04-28 01:13:32 +03:00 committed by Hans Verkuil
parent e3d86847fb
commit ac6fb0d8f9
1 changed files with 2 additions and 2 deletions
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4
drivers/media/i2c/ccs-pll.c
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@ -449,6 +449,7 @@ static int ccs_pll_calculate_vt_tree(struct device *dev,
return 0;
}
dev_dbg(dev, "unable to compute VT pre_pll divisor\n");
return -EINVAL;
}
@ -888,8 +889,7 @@ int ccs_pll_calculate(struct device *dev, const struct ccs_pll_limits *lim,
}
if (rval) {
dev_dbg(dev, "unable to compute pre_pll divisor\n");
dev_dbg(dev, "unable to compute OP pre_pll divisor\n");
return rval;
}