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clk: sunxi-ng: nkm: Prefer current parent rate

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Similar to ccu_mp, if the current parent rate allows getting the ideal
rate, prefer to not change the parent clock's rate.

Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Frank Oltmanns <frank@oltmanns.dev>
Link: https://lore.kernel.org/r/20230807-pll-mipi_set_rate_parent-v6-11-f173239a4b59@oltmanns.dev
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
This commit is contained in:
Frank Oltmanns 2023-08-07 14:43:44 +02:00 committed by Chen-Yu Tsai
parent bf8eb12f52
commit a69f946339
1 changed files with 2 additions and 1 deletions
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3
drivers/clk/sunxi-ng/ccu_nkm.c
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@ -34,7 +34,8 @@ static unsigned long ccu_nkm_find_best_with_parent_adj(struct ccu_common *common
tmp_rate = tmp_parent * _n * _k / _m;
if (ccu_is_better_rate(common, rate, tmp_rate, best_rate)) {
if (ccu_is_better_rate(common, rate, tmp_rate, best_rate) ||
(tmp_parent == *parent && tmp_rate == best_rate)) {
best_rate = tmp_rate;
best_parent_rate = tmp_parent;
best_n = _n;