| Message ID | 20230806-pll-mipi_set_rate_parent-v5-11-db4f5ca33fc3@oltmanns.dev (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Headers | show |
| Series | clk: sunxi-ng: Consider alternative parent rates when determining NKM clock rate | expand |
Dne nedelja, 06. avgust 2023 ob 15:06:56 CEST je Frank Oltmanns napisal(a): > Similar to ccu_mp, if the current parent rate allows getting the ideal > rate, prefer to not change the parent clock's rate. > > Signed-off-by: Frank Oltmanns <frank@oltmanns.dev> Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com> Best regards, Jernej > --- > drivers/clk/sunxi-ng/ccu_nkm.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/clk/sunxi-ng/ccu_nkm.c b/drivers/clk/sunxi-ng/ccu_nkm.c > index 896bb1ef8642..1e49444817cf 100644 > --- a/drivers/clk/sunxi-ng/ccu_nkm.c > +++ b/drivers/clk/sunxi-ng/ccu_nkm.c > @@ -35,7 +35,8 @@ 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;
diff --git a/drivers/clk/sunxi-ng/ccu_nkm.c b/drivers/clk/sunxi-ng/ccu_nkm.c index 896bb1ef8642..1e49444817cf 100644 --- a/drivers/clk/sunxi-ng/ccu_nkm.c +++ b/drivers/clk/sunxi-ng/ccu_nkm.c @@ -35,7 +35,8 @@ 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;
Similar to ccu_mp, if the current parent rate allows getting the ideal rate, prefer to not change the parent clock's rate. Signed-off-by: Frank Oltmanns <frank@oltmanns.dev> --- drivers/clk/sunxi-ng/ccu_nkm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)