Some NKM PLLs, frequency can be set above PLL working range. Add a constraint for maximum supported rate. This way, drivers can specify which is maximum allowed rate for PLL. Signed-off-by: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx> Acked-by: Stephen Boyd <sboyd@xxxxxxxxxx> --- drivers/clk/sunxi-ng/ccu_nkm.c | 3 +++ drivers/clk/sunxi-ng/ccu_nkm.h | 1 + 2 files changed, 4 insertions(+) diff --git a/drivers/clk/sunxi-ng/ccu_nkm.c b/drivers/clk/sunxi-ng/ccu_nkm.c index 6b5ad990f802..b8b66cdd30bf 100644 --- a/drivers/clk/sunxi-ng/ccu_nkm.c +++ b/drivers/clk/sunxi-ng/ccu_nkm.c @@ -128,6 +128,9 @@ static unsigned long ccu_nkm_round_rate(struct ccu_mux_internal *mux, if (rate < nkm->min_rate) return nkm->min_rate; + if (nkm->max_rate && rate > nkm->max_rate) + return nkm->max_rate; + ccu_nkm_find_best(*parent_rate, rate, &_nkm); rate = *parent_rate * _nkm.n * _nkm.k / _nkm.m; diff --git a/drivers/clk/sunxi-ng/ccu_nkm.h b/drivers/clk/sunxi-ng/ccu_nkm.h index ff5bd00f429f..c82590481188 100644 --- a/drivers/clk/sunxi-ng/ccu_nkm.h +++ b/drivers/clk/sunxi-ng/ccu_nkm.h @@ -36,6 +36,7 @@ struct ccu_nkm { unsigned int fixed_post_div; unsigned int min_rate; + unsigned int max_rate; struct ccu_common common; }; -- 2.18.0.321.gffc6fa0e3 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel