clk: sunxi-ng: Call divider_round_rate if we only have a single parent

The divider_get_val function that is used in our determine_rate callback
doesn't try to change the parent rate at all, while clk_divider_bestdiv,
used in divider_round_rate, does.

If we have a single parent, call divider_round_rate.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>

diff --git a/drivers/clk/sunxi-ng/ccu_div.c b/drivers/clk/sunxi-ng/ccu_div.c
index 8659b4cb6c2099cba086b29713e2312a7703b87d..4057e6021aa9f74a1cd91acef616d48fe1fc1b1a 100644 (file)
--- a/drivers/clk/sunxi-ng/ccu_div.c
+++ b/drivers/clk/sunxi-ng/ccu_div.c
@@ -77,6 +77,18 @@ static int ccu_div_determine_rate(struct clk_hw *hw,
 {
        struct ccu_div *cd = hw_to_ccu_div(hw);
 
+       if (clk_hw_get_num_parents(hw) == 1) {
+               req->rate = divider_round_rate(hw, req->rate,
+                                              &req->best_parent_rate,
+                                              cd->div.table,
+                                              cd->div.width,
+                                              cd->div.flags);
+
+               req->best_parent_hw = clk_hw_get_parent(hw);
+
+               return 0;
+       }
+
        return ccu_mux_helper_determine_rate(&cd->common, &cd->mux,
                                             req, ccu_div_round_rate, cd);
 }