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clk: sunxi-ng: mux: honor CLK_SET_RATE_NO_REPARENT flag

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This patch adds support for the CLK_SET_RATE_NO_REPARENT flag to the
mux determine_rate helper, based on examples from clk-composite and
clk-mux.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This commit is contained in:
Chen-Yu Tsai 2017-01-28 20:22:31 +08:00 committed by Maxime Ripard
parent ed48205fb4
commit 216abdcc3a
1 changed files with 15 additions and 0 deletions
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15
drivers/clk/sunxi-ng/ccu_mux.c
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@ -70,6 +70,21 @@ int ccu_mux_helper_determine_rate(struct ccu_common *common,
struct clk_hw *best_parent, *hw = &common->hw;
unsigned int i;
if (clk_hw_get_flags(hw) & CLK_SET_RATE_NO_REPARENT) {
unsigned long adj_parent_rate;
best_parent = clk_hw_get_parent(hw);
best_parent_rate = clk_hw_get_rate(best_parent);
adj_parent_rate = best_parent_rate;
ccu_mux_helper_adjust_parent_for_prediv(common, cm, -1,
&adj_parent_rate);
best_rate = round(cm, adj_parent_rate, req->rate, data);
goto out;
}
for (i = 0; i < clk_hw_get_num_parents(hw); i++) {
unsigned long tmp_rate, parent_rate, adj_parent_rate;
struct clk_hw *parent;