[PATCH 03/11] clk: sunxi-ng: mux: Get closest parent rate possible with CLK_SET_RATE_PARENT

Chen-Yu Tsai
2017-01-24T02:32:22Z

If the CLK_SET_RATE_PARENT flag is set, we want to try getting the
closest parent rate.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
drivers/clk/sunxi-ng/ccu_mux.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/sunxi-ng/ccu_mux.c b/drivers/clk/sunxi-ng/ccu_mux.c
index 7cee17cf9c19..c6e83ba47fa4 100644
--- a/drivers/clk/sunxi-ng/ccu_mux.c
+++ b/drivers/clk/sunxi-ng/ccu_mux.c
@@ -93,7 +93,18 @@ int ccu_mux_helper_determine_rate(struct ccu_common *common,
if (!parent)
continue;

- parent_rate = clk_hw_get_rate(parent);
+ if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) {
+ struct clk_rate_request parent_req = *req;
+ int ret = __clk_determine_rate(parent, &parent_req);
+
+ if (ret)
+ continue;
+
+ parent_rate = parent_req.rate;
+ } else {
+ parent_rate = clk_hw_get_rate(parent);
+ }
+
adj_parent_rate = parent_rate;
ccu_mux_helper_adjust_parent_for_prediv(common, cm, i,
&adj_parent_rate);
--
2.11.0