[PATCH 03/11] clk: sunxi-ng: mux: Get closest parent rate possible with CLK_SET_RATE_PARENT
From: Chen-Yu Tsai <hidden>
Date: 2017-01-24 02:32:45
Also in:
linux-arm-kernel, linux-clk, lkml
Subsystem:
arm/allwinner sunxi soc support, common clk framework, the rest · Maintainers:
Chen-Yu Tsai, Jernej Skrabec, Samuel Holland, Michael Turquette, Stephen Boyd, Linus Torvalds
If the CLK_SET_RATE_PARENT flag is set, we want to try getting the closest parent rate. Signed-off-by: Chen-Yu Tsai <redacted> --- 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