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-rw-r--r--drivers/clk/clk-mux.c26
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/clk/clk-mux.c b/drivers/clk/clk-mux.c
index e10baaf83b..ec8017b7d2 100644
--- a/drivers/clk/clk-mux.c
+++ b/drivers/clk/clk-mux.c
@@ -149,8 +149,32 @@ static int clk_mux_set_parent(struct clk *clk, struct clk *parent)
return 0;
}
+static ulong clk_mux_get_rate(struct clk *clk)
+{
+ struct clk_mux *mux = to_clk_mux(clk_dev_binded(clk) ?
+ dev_get_clk_ptr(clk->dev) : clk);
+ struct udevice *parent;
+ struct clk *pclk;
+ int err, index;
+
+ index = clk_mux_get_parent(clk);
+ if (index >= mux->num_parents)
+ return -EFAULT;
+
+ err = uclass_get_device_by_name(UCLASS_CLK, mux->parent_names[index],
+ &parent);
+ if (err)
+ return err;
+
+ pclk = dev_get_clk_ptr(parent);
+ if (!pclk)
+ return -ENODEV;
+
+ return clk_get_rate(pclk);
+}
+
const struct clk_ops clk_mux_ops = {
- .get_rate = clk_generic_get_rate,
+ .get_rate = clk_mux_get_rate,
.set_parent = clk_mux_set_parent,
};