diff options
Diffstat (limited to 'drivers/clk/clk-mux.c')
-rw-r--r-- | drivers/clk/clk-mux.c | 26 |
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, }; |