clk: mediatek: return XTAL rate for infrasys get_mux_rate

We currently return 0 if XTAL rate is requested in get_mux_rate. This
deviates from what is done in get_factor_rate and is totally wrong as it
can cause unwanted results (division by 0 crash)

For infrasys that makes use of CLK_XTAL, assume xtal_rate to be defined
in clk_tree and return the rate when BYPASS_XTAL is not enabled with
clk ID 0 index parents.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c
index 3977f38bf5182c71f60c598730560817e964432c..6d4506ddc4a79ff4fbfbeceb313902903ae62fd6 100644 (file)
--- a/drivers/clk/mediatek/clk-mtk.c
+++ b/drivers/clk/mediatek/clk-mtk.c
@@ -377,7 +377,7 @@ static ulong mtk_infrasys_get_mux_rate(struct clk *clk, u32 off)
                        break;
                }
        }
-       return 0;
+       return priv->tree->xtal_rate;
 }
 
 static ulong mtk_topckgen_get_rate(struct clk *clk)