clk: versal: Fix watchdog clock issue

Enable mux based clocks to populate LPD_LSBUS clock to xilinx_wwdt
driver. Skip reading clock rate for the mux based clocks with
parent clock id is zero.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>

diff --git a/drivers/clk/clk_versal.c b/drivers/clk/clk_versal.c
index d3673a5..075a083 100644 (file)
--- a/drivers/clk/clk_versal.c
+++ b/drivers/clk/clk_versal.c
@@ -503,6 +503,9 @@ static u64 versal_clock_calc(u32 clk_id)
             NODE_CLASS_MASK) == NODE_SUBCLASS_CLOCK_REF)
                return versal_clock_ref(clk_id);
 
+       if (!parent_id)
+               return 0;
+
        clk_rate = versal_clock_calc(parent_id);
 
        if (versal_clock_div(clk_id)) {
@@ -526,7 +529,7 @@ static int versal_clock_get_rate(u32 clk_id, u64 *clk_rate)
             NODE_CLASS_MASK) == NODE_SUBCLASS_CLOCK_OUT &&
            ((clk_id >> NODE_CLASS_SHIFT) &
             NODE_CLASS_MASK) == NODE_CLASS_CLOCK) {
-               if (!versal_clock_gate(clk_id))
+               if (!versal_clock_gate(clk_id) && !versal_clock_mux(clk_id))
                        return -EINVAL;
                *clk_rate = versal_clock_calc(clk_id);
                return 0;