1 files changed, 17 insertions, 4 deletions

diff --git a/drivers/clk/versatile/clk-icst.c b/drivers/clk/versatile/clk-icst.c
index 8cbfcf88fae3..a820b0cfcf57 100644
--- a/drivers/clk/versatile/clk-icst.c
+++ b/drivers/clk/versatile/clk-icst.c
@@ -33,7 +33,7 @@ struct clk_icst {
         struct clk_hw hw;
         void __iomem *vcoreg;
         void __iomem *lockreg;
-        const struct icst_params *params;
+        struct icst_params *params;
         unsigned long rate;
 };
 
@@ -84,6 +84,8 @@ static unsigned long icst_recalc_rate(struct clk_hw *hw,
         struct clk_icst *icst = to_icst(hw);
         struct icst_vco vco;
 
+        if (parent_rate)
+                icst->params->ref = parent_rate;
         vco = vco_get(icst->vcoreg);
         icst->rate = icst_hz(icst->params, vco);
         return icst->rate;
@@ -105,6 +107,8 @@ static int icst_set_rate(struct clk_hw *hw, unsigned long rate,
         struct clk_icst *icst = to_icst(hw);
         struct icst_vco vco;
 
+        if (parent_rate)
+                icst->params->ref = parent_rate;
         vco = icst_hz_to_vco(icst->params, rate);
         icst->rate = icst_hz(icst->params, vco);
         vco_set(icst->lockreg, icst->vcoreg, vco);
@@ -120,24 +124,33 @@ static const struct clk_ops icst_ops = {
 struct clk *icst_clk_register(struct device *dev,
                         const struct clk_icst_desc *desc,
                         const char *name,
+                        const char *parent_name,
                         void __iomem *base)
 {
         struct clk *clk;
         struct clk_icst *icst;
         struct clk_init_data init;
+        struct icst_params *pclone;
 
         icst = kzalloc(sizeof(struct clk_icst), GFP_KERNEL);
         if (!icst) {
                 pr_err("could not allocate ICST clock!\n");
                 return ERR_PTR(-ENOMEM);
         }
+
+        pclone = kmemdup(desc->params, sizeof(*pclone), GFP_KERNEL);
+        if (!pclone) {
+                pr_err("could not clone ICST params\n");
+                return ERR_PTR(-ENOMEM);
+        }
+
         init.name = name;
         init.ops = &icst_ops;
         init.flags = CLK_IS_ROOT;
-        init.parent_names = NULL;
-        init.num_parents = 0;
+        init.parent_names = (parent_name ? &parent_name : NULL);
+        init.num_parents = (parent_name ? 1 : 0);
         icst->hw.init = &init;
-        icst->params = desc->params;
+        icst->params = pclone;
         icst->vcoreg = base + desc->vco_offset;
         icst->lockreg = base + desc->lock_offset;