4 files changed, 15 insertions, 3 deletions

diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
index ded3ff4b91b9..aa1dacdaa39d 100644
--- a/drivers/clk/clk-divider.c
+++ b/drivers/clk/clk-divider.c
@@ -423,6 +423,12 @@ const struct clk_ops clk_divider_ops = {
 };
 EXPORT_SYMBOL_GPL(clk_divider_ops);
 
+const struct clk_ops clk_divider_ro_ops = {
+        .recalc_rate = clk_divider_recalc_rate,
+        .round_rate = clk_divider_round_rate,
+};
+EXPORT_SYMBOL_GPL(clk_divider_ro_ops);
+
 static struct clk *_register_divider(struct device *dev, const char *name,
                 const char *parent_name, unsigned long flags,
                 void __iomem *reg, u8 shift, u8 width,
@@ -446,7 +452,10 @@ static struct clk *_register_divider(struct device *dev, const char *name,
                 return ERR_PTR(-ENOMEM);
 
         init.name = name;
-        init.ops = &clk_divider_ops;
+        if (clk_divider_flags & CLK_DIVIDER_READ_ONLY)
+                init.ops = &clk_divider_ro_ops;
+        else
+                init.ops = &clk_divider_ops;
         init.flags = flags | CLK_IS_BASIC;
         init.parent_names = (parent_name ? &parent_name: NULL);
         init.num_parents = (parent_name ? 1 : 0);
diff --git a/drivers/clk/nxp/clk-lpc18xx-ccu.c b/drivers/clk/nxp/clk-lpc18xx-ccu.c
index 13aabbb3acbe..558da89555af 100644
--- a/drivers/clk/nxp/clk-lpc18xx-ccu.c
+++ b/drivers/clk/nxp/clk-lpc18xx-ccu.c
@@ -222,7 +222,7 @@ static void lpc18xx_ccu_register_branch_gate_div(struct lpc18xx_clk_branch *bran
                 div->width = 1;
 
                 div_hw = &div->hw;
-                div_ops = &clk_divider_ops;
+                div_ops = &clk_divider_ro_ops;
         }
 
         branch->gate.reg = branch->offset + reg_base;
diff --git a/drivers/clk/rockchip/clk.c b/drivers/clk/rockchip/clk.c
index d9a0b5d4d47f..f7e8693ad28b 100644
--- a/drivers/clk/rockchip/clk.c
+++ b/drivers/clk/rockchip/clk.c
@@ -90,7 +90,9 @@ static struct clk *rockchip_clk_register_branch(const char *name,
                 div->width = div_width;
                 div->lock = lock;
                 div->table = div_table;
-                div_ops = &clk_divider_ops;
+                div_ops = (div_flags & CLK_DIVIDER_READ_ONLY)
+                                                ? &clk_divider_ro_ops
+                                                : &clk_divider_ops;
         }
 
         clk = clk_register_composite(NULL, name, parent_names, num_parents,
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 1143e38555a4..408a60dca353 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -385,6 +385,7 @@ struct clk_divider {
 #define CLK_DIVIDER_MAX_AT_ZERO         BIT(6)
 
 extern const struct clk_ops clk_divider_ops;
+extern const struct clk_ops clk_divider_ro_ops;
 
 unsigned long divider_recalc_rate(struct clk_hw *hw, unsigned long parent_rate,
                 unsigned int val, const struct clk_div_table *table,