[U-Boot] [PATCH v4 06/13] clk: Provide struct clk for fixed rate clock (clk_fixed_rate.c)

[Lukasz Majewski]

Up till now the fixed rate clock ('osc') has been added to UCLASS_CLK
without declaring struct clk. As a result it was only accessible by
iterating the udevice's uclass list.

This is a problem for clock code, which operates on pointers to struct
clk (like clk_get_rate()), not udevices.

After this change struct clk is accessible from udevice and udevice from
struct clk.

Signed-off-by: Lukasz Majewski <lukma at denx.de>

---

Changes in v4:
- None

Changes in v3: None

 drivers/clk/clk_fixed_rate.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/clk/clk_fixed_rate.c b/drivers/clk/clk_fixed_rate.c
index 50dbb13655..089f060a23 100644
--- a/drivers/clk/clk_fixed_rate.c
+++ b/drivers/clk/clk_fixed_rate.c
@@ -8,6 +8,7 @@
 #include <dm.h>
 
 struct clk_fixed_rate {
+	struct clk clk;
 	unsigned long fixed_rate;
 };
 
@@ -24,10 +25,14 @@ const struct clk_ops clk_fixed_rate_ops = {
 
 static int clk_fixed_rate_ofdata_to_platdata(struct udevice *dev)
 {
+	struct clk *clk = &to_clk_fixed_rate(dev)->clk;
 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
 	to_clk_fixed_rate(dev)->fixed_rate =
 		dev_read_u32_default(dev, "clock-frequency", 0);
 #endif
+	/* Make fixed rate clock accessible from higher level struct clk */
+	dev->driver_data = (ulong)clk;
+	clk->dev = dev;
 
 	return 0;
 }
-- 
2.11.0