The generic ehci-driver (ehci-generic.c) will try to enable the clocks
listed in the DTSI. If this fails (e.g. due to clk_enable not being
implemented in a driver and -ENOSYS being returned by the clk-uclass),
the driver will bail our and print an error message.
This implements a minimal clk_enable for the RK3288 and supports the
clocks mandatory for the EHCI controllers; as these are enabled by
default we simply return success.
Signed-off-by: Wadim Egorov <w.ego...@phytec.de>
---
drivers/clk/rockchip/clk_rk3288.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/clk/rockchip/clk_rk3288.c
b/drivers/clk/rockchip/clk_rk3288.c
index 552a71a..a028b8b 100644
--- a/drivers/clk/rockchip/clk_rk3288.c
+++ b/drivers/clk/rockchip/clk_rk3288.c
@@ -893,12 +893,25 @@ static int __maybe_unused rk3288_clk_set_parent(struct
clk *clk, struct clk *par
return -ENOENT;
}
+static int rk3288_clk_enable(struct clk *clk)
+{
+ switch (clk->id) {
+ case HCLK_USBHOST0:
+ case HCLK_HSIC:
+ return 0;
+ }
+
+ debug("%s: unsupported clk %ld\n", __func__, clk->id);
+ return -ENOENT;
+}
+
static struct clk_ops rk3288_clk_ops = {
.get_rate = rk3288_clk_get_rate,
.set_rate = rk3288_clk_set_rate,
#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
.set_parent = rk3288_clk_set_parent,
#endif
+ .enable = rk3288_clk_enable,
};
static int rk3288_clk_ofdata_to_platdata(struct udevice *dev)
--
2.7.4
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