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| author | Wadim Egorov <w.egorov@phytec.de> | 2018-03-19 16:39:29 +0100 |
|---|---|---|
| committer | Philipp Tomsich <philipp.tomsich@theobroma-systems.com> | 2018-04-25 14:05:09 +0200 |
| commit | b0ba1e7e9d9b9441a18048ec67a3b3100c096975 (patch) | |
| tree | 9826fc6d33cd78f12d9e30ef92baa0d6dd1c5031 /drivers | |
| parent | 5512f5ccf1dc5cec068f8efa1d8ce81f51a988d3 (diff) | |
| download | u-boot-b0ba1e7e9d9b9441a18048ec67a3b3100c096975.zip u-boot-b0ba1e7e9d9b9441a18048ec67a3b3100c096975.tar.gz u-boot-b0ba1e7e9d9b9441a18048ec67a3b3100c096975.tar.bz2 | |
rockchip: clk: rk3288: add clk_enable function and support USB HOST0/HSIC
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.egorov@phytec.de>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/clk/rockchip/clk_rk3288.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/clk/rockchip/clk_rk3288.c b/drivers/clk/rockchip/clk_rk3288.c index 3a36d04..78ada2d 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) |