diff options
| author | Dario Binacchi <dariobin@libero.it> | 2020-12-30 02:06:31 +0300 |
|---|---|---|
| committer | Lokesh Vutla <lokeshvutla@ti.com> | 2021-01-12 08:28:04 +0300 |
| commit | 2983ad55a13e9afcdf1a3d8f55eea038c0a0e8a3 (patch) | |
| tree | d586303823a6aa0aa980451e53610dc20e7e66b5 /drivers/clk/clk_sandbox.c | |
| parent | 6337d53fdf45df764bc9946d927172397f183d37 (diff) | |
| download | u-boot-2983ad55a13e9afcdf1a3d8f55eea038c0a0e8a3.tar.xz | |
clk: add clk_round_rate()
It returns the rate which will be set if you ask clk_set_rate() to set
that rate. It provides a way to query exactly what rate you'll get if
you call clk_set_rate() with that same argument.
So essentially, clk_round_rate() and clk_set_rate() are equivalent
except the former does not modify the clock hardware in any way.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Diffstat (limited to 'drivers/clk/clk_sandbox.c')
| -rw-r--r-- | drivers/clk/clk_sandbox.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/clk/clk_sandbox.c b/drivers/clk/clk_sandbox.c index 2c6c0e239f..b28b67b448 100644 --- a/drivers/clk/clk_sandbox.c +++ b/drivers/clk/clk_sandbox.c @@ -30,6 +30,22 @@ static ulong sandbox_clk_get_rate(struct clk *clk) return priv->rate[clk->id]; } +static ulong sandbox_clk_round_rate(struct clk *clk, ulong rate) +{ + struct sandbox_clk_priv *priv = dev_get_priv(clk->dev); + + if (!priv->probed) + return -ENODEV; + + if (clk->id >= SANDBOX_CLK_ID_COUNT) + return -EINVAL; + + if (!rate) + return -EINVAL; + + return rate; +} + static ulong sandbox_clk_set_rate(struct clk *clk, ulong rate) { struct sandbox_clk_priv *priv = dev_get_priv(clk->dev); @@ -103,6 +119,7 @@ static int sandbox_clk_free(struct clk *clk) } static struct clk_ops sandbox_clk_ops = { + .round_rate = sandbox_clk_round_rate, .get_rate = sandbox_clk_get_rate, .set_rate = sandbox_clk_set_rate, .enable = sandbox_clk_enable, |