diff options
| author | Nicolas Heemeryck <nicolas.heemeryck@gmail.com> | 2020-03-13 23:42:44 +0100 |
|---|---|---|
| committer | Patrick Delaunay <patrick.delaunay@st.com> | 2020-03-24 14:23:35 +0100 |
| commit | 5b5699cdc97122e08e7fd0886a9e4474ca3ccb35 (patch) | |
| tree | 2dfc6d6953793e85d78b4ca79bec6b1a5fbca421 /drivers/timer | |
| parent | 123123d695a9b024a1413645eeff4bb41f610332 (diff) | |
timer: sti: use clk API to get timer clock rate
Retrieve clock rate through device tree. This mimics the behavior of
arm_global_timer in Linux.
Signed-off-by: Nicolas Heemeryck <nicolas.heemeryck@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Diffstat (limited to 'drivers/timer')
| -rw-r--r-- | drivers/timer/sti-timer.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/timer/sti-timer.c b/drivers/timer/sti-timer.c index eac22ae39b..ff42056abd 100644 --- a/drivers/timer/sti-timer.c +++ b/drivers/timer/sti-timer.c @@ -6,7 +6,9 @@ #include <common.h> #include <dm.h> +#include <clk.h> #include <timer.h> +#include <linux/err.h> #include <asm/io.h> #include <asm/arch-armv7/globaltimer.h> @@ -41,14 +43,25 @@ static int sti_timer_probe(struct udevice *dev) { struct timer_dev_priv *uc_priv = dev_get_uclass_priv(dev); struct sti_timer_priv *priv = dev_get_priv(dev); - - uc_priv->clock_rate = CONFIG_SYS_HZ_CLOCK; + struct clk clk; + int err; + ulong ret; /* get arm global timer base address */ priv->global_timer = (struct globaltimer *)dev_read_addr_ptr(dev); if (!priv->global_timer) return -ENOENT; + err = clk_get_by_index(dev, 0, &clk); + if (!err) { + ret = clk_get_rate(&clk); + if (IS_ERR_VALUE(ret)) + return ret; + uc_priv->clock_rate = ret; + } else { + uc_priv->clock_rate = CONFIG_SYS_HZ_CLOCK; + } + /* init timer */ writel(0x01, &priv->global_timer->ctl); |