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timer: add OF_PLATDATA support for timer-uclass

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The timer-uclass depends on full OF_CONTROL through its interrogation
of /chosen and the code to determine the clock-frequency.

For the OF_PLATDATA case, these code-paths are disabled and it becomes
the timer driver's responsibility to correctly set the clock-frequency
in the uclass priv-data.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Philipp Tomsich 2017-07-28 17:19:58 +02:00
parent b65236ae3a
commit b1a16002f2
1 changed files with 6 additions and 2 deletions
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8
drivers/timer/timer-uclass.c
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@ -42,6 +42,7 @@ unsigned long notrace timer_get_rate(struct udevice *dev)
static int timer_pre_probe(struct udevice *dev)
{
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
struct timer_dev_priv *uc_priv = dev_get_uclass_priv(dev);
struct clk timer_clk;
int err;
@ -56,6 +57,7 @@ static int timer_pre_probe(struct udevice *dev)
} else
uc_priv->clock_rate = fdtdec_get_int(gd->fdt_blob,
dev_of_offset(dev), "clock-frequency", 0);
#endif
return 0;
}
@ -81,16 +83,18 @@ u64 timer_conv_64(u32 count)
int notrace dm_timer_init(void)
{
const void *blob = gd->fdt_blob;
__maybe_unused const void *blob = gd->fdt_blob;
struct udevice *dev = NULL;
int node;
int node = -ENOENT;
int ret;
if (gd->timer)
return 0;
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
/* Check for a chosen timer to be used for tick */
node = fdtdec_get_chosen_node(blob, "tick-timer");
#endif
if (node < 0) {
/* No chosen timer, trying first available timer */
ret = uclass_first_device_err(UCLASS_TIMER, &dev);