[U-Boot] [PATCH 02/10] dm: timer: Implement pre_probe()

Thomas Chou
2015-11-06T07:00:21Z

Hi Bin,

On 2015?11?05? 22:02, Bin Meng wrote:
> Every timer device needs to have a valid clock frequency and it
> can be specified in the device tree. Use pre_probe() to get this
> in the timer uclass driver.
>
> Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
> ---
>
> drivers/timer/timer-uclass.c | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/drivers/timer/timer-uclass.c b/drivers/timer/timer-uclass.c
> index 82c6897..0218591 100644
> --- a/drivers/timer/timer-uclass.c
> +++ b/drivers/timer/timer-uclass.c
> @@ -9,6 +9,8 @@
> #include <errno.h>
> #include <timer.h>
>
> +DECLARE_GLOBAL_DATA_PTR;
> +
> /*
> * Implement a timer uclass to work with lib/time.c. The timer is usually
> * a 32 bits free-running up counter. The get_rate() method is used to get
> @@ -35,8 +37,19 @@ unsigned long timer_get_rate(struct udevice *dev)
> return uc_priv->clock_rate;
> }
>
> +static int timer_pre_probe(struct udevice *dev)
> +{
> + struct timer_dev_priv *uc_priv = dev_get_uclass_priv(dev);
> +
> + uc_priv->clock_rate = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
> + "clock-frequency", 0);
> +
> + return 0;
> +}
> +
> UCLASS_DRIVER(timer) = {
> .id = UCLASS_TIMER,
> .name = "timer",
> + .pre_probe = timer_pre_probe,
> .per_device_auto_alloc_size = sizeof(struct timer_dev_priv),
> };
>

Acked-by: Thomas Chou <thomas@wytron.com.tw>