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

[Thomas Chou]

Hi Bin,

On 2015年11月05日 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 at 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 at wytron.com.tw>