[U-Boot] [PATCH 3/6] timer: dw-apb: add reset handling

Marek Vasut marex at denx.de
Wed Jul 24 07:21:26 UTC 2019


On 7/23/19 10:27 PM, Simon Goldschmidt wrote:
> To use this timer on socfpga as system tick, it needs to take itself out
> of reset.
> 
> Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>
> ---
> 
>  drivers/timer/dw-apb-timer.c | 18 +++++++++++++++++-
>  1 file changed, 17 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/timer/dw-apb-timer.c b/drivers/timer/dw-apb-timer.c
> index 86312b8dc7..fad22be8c9 100644
> --- a/drivers/timer/dw-apb-timer.c
> +++ b/drivers/timer/dw-apb-timer.c
> @@ -8,6 +8,7 @@
>  #include <common.h>
>  #include <dm.h>
>  #include <clk.h>
> +#include <reset.h>
>  #include <timer.h>
>  
>  #include <asm/io.h>
> @@ -18,7 +19,8 @@
>  #define DW_APB_CTRL		0x8
>  
>  struct dw_apb_timer_priv {
> -	fdt_addr_t	regs;
> +	fdt_addr_t regs;
> +	struct reset_ctl_bulk resets;
>  };
>  
>  static int dw_apb_timer_get_count(struct udevice *dev, u64 *count)
> @@ -42,6 +44,12 @@ static int dw_apb_timer_probe(struct udevice *dev)
>  	struct clk clk;
>  	int ret;
>  
> +	ret = reset_get_bulk(dev, &priv->resets);
> +	if (ret)
> +		dev_warn(dev, "Can't get reset: %d\n", ret);

Shouldn't this be printed by the subsystem ?

[...]


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