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From: Michal Simek <michal.simek@amd.com>
To: Ovidiu Panait <ovpanait@gmail.com>, <u-boot@lists.denx.de>
Subject: Re: [PATCH 3/3] timer: xilinx-timer: use timer_conv_64() to fix timer wrap around
Date: Tue, 25 Oct 2022 11:32:48 +0200	[thread overview]
Message-ID: <1ae64c90-2fe7-2b1b-5554-511a3d014b2e@amd.com> (raw)
In-Reply-To: <20221012053656.1492457-3-ovpanait@gmail.com>



On 10/12/22 07:36, Ovidiu Panait wrote:
> Current xilinx_timer_get_count() implementation does not take into account
> the periodic 32-bit wrap arounds, as it directly returns the 32-bit counter
> register value. The roll-overs cause problems in the upper timer layers, as
> generic timer code expects an incrementing 64-bit value from get_count() to
> work correctly.
> 
> Add the missing 64-bit up-conversion to fix random hangs/delays in
> __udelay().
> 
> Fixes: a36d86720f ("microblaze: Convert axi timer to DM driver")
> Signed-off-by: Ovidiu Panait <ovpanait@gmail.com>
> ---
> 
>   drivers/timer/xilinx-timer.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/timer/xilinx-timer.c b/drivers/timer/xilinx-timer.c
> index 75b4473b63..172fd9f929 100644
> --- a/drivers/timer/xilinx-timer.c
> +++ b/drivers/timer/xilinx-timer.c
> @@ -40,7 +40,7 @@ static u64 xilinx_timer_get_count(struct udevice *dev)
>   
>   	regmap_read(priv->regs, TIMER_COUNTER_OFFSET, &value);
>   
> -	return value;
> +	return timer_conv_64(value);
>   }
>   
>   static int xilinx_timer_probe(struct udevice *dev)

Applied all.
M

  parent reply	other threads:[~2022-10-25  9:33 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-12  5:36 [PATCH 1/3] timer-uclass: add timer_get_ops() macro Ovidiu Panait
2022-10-12  5:36 ` [PATCH 2/3] timer-uclass: relocate ops pointers for CONFIG_NEEDS_MANUAL_RELOC Ovidiu Panait
2022-10-12 12:59   ` Simon Glass
2022-10-12 15:21     ` Ovidiu Panait
2022-10-12  5:36 ` [PATCH 3/3] timer: xilinx-timer: use timer_conv_64() to fix timer wrap around Ovidiu Panait
2022-10-12  8:58   ` Michal Simek
2022-10-25  9:32   ` Michal Simek [this message]
2022-10-12 12:59 ` [PATCH 1/3] timer-uclass: add timer_get_ops() macro Simon Glass

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