Re: [PATCH] clocksource: dw_apb_timer_of: support timer-based delay

[Arnd Bergmann]

On Monday 02 November 2015 09:48:38 Daniel Lezcano wrote:
> If I follow the logic of arch_arm_timer is better than dw_apb timer.
> 
> 1. The arch_arm_timer is present
> 
>   => dw_apb timer is not used at all
> 
>   CONFIG_ARM_ARCH_TIMER=y
>   # CONFIG_DW_APB_TIMER is not set
> 
> 2. The arch_arm_timer is *not* present
> 
>   => dw_apb_timer is used with delay code
> 
>   # CONFIG_ARM_ARCH_TIMER is not set
>   CONFIG_DW_APB_TIMER=y
> 
> In both cases, DW_APB_TIMER_BASED_DELAY is not needed.
> 

This still has the same problem that running a multi_v7_defconfig
kernel or a binary distro kernel will always enable both. We really
want to have a good run-time decision, not compile-time.

	Arnd
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/