On Wed, 07 Nov 2018 16:04:41 +0100 Marek Szyprowski <m.szyprow...@samsung.com> wrote:
> Some boards use legacy firmware which doesn't properly configure ARM
> architected timer registers. This patch adds a workaround to use the
> defined COUNTER_FREQUENCY instead of reading its value from the timer
> registers.
>
> Signed-off-by: Marek Szyprowski <m.szyprow...@samsung.com>
> ---
> arch/arm/cpu/armv8/generic_timer.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/arm/cpu/armv8/generic_timer.c
> b/arch/arm/cpu/armv8/generic_timer.c index c1706dcec1..5ac62a0a32
> 100644 --- a/arch/arm/cpu/armv8/generic_timer.c
> +++ b/arch/arm/cpu/armv8/generic_timer.c
> @@ -15,9 +15,13 @@ DECLARE_GLOBAL_DATA_PTR;
> */
> unsigned long get_tbclk(void)
> {
> +#ifndef COUNTER_FREQUENCY
> unsigned long cntfrq;
> asm volatile("mrs %0, cntfrq_el0" : "=r" (cntfrq));
> return cntfrq;
> +#else
> + return COUNTER_FREQUENCY;
> +#endif
> }
>
> #ifdef CONFIG_SYS_FSL_ERRATUM_A008585
Have something changed - or there still is no errata for this?
The COUNTER_FREQUENCY is declared in include/configs/tm2.h, but shall
be moved to Kconfig.
Otherwise looks correct.
Best regards,
Lukasz Majewski
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lu...@denx.de
pgp0dK8B3VqGr.pgp
Description: OpenPGP digital signature
_______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
