[PATCH v2 4/5] lib: utils/timer: Allow ACLINT MTIMER supporting only 32-bit MMIO

[Atish Patra]

On Sat, Aug 7, 2021 at 6:34 AM Anup Patel <anup.patel at wdc.com> wrote:
>
> We can have ACLINT MTIMER devices which only support 32-bit MMIO
> accesses on RV64 system so this patch adds a boolean DT property
> "mtimer,no-64bit-mmio" to detect this from MTIMER DT node.
>
> Signed-off-by: Anup Patel <anup.patel at wdc.com>
> ---
>  lib/utils/timer/fdt_timer_mtimer.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/lib/utils/timer/fdt_timer_mtimer.c b/lib/utils/timer/fdt_timer_mtimer.c
> index b08ed38..15a36ed 100644
> --- a/lib/utils/timer/fdt_timer_mtimer.c
> +++ b/lib/utils/timer/fdt_timer_mtimer.c
> @@ -58,6 +58,9 @@ static int timer_mtimer_cold_init(void *fdt, int nodeoff,
>                 mt->mtime_size = size[0];
>                 mt->mtimecmp_addr = addr[1];
>                 mt->mtimecmp_size = size[1];
> +               /* Parse additional ACLINT MTIMER properties */
> +               if (fdt_getprop(fdt, nodeoff, "mtimer,no-64bit-mmio", &rc))
> +                       mt->has_64bit_mmio = false;
>         }
>
>         rc = aclint_mtimer_cold_init(mt, mtmaster);
> --
> 2.25.1
>
>
> --
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Reviewed-by: Atish Patra <atish.patra at wdc.com>

-- 
Regards,
Atish