From b35f7826b019623d096b6b5c1803232818834e5b Mon Sep 17 00:00:00 2001 From: Anup Patel <anup.patel@wdc.com> Date: Sat, 24 Jul 2021 10:29:56 +0530 Subject: lib: utils/timer: Allow ACLINT MTIMER supporting only 32-bit MMIO 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@wdc.com> Reviewed-by: Atish Patra <atish.patra@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); -- cgit v1.2.3