diff options
Diffstat (limited to 'plat/mediatek/mt6795/plat_delay_timer.c')
-rw-r--r-- | plat/mediatek/mt6795/plat_delay_timer.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/plat/mediatek/mt6795/plat_delay_timer.c b/plat/mediatek/mt6795/plat_delay_timer.c new file mode 100644 index 00000000..9df28677 --- /dev/null +++ b/plat/mediatek/mt6795/plat_delay_timer.c @@ -0,0 +1,30 @@ +/* + * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <arch_helpers.h> +#include <delay_timer.h> +#include <platform_def.h> + +static uint32_t plat_get_timer_value(void) +{ + /* + * Generic delay timer implementation expects the timer to be a down + * counter. We apply bitwise NOT operator to the tick values returned + * by read_cntpct_el0() to simulate the down counter. + */ + return (uint32_t)(~read_cntpct_el0()); +} + +static const timer_ops_t plat_timer_ops = { + .get_timer_value = plat_get_timer_value, + .clk_mult = 1, + .clk_div = SYS_COUNTER_FREQ_IN_MHZ, +}; + +void plat_delay_timer_init(void) +{ + timer_init(&plat_timer_ops); +} |