| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright (C) Marvell International Ltd. and its affiliates |
| * Written-by: Prafulla Wadaskar <prafulla@marvell.com> |
| * |
| * Copyright (C) 2015 Stefan Roese <sr@denx.de> |
| */ |
| |
| #include <common.h> |
| #include <init.h> |
| #include <asm/io.h> |
| #include <asm/arch/soc.h> |
| |
| #define TIMER_LOAD_VAL 0xffffffff |
| |
| static int init_done __attribute__((section(".data"))) = 0; |
| |
| /* |
| * Timer initialization |
| */ |
| int timer_init(void) |
| { |
| /* Only init the timer once */ |
| if (init_done) |
| return 0; |
| init_done = 1; |
| |
| /* load value into timer */ |
| writel(TIMER_LOAD_VAL, MVEBU_TIMER_BASE + 0x10); |
| writel(TIMER_LOAD_VAL, MVEBU_TIMER_BASE + 0x14); |
| |
| #if defined(CONFIG_ARCH_MVEBU) |
| /* On Armada XP / 38x ..., the 25MHz clock source needs to be enabled */ |
| setbits_le32(MVEBU_TIMER_BASE + 0x00, BIT(11)); |
| #endif |
| /* enable timer in auto reload mode */ |
| setbits_le32(MVEBU_TIMER_BASE + 0x00, 0x3); |
| |
| return 0; |
| } |