xref: /openbmc/linux/include/soc/arc/timers.h (revision 55fd7e02)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) 2016-17 Synopsys, Inc. (www.synopsys.com)
4  */
5 
6 #ifndef __SOC_ARC_TIMERS_H
7 #define __SOC_ARC_TIMERS_H
8 
9 #include <soc/arc/aux.h>
10 
11 /* Timer related Aux registers */
12 #define ARC_REG_TIMER0_LIMIT	0x23	/* timer 0 limit */
13 #define ARC_REG_TIMER0_CTRL	0x22	/* timer 0 control */
14 #define ARC_REG_TIMER0_CNT	0x21	/* timer 0 count */
15 #define ARC_REG_TIMER1_LIMIT	0x102	/* timer 1 limit */
16 #define ARC_REG_TIMER1_CTRL	0x101	/* timer 1 control */
17 #define ARC_REG_TIMER1_CNT	0x100	/* timer 1 count */
18 
19 /* CTRL reg bits */
20 #define TIMER_CTRL_IE	        (1 << 0) /* Interrupt when Count reaches limit */
21 #define TIMER_CTRL_NH	        (1 << 1) /* Count only when CPU NOT halted */
22 
23 #define ARC_TIMERN_MAX		0xFFFFFFFF
24 
25 #define ARC_REG_TIMERS_BCR	0x75
26 
27 struct bcr_timer {
28 #ifdef CONFIG_CPU_BIG_ENDIAN
29 	unsigned int pad2:15, rtsc:1, pad1:5, rtc:1, t1:1, t0:1, ver:8;
30 #else
31 	unsigned int ver:8, t0:1, t1:1, rtc:1, pad1:5, rtsc:1, pad2:15;
32 #endif
33 };
34 
35 #endif
36