1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * ARM timer implementation, found in Integrator, Versatile and Realview
4  * platforms.  Not all platforms support all registers and bits in these
5  * registers, so we mark them with A for Integrator AP, C for Integrator
6  * CP, V for Versatile and R for Realview.
7  *
8  * Integrator AP has 16-bit timers, Integrator CP, Versatile and Realview
9  * can have 16-bit or 32-bit selectable via a bit in the control register.
10  *
11  * Every SP804 contains two identical timers.
12  */
13 #define TIMER_1_BASE	0x00
14 #define TIMER_2_BASE	0x20
15 
16 #define TIMER_LOAD	0x00			/* ACVR rw */
17 #define TIMER_VALUE	0x04			/* ACVR ro */
18 #define TIMER_CTRL	0x08			/* ACVR rw */
19 #define TIMER_CTRL_ONESHOT	(1 << 0)	/*  CVR */
20 #define TIMER_CTRL_32BIT	(1 << 1)	/*  CVR */
21 #define TIMER_CTRL_DIV1		(0 << 2)	/* ACVR */
22 #define TIMER_CTRL_DIV16	(1 << 2)	/* ACVR */
23 #define TIMER_CTRL_DIV256	(2 << 2)	/* ACVR */
24 #define TIMER_CTRL_IE		(1 << 5)	/*   VR */
25 #define TIMER_CTRL_PERIODIC	(1 << 6)	/* ACVR */
26 #define TIMER_CTRL_ENABLE	(1 << 7)	/* ACVR */
27 
28 #define TIMER_INTCLR	0x0c			/* ACVR wo */
29 #define TIMER_RIS	0x10			/*  CVR ro */
30 #define TIMER_MIS	0x14			/*  CVR ro */
31 #define TIMER_BGLOAD	0x18			/*  CVR rw */
32