linux-imx

/* SPDX-License-Identifier: GPL-2.0 */

/*

 * ARM timer implementation, found in Integrator, Versatile and Realview

 * platforms.  Not all platforms support all registers and bits in these

 * registers, so we mark them with A for Integrator AP, C for Integrator

 * CP, V for Versatile and R for Realview.

 *

 * Integrator AP has 16-bit timers, Integrator CP, Versatile and Realview

 * can have 16-bit or 32-bit selectable via a bit in the control register.

 *

 * Every SP804 contains two identical timers.

 */

#define TIMER_1_BASE    0x00

#define TIMER_2_BASE    0x20

​

#define TIMER_LOAD  0x00            /* ACVR rw */

#define TIMER_VALUE 0x04            /* ACVR ro */

#define TIMER_CTRL  0x08            /* ACVR rw */

#define TIMER_CTRL_ONESHOT  (1 << 0)    /*  CVR */

#define TIMER_CTRL_32BIT    (1 << 1)    /*  CVR */

#define TIMER_CTRL_DIV1     (0 << 2)    /* ACVR */

#define TIMER_CTRL_DIV16    (1 << 2)    /* ACVR */

#define TIMER_CTRL_DIV256   (2 << 2)    /* ACVR */

#define TIMER_CTRL_IE       (1 << 5)    /*   VR */

#define TIMER_CTRL_PERIODIC (1 << 6)    /* ACVR */

#define TIMER_CTRL_ENABLE   (1 << 7)    /* ACVR */

​

#define TIMER_INTCLR    0x0c            /* ACVR wo */

#define TIMER_RIS   0x10            /*  CVR ro */

#define TIMER_MIS   0x14            /*  CVR ro */

#define TIMER_BGLOAD    0x18            /*  CVR rw */