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 */