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drivers/clocksource/timer-sp.h 1.14 KB
ba02a2154   Russell King   ARM: Improve docu...
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  /*
   * 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.
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   *
   * Every SP804 contains two identical timers.
ba02a2154   Russell King   ARM: Improve docu...
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   */
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  #define TIMER_1_BASE	0x00
  #define TIMER_2_BASE	0x20
ba02a2154   Russell King   ARM: Improve docu...
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  #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 */
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ba02a2154   Russell King   ARM: Improve docu...
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  #define TIMER_INTCLR	0x0c			/* ACVR wo */
  #define TIMER_RIS	0x10			/*  CVR ro */
  #define TIMER_MIS	0x14			/*  CVR ro */
  #define TIMER_BGLOAD	0x18			/*  CVR rw */