include/asm-arm/arch-omap/system.h

   1 /*
   2  * Copied from linux/include/asm-arm/arch-sa1100/system.h
   3  * Copyright (c) 1999 Nicolas Pitre <nico@cam.org>
   4  */
   5 #ifndef __ASM_ARCH_SYSTEM_H
   6 #define __ASM_ARCH_SYSTEM_H
   7 #include <linux/clk.h>
   8
   9 #include <asm/mach-types.h>
  10 #include <asm/hardware.h>
  11
  12 #ifndef CONFIG_MACH_VOICEBLUE
  13 #define voiceblue_reset()               do {} while (0)
  14 #endif
  15
  16 extern void omap_prcm_arch_reset(char mode);
  17
  18 static inline void arch_idle(void)
  19 {
  20         cpu_do_idle();
  21 }
  22
  23 static inline void omap1_arch_reset(char mode)
  24 {
  25         /*
  26          * Workaround for 5912/1611b bug mentioned in sprz209d.pdf p. 28
  27          * "Global Software Reset Affects Traffic Controller Frequency".
  28          */
  29         if (cpu_is_omap5912()) {
  30                 omap_writew(omap_readw(DPLL_CTL) & ~(1 << 4),
  31                                  DPLL_CTL);
  32                 omap_writew(0x8, ARM_RSTCT1);
  33         }
  34
  35         if (machine_is_voiceblue())
  36                 voiceblue_reset();
  37         else
  38                 omap_writew(1, ARM_RSTCT1);
  39 }
  40
  41 static inline void arch_reset(char mode)
  42 {
  43         if (!cpu_is_omap24xx())
  44                 omap1_arch_reset(mode);
  45         else
  46                 omap_prcm_arch_reset(mode);
  47 }
  48
  49 #endif