arch/arm/mach-omap1/reset.c

   1 /*
   2  * OMAP1 reset support
   3  */
   4 #include <linux/kernel.h>
   5 #include <linux/io.h>
   6
   7 #include <mach/hardware.h>
   8 #include <mach/system.h>
   9 #include <plat/prcm.h>
  10
  11 void omap1_arch_reset(char mode, const char *cmd)
  12 {
  13         /*
  14          * Workaround for 5912/1611b bug mentioned in sprz209d.pdf p. 28
  15          * "Global Software Reset Affects Traffic Controller Frequency".
  16          */
  17         if (cpu_is_omap5912()) {
  18                 omap_writew(omap_readw(DPLL_CTL) & ~(1 << 4), DPLL_CTL);
  19                 omap_writew(0x8, ARM_RSTCT1);
  20         }
  21
  22         omap_writew(1, ARM_RSTCT1);
  23 }
  24
  25 void (*arch_reset)(char, const char *) = omap1_arch_reset;