arch/powerpc/platforms/86xx/common.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Routines common to most mpc86xx-based boards.
   4  */
   5
   6 #include <linux/of_platform.h>
   7 #include <asm/synch.h>
   8
   9 #include "mpc86xx.h"
  10
  11 static const struct of_device_id mpc86xx_common_ids[] __initconst = {
  12         { .type = "soc", },
  13         { .compatible = "soc", },
  14         { .compatible = "simple-bus", },
  15         { .name = "localbus", },
  16         { .compatible = "gianfar", },
  17         { .compatible = "fsl,mpc8641-pcie", },
  18         {},
  19 };
  20
  21 int __init mpc86xx_common_publish_devices(void)
  22 {
  23         return of_platform_bus_probe(NULL, mpc86xx_common_ids, NULL);
  24 }
  25
  26 long __init mpc86xx_time_init(void)
  27 {
  28         unsigned int temp;
  29
  30         /* Set the time base to zero */
  31         mtspr(SPRN_TBWL, 0);
  32         mtspr(SPRN_TBWU, 0);
  33
  34         temp = mfspr(SPRN_HID0);
  35         temp |= HID0_TBEN;
  36         mtspr(SPRN_HID0, temp);
  37         isync();
  38
  39         return 0;
  40 }