arch/arm/mach-uniphier/clk/clk-ld11.c

   1 /*
   2  * Copyright (C) 2016 Socionext Inc.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <linux/bitops.h>
   9 #include <linux/io.h>
  10
  11 #include "../init.h"
  12 #include "../sg-regs.h"
  13
  14 void uniphier_ld11_clk_init(void)
  15 {
  16         if (readl(SG_PINMON0) & BIT(27)) {
  17                 /* if booted without stand-by MPU */
  18
  19                 writel(1, SG_ETPHYPSHUT);
  20                 writel(1, SG_ETPHYCNT);
  21
  22                 udelay(1); /* wait for regulator level 1.1V -> 2.5V */
  23
  24                 writel(3, SG_ETPHYCNT);
  25                 writel(3, SG_ETPHYPSHUT);
  26                 writel(7, SG_ETPHYCNT);
  27         }
  28 }