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 "../sc64-regs.h"
  13 #include "../sg-regs.h"
  14
  15 void uniphier_ld11_clk_init(void)
  16 {
  17         if (readl(SG_PINMON0) & BIT(27)) {
  18                 /* if booted without stand-by MPU */
  19
  20                 writel(1, SG_ETPHYPSHUT);
  21                 writel(1, SG_ETPHYCNT);
  22
  23                 udelay(1); /* wait for regulator level 1.1V -> 2.5V */
  24
  25                 writel(3, SG_ETPHYCNT);
  26                 writel(3, SG_ETPHYPSHUT);
  27                 writel(7, SG_ETPHYCNT);
  28         }
  29
  30 #ifdef CONFIG_USB_EHCI
  31         {
  32                 /* FIXME: the current clk driver can not handle parents */
  33                 u32 tmp;
  34                 tmp = readl(SC_CLKCTRL4);
  35                 tmp |= SC_CLKCTRL4_MIO | SC_CLKCTRL4_STDMAC;
  36                 writel(tmp, SC_CLKCTRL4);
  37         }
  38 #endif
  39 }