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 <spl.h>
   9 #include <linux/bitops.h>
  10 #include <linux/io.h>
  11
  12 #include "../init.h"
  13 #include "../sc64-regs.h"
  14 #include "../sg-regs.h"
  15
  16 void uniphier_ld11_clk_init(void)
  17 {
  18         /* if booted from a device other than USB, without stand-by MPU */
  19         if ((readl(SG_PINMON0) & BIT(27)) &&
  20             uniphier_boot_device_raw() != BOOT_DEVICE_USB) {
  21                 writel(1, SG_ETPHYPSHUT);
  22                 writel(1, SG_ETPHYCNT);
  23
  24                 udelay(1); /* wait for regulator level 1.1V -> 2.5V */
  25
  26                 writel(3, SG_ETPHYCNT);
  27                 writel(3, SG_ETPHYPSHUT);
  28                 writel(7, SG_ETPHYCNT);
  29         }
  30
  31 #ifdef CONFIG_USB_EHCI
  32         {
  33                 /* FIXME: the current clk driver can not handle parents */
  34                 u32 tmp;
  35                 tmp = readl(SC_CLKCTRL4);
  36                 tmp |= SC_CLKCTRL4_MIO | SC_CLKCTRL4_STDMAC;
  37                 writel(tmp, SC_CLKCTRL4);
  38         }
  39 #endif
  40 }