arch/arm/mach-uniphier/clk/clk-ph1-pro5.c

   1 /*
   2  * Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <linux/io.h>
   8 #include <mach/init.h>
   9 #include <mach/sc-regs.h>
  10
  11 void ph1_pro5_clk_init(void)
  12 {
  13         u32 tmp;
  14
  15         /* deassert reset */
  16         tmp = readl(SC_RSTCTRL);
  17 #ifdef CONFIG_USB_XHCI_UNIPHIER
  18         tmp |= SC_RSTCTRL_NRST_USB3B0 | SC_RSTCTRL_NRST_GIO;
  19 #endif
  20 #ifdef CONFIG_NAND_DENALI
  21         tmp |= SC_RSTCTRL_NRST_NAND;
  22 #endif
  23         writel(tmp, SC_RSTCTRL);
  24         readl(SC_RSTCTRL); /* dummy read */
  25
  26 #ifdef CONFIG_USB_XHCI_UNIPHIER
  27         tmp = readl(SC_RSTCTRL2);
  28         tmp |= SC_RSTCTRL2_NRST_USB3B1;
  29         writel(tmp, SC_RSTCTRL2);
  30         readl(SC_RSTCTRL2); /* dummy read */
  31 #endif
  32
  33         /* privide clocks */
  34         tmp = readl(SC_CLKCTRL);
  35 #ifdef CONFIG_USB_XHCI_UNIPHIER
  36         tmp |= SC_CLKCTRL_CEN_USB31 | SC_CLKCTRL_CEN_USB30 |
  37                 SC_CLKCTRL_CEN_GIO;
  38 #endif
  39 #ifdef CONFIG_NAND_DENALI
  40         tmp |= SC_CLKCTRL_CEN_NAND;
  41 #endif
  42         writel(tmp, SC_CLKCTRL);
  43         readl(SC_CLKCTRL); /* dummy read */
  44 }