git.sur5r.net Git - u-boot/blob - arch/arm/mach-uniphier/clk/clk-ld4.c

   1 /*
   2  * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <linux/io.h>
   8
   9 #include "../init.h"
  10 #include "../sc-regs.h"
  11
  12 void ph1_ld4_clk_init(void)
  13 {
  14         u32 tmp;
  15
  16         /* deassert reset */
  17         tmp = readl(SC_RSTCTRL);
  18 #ifdef CONFIG_UNIPHIER_ETH
  19         tmp |= SC_RSTCTRL_NRST_ETHER;
  20 #endif
  21 #ifdef CONFIG_USB_EHCI
  22         tmp |= SC_RSTCTRL_NRST_STDMAC;
  23 #endif
  24 #ifdef CONFIG_NAND_DENALI
  25         tmp |= SC_RSTCTRL_NRST_NAND;
  26 #endif
  27         writel(tmp, SC_RSTCTRL);
  28         readl(SC_RSTCTRL); /* dummy read */
  29
  30         /* privide clocks */
  31         tmp = readl(SC_CLKCTRL);
  32 #ifdef CONFIG_UNIPHIER_ETH
  33         tmp |= SC_CLKCTRL_CEN_ETHER;
  34 #endif
  35 #ifdef CONFIG_USB_EHCI
  36         tmp |= SC_CLKCTRL_CEN_MIO | SC_CLKCTRL_CEN_STDMAC;
  37 #endif
  38 #ifdef CONFIG_NAND_DENALI
  39         tmp |= SC_CLKCTRL_CEN_NAND;
  40 #endif
  41         writel(tmp, SC_CLKCTRL);
  42         readl(SC_CLKCTRL); /* dummy read */
  43 }