arch/arm/mach-uniphier/clk/clk-ld20.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2017 Socionext Inc.
   4  */
   5
   6 #include <linux/bitops.h>
   7 #include <linux/io.h>
   8
   9 #include "../init.h"
  10 #include "../sc64-regs.h"
  11
  12 #define SDCTRL_EMMC_HW_RESET    0x59810280
  13
  14 void uniphier_ld20_clk_init(void)
  15 {
  16         u32 tmp;
  17
  18         tmp = readl(SC_RSTCTRL6);
  19         tmp |= BIT(8);                  /* Mali */
  20         writel(tmp, SC_RSTCTRL6);
  21
  22         tmp = readl(SC_CLKCTRL6);
  23         tmp |= BIT(8);                  /* Mali */
  24         writel(tmp, SC_CLKCTRL6);
  25
  26         /* TODO: use "mmc-pwrseq-emmc" */
  27         writel(1, SDCTRL_EMMC_HW_RESET);
  28 }