arch/arm/cpu/arm926ejs/spear/cpu.c

   1 /*
   2  * (C) Copyright 2010
   3  * Vipin Kumar, ST Micoelectronics, [email protected].
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/io.h>
  10 #include <asm/arch/hardware.h>
  11 #include <asm/arch/spr_misc.h>
  12
  13 int arch_cpu_init(void)
  14 {
  15         struct misc_regs *const misc_p =
  16             (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
  17         u32 periph1_clken, periph_clk_cfg;
  18
  19         periph1_clken = readl(&misc_p->periph1_clken);
  20
  21 #if defined(CONFIG_SPEAR3XX)
  22         periph1_clken |= MISC_GPT2ENB;
  23 #elif defined(CONFIG_SPEAR600)
  24         periph1_clken |= MISC_GPT3ENB;
  25 #endif
  26
  27 #if defined(CONFIG_PL011_SERIAL)
  28         periph1_clken |= MISC_UART0ENB;
  29
  30         periph_clk_cfg = readl(&misc_p->periph_clk_cfg);
  31         periph_clk_cfg &= ~CONFIG_SPEAR_UARTCLKMSK;
  32         periph_clk_cfg |= CONFIG_SPEAR_UART48M;
  33         writel(periph_clk_cfg, &misc_p->periph_clk_cfg);
  34 #endif
  35 #if defined(CONFIG_ETH_DESIGNWARE)
  36         periph1_clken |= MISC_ETHENB;
  37 #endif
  38 #if defined(CONFIG_DW_UDC)
  39         periph1_clken |= MISC_USBDENB;
  40 #endif
  41 #if defined(CONFIG_SYS_I2C_DW)
  42         periph1_clken |= MISC_I2CENB;
  43 #endif
  44 #if defined(CONFIG_ST_SMI)
  45         periph1_clken |= MISC_SMIENB;
  46 #endif
  47 #if defined(CONFIG_NAND_FSMC)
  48         periph1_clken |= MISC_FSMCENB;
  49 #endif
  50
  51         writel(periph1_clken, &misc_p->periph1_clken);
  52         return 0;
  53 }
  54
  55 #ifdef CONFIG_DISPLAY_CPUINFO
  56 int print_cpuinfo(void)
  57 {
  58 #ifdef CONFIG_SPEAR300
  59         printf("CPU:   SPEAr300\n");
  60 #elif defined(CONFIG_SPEAR310)
  61         printf("CPU:   SPEAr310\n");
  62 #elif defined(CONFIG_SPEAR320)
  63         printf("CPU:   SPEAr320\n");
  64 #elif defined(CONFIG_SPEAR600)
  65         printf("CPU:   SPEAr600\n");
  66 #else
  67 #error CPU not supported in spear platform
  68 #endif
  69         return 0;
  70 }
  71 #endif