arch/arm/mach-at91/armv7/sama5d4_devices.c

   1 /*
   2  * Copyright (C) 2014 Atmel
   3  *                    Bo Shen <voice.shen@atmel.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/io.h>
  10 #include <asm/arch/at91_common.h>
  11 #include <asm/arch/at91_pmc.h>
  12 #include <asm/arch/clk.h>
  13 #include <asm/arch/sama5_sfr.h>
  14 #include <asm/arch/sama5d4.h>
  15
  16 char *get_cpu_name()
  17 {
  18         unsigned int extension_id = get_extension_chip_id();
  19
  20         if (cpu_is_sama5d4())
  21                 switch (extension_id) {
  22                 case ARCH_EXID_SAMA5D41:
  23                         return "SAMA5D41";
  24                 case ARCH_EXID_SAMA5D42:
  25                         return "SAMA5D42";
  26                 case ARCH_EXID_SAMA5D43:
  27                         return "SAMA5D43";
  28                 case ARCH_EXID_SAMA5D44:
  29                         return "SAMA5D44";
  30                 default:
  31                         return "Unknown CPU type";
  32                 }
  33         else
  34                 return "Unknown CPU type";
  35 }
  36
  37 #ifdef CONFIG_USB_GADGET_ATMEL_USBA
  38 void at91_udp_hw_init(void)
  39 {
  40         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
  41
  42         /* Enable UPLL clock */
  43         writel(AT91_PMC_UPLLEN | AT91_PMC_BIASEN, &pmc->uckr);
  44         /* Enable UDPHS clock */
  45         at91_periph_clk_enable(ATMEL_ID_UDPHS);
  46 }
  47 #endif
  48
  49 #ifdef CONFIG_SPL_BUILD
  50 void redirect_int_from_saic_to_aic(void)
  51 {
  52         struct atmel_sfr *sfr = (struct atmel_sfr *)ATMEL_BASE_SFR;
  53         u32 key32;
  54
  55         if (!(readl(&sfr->aicredir) & ATMEL_SFR_AICREDIR_NSAIC)) {
  56                 key32 = readl(&sfr->sn1) ^ ATMEL_SFR_AICREDIR_KEY;
  57                 writel((key32 | ATMEL_SFR_AICREDIR_NSAIC), &sfr->aicredir);
  58         }
  59 }
  60 #endif