board/st/stm32mp1/board.c

   1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
   4  */
   5
   6 #include <common.h>
   7 #include <dm.h>
   8 #include <asm/io.h>
   9 #include <asm/arch/ddr.h>
  10 #include <power/pmic.h>
  11 #include <power/stpmic1.h>
  12
  13 #ifdef CONFIG_DEBUG_UART_BOARD_INIT
  14 void board_debug_uart_init(void)
  15 {
  16 #if (CONFIG_DEBUG_UART_BASE == STM32_UART4_BASE)
  17
  18 #define RCC_MP_APB1ENSETR (STM32_RCC_BASE + 0x0A00)
  19 #define RCC_MP_AHB4ENSETR (STM32_RCC_BASE + 0x0A28)
  20
  21         /* UART4 clock enable */
  22         setbits_le32(RCC_MP_APB1ENSETR, BIT(16));
  23
  24 #define GPIOG_BASE 0x50008000
  25         /* GPIOG clock enable */
  26         writel(BIT(6), RCC_MP_AHB4ENSETR);
  27         /* GPIO configuration for EVAL board
  28          * => Uart4 TX = G11
  29          */
  30         writel(0xffbfffff, GPIOG_BASE + 0x00);
  31         writel(0x00006000, GPIOG_BASE + 0x24);
  32 #else
  33
  34 #error("CONFIG_DEBUG_UART_BASE: not supported value")
  35
  36 #endif
  37 }
  38 #endif
  39
  40 #ifdef CONFIG_PMIC_STPMIC1
  41 int board_ddr_power_init(void)
  42 {
  43         struct udevice *dev;
  44         int ret;
  45
  46         ret = uclass_get_device_by_driver(UCLASS_PMIC,
  47                                           DM_GET_DRIVER(pmic_stpmic1), &dev);
  48         if (ret)
  49                 /* No PMIC on board */
  50                 return 0;
  51
  52         /* VTT = Set LDO3 to sync mode */
  53         ret = pmic_reg_read(dev, STPMIC1_LDOX_MAIN_CR(STPMIC1_LDO3));
  54         if (ret < 0)
  55                 return ret;
  56
  57         ret &= ~STPMIC1_LDO3_MODE;
  58         ret &= ~STPMIC1_LDO12356_VOUT_MASK;
  59         ret |= STPMIC1_LDO_VOUT(STPMIC1_LDO3_DDR_SEL);
  60
  61         ret = pmic_reg_write(dev, STPMIC1_LDOX_MAIN_CR(STPMIC1_LDO3),
  62                              ret);
  63         if (ret < 0)
  64                 return ret;
  65
  66         /* VDD_DDR = Set BUCK2 to 1.35V */
  67         ret = pmic_clrsetbits(dev,
  68                               STPMIC1_BUCKX_MAIN_CR(STPMIC1_BUCK2),
  69                               STPMIC1_BUCK_VOUT_MASK,
  70                               STPMIC1_BUCK2_1350000V);
  71         if (ret < 0)
  72                 return ret;
  73
  74         /* Enable VDD_DDR = BUCK2 */
  75         ret = pmic_clrsetbits(dev,
  76                               STPMIC1_BUCKX_MAIN_CR(STPMIC1_BUCK2),
  77                               STPMIC1_BUCK_ENA, STPMIC1_BUCK_ENA);
  78         if (ret < 0)
  79                 return ret;
  80
  81         mdelay(STPMIC1_DEFAULT_START_UP_DELAY_MS);
  82
  83         /* Enable VREF */
  84         ret = pmic_clrsetbits(dev, STPMIC1_REFDDR_MAIN_CR,
  85                               STPMIC1_VREF_ENA, STPMIC1_VREF_ENA);
  86         if (ret < 0)
  87                 return ret;
  88
  89         mdelay(STPMIC1_DEFAULT_START_UP_DELAY_MS);
  90
  91         /* Enable LDO3 */
  92         ret = pmic_clrsetbits(dev,
  93                               STPMIC1_LDOX_MAIN_CR(STPMIC1_LDO3),
  94                               STPMIC1_LDO_ENA, STPMIC1_LDO_ENA);
  95         if (ret < 0)
  96                 return ret;
  97
  98         mdelay(STPMIC1_DEFAULT_START_UP_DELAY_MS);
  99
 100         return 0;
 101 }
 102 #endif