LXR uboot/board/toradex/verdin-imx8mm/verdin-imx8mm.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright 2020-2021 Toradex
   4 */
   5
   6#include <common.h>
   7#include <init.h>
   8#include <asm/arch/clock.h>
   9#include <asm/arch/sys_proto.h>
  10#include <asm/global_data.h>
  11#include <asm/io.h>
  12#include <hang.h>
  13#include <i2c.h>
  14#include <micrel.h>
  15#include <miiphy.h>
  16#include <netdev.h>
  17
  18#include "../common/tdx-cfg-block.h"
  19
  20DECLARE_GLOBAL_DATA_PTR;
  21
  22#define I2C_PMIC        0
  23
  24enum pcb_rev_t {
  25        PCB_VERSION_1_0,
  26        PCB_VERSION_1_1
  27};
  28
  29#if IS_ENABLED(CONFIG_FEC_MXC)
  30static int setup_fec(void)
  31{
  32        struct iomuxc_gpr_base_regs *gpr =
  33                (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
  34
  35        /* Use 125M anatop REF_CLK1 for ENET1, not from external */
  36        clrsetbits_le32(&gpr->gpr[1], 0x2000, 0);
  37
  38        return 0;
  39}
  40#endif
  41
  42int board_init(void)
  43{
  44        if (IS_ENABLED(CONFIG_FEC_MXC))
  45                setup_fec();
  46
  47        return 0;
  48}
  49
  50int board_mmc_get_env_dev(int devno)
  51{
  52        return devno;
  53}
  54
  55static enum pcb_rev_t get_pcb_revision(void)
  56{
  57        struct udevice *bus;
  58        struct udevice *i2c_dev = NULL;
  59        int ret;
  60        u8 is_bd71837 = 0;
  61
  62        ret = uclass_get_device_by_seq(UCLASS_I2C, I2C_PMIC, &bus);
  63        if (!ret)
  64                ret = dm_i2c_probe(bus, 0x4b, 0, &i2c_dev);
  65        if (!ret)
  66                ret = dm_i2c_read(i2c_dev, 0x0, &is_bd71837, 1);
  67
  68        /* BD71837_REV, High Nibble is major version, fix 1010 */
  69        is_bd71837 = !ret && ((is_bd71837 & 0xf0) == 0xa0);
  70        return is_bd71837 ? PCB_VERSION_1_0 : PCB_VERSION_1_1;
  71}
  72
  73static void select_dt_from_module_version(void)
  74{
  75        char variant[32];
  76        char *env_variant = env_get("variant");
  77        int is_wifi = 0;
  78
  79        if (IS_ENABLED(CONFIG_TDX_CFG_BLOCK)) {
  80                /*
  81                 * If we have a valid config block and it says we are a
  82                 * module with Wi-Fi/Bluetooth make sure we use the -wifi
  83                 * device tree.
  84                 */
  85                is_wifi = (tdx_hw_tag.prodid == VERDIN_IMX8MMQ_WIFI_BT_IT) ||
  86                          (tdx_hw_tag.prodid == VERDIN_IMX8MMDL_WIFI_BT_IT);
  87        }
  88
  89        switch (get_pcb_revision()) {
  90        case PCB_VERSION_1_0:
  91                printf("Detected a V1.0 module which is no longer supported in this BSP version\n");
  92                hang();
  93        default:
  94                if (is_wifi)
  95                        strlcpy(&variant[0], "wifi", sizeof(variant));
  96                else
  97                        strlcpy(&variant[0], "nonwifi", sizeof(variant));
  98                break;
  99        }
 100
 101        if (strcmp(variant, env_variant)) {
 102                printf("Setting variant to %s\n", variant);
 103                env_set("variant", variant);
 104
 105                if (IS_ENABLED(CONFIG_ENV_IS_NOWHERE))
 106                        env_save();
 107        }
 108}
 109
 110int board_late_init(void)
 111{
 112        select_dt_from_module_version();
 113
 114        return 0;
 115}
 116
 117int board_phys_sdram_size(phys_size_t *size)
 118{
 119        if (!size)
 120                return -EINVAL;
 121
 122        *size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
 123
 124        return 0;
 125}
 126
 127#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
 128int ft_board_setup(void *blob, struct bd_info *bd)
 129{
 130        return 0;
 131}
 132#endif
 133