src/mainboard/google/skyrim/spi_speeds.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #include <amdblocks/spi.h>
   4 #include <boardid.h>
   5 #include <stdint.h>
   6
   7 void mainboard_spi_cfg_override(uint8_t *fast_speed, uint8_t *read_mode)
   8 {
   9         uint32_t board_ver = board_id();
  10
  11         if (board_ver >= CONFIG_OVERRIDE_EFS_SPI_SPEED_MIN_BOARD)
  12                 *fast_speed = CONFIG_OVERRIDE_EFS_SPI_SPEED;
  13
  14         /*
  15          * Due to a hardware limitation, Dual I/O 1-2-2 Read mode is supported starting
  16          * board version 3. This hardware limitation applies only to Skyrim reference
  17          * design.
  18          */
  19         if (CONFIG(BOARD_GOOGLE_SKYRIM) && board_ver >= 3)
  20                 *read_mode = SPI_READ_MODE_DUAL122;
  21 }