src/mainboard/erying/tgl/bootblock.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <bootblock_common.h>
   4 #include <superio/ite/common/ite.h>
   5 #include <superio/ite/it8613e/it8613e.h>
   6 #include <gpio.h>
   7
   8 #define GPIO_DEV PNP_DEV(0x2e, IT8613E_GPIO)
   9 #define UART_DEV PNP_DEV(0x2e, IT8613E_SP1)
  10
  11 void bootblock_mainboard_early_init(void)
  12 {
  13         ite_reg_write(GPIO_DEV, 0x29, 0xc1); /* 3VSB - RAM loses power in S3 anyway */
  14         ite_reg_write(GPIO_DEV, 0x2c, 0x41); /* disable k8 power seq */
  15         ite_enable_serial(UART_DEV, CONFIG_TTYS0_BASE);
  16 }