espi_util.c

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <amdblocks/spi.h>
#include <soc/espi.h>
#include <types.h>
 
#define ESPI_CNTRL_REGISTER     0x10
#define  LOCK_SPIX10_BIT2       BIT(3)
#define  ESPI_MUX_SPI1          BIT(2)
#define  ROM_ADDR_WR_PROT       BIT(1)
#define  DIS_ESPI_MASCTL_REG_WR BIT(0)
 
void espi_switch_to_spi1_pads(void)
{
        uint8_t reg = spi_read8(ESPI_CNTRL_REGISTER);
 
        reg |= ESPI_MUX_SPI1;
 
        spi_write8(ESPI_CNTRL_REGISTER, reg);
}