early_gpio.c

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/* SPDX-License-Identifier: GPL-2.0-only */
#include <soc/gpio.h>
#include "gpio.h"
 
/* GPIO pins used by coreboot should be initialized in bootblock */
 
static const struct soc_amd_gpio gpio_set_stage_reset[] = {
        /* assert PCIe reset */
        PAD_GPO(GPIO_6, HIGH),
        /* not LLB */
        PAD_GPI(GPIO_12, PULL_UP),
        /* not USB_OC1_L */
        PAD_GPI(GPIO_17, PULL_UP),
        /* not USB_OC2_L */
        PAD_GPI(GPIO_18, PULL_UP),
        /* SDIO eMMC power control */
        PAD_NF(GPIO_22, EMMC_PWR_CTRL, PULL_NONE),
        /* PCIe Reset to DP0, DP1, J2105, TP, FP */
        PAD_GPO(GPIO_27, HIGH),
        /* eSPI CS# */
        PAD_NF(GPIO_30, ESPI_CS_L, PULL_NONE),
        /* GPP_10G_SELECT => High=10G, Low=x2 NVME (work with AGPIO89) */
        PAD_GPO(GPIO_42, LOW),
        /* FANOUT0 */
        PAD_NF(GPIO_85, FANOUT0, PULL_NONE),
        /* APU_COMBO_GPP_SW => High=SATA, Low=x2 NVME (work with EGPIO42) */
        PAD_GPO(GPIO_89, LOW),
        /* PC beep to codec */
        PAD_NF(GPIO_91, SPKR, PULL_NONE),
};
 
void mainboard_program_early_gpios(void)
{
        gpio_configure_pads(gpio_set_stage_reset, ARRAY_SIZE(gpio_set_stage_reset));
}