ramstage.c

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <delay.h>
#include <gpio.h>
#include <baseboard/variants.h>
#include <soc/gpio.h>
 
void variant_ramstage_init(void)
{
        /*
         * Assert FPMCU reset and enable power to FPMCU,
         * wait for power rail to stabilize,
         * and then deassert FPMCU reset.
         * Waiting for the power rail to stabilize can take a while.
         */
        gpio_output(GPP_C23, 0);
        gpio_output(GPP_A21, 1);
        mdelay(1);
        gpio_output(GPP_C23, 1);
}