uboot-phytec

// SPDX-License-Identifier: GPL-2.0+

/*

 * Copyright (c) 2009 Wind River Systems, Inc.

 * Tom Rix <Tom.Rix at windriver.com>

 *

 * twl4030_power_reset_init is derived from code on omapzoom,

 * git://git.omapzoom.com/repo/u-boot.git

 *

 * Copyright (C) 2007-2009 Texas Instruments, Inc.

 *

 * twl4030_power_init is from cpu/omap3/common.c, power_init_r

 *

 * (C) Copyright 2004-2008

 * Texas Instruments, <www.ti.com>

 *

 * Author :

 *  Sunil Kumar <sunilsaini05 at gmail.com>

 *  Shashi Ranjan <shashiranjanmca05 at gmail.com>

 *

 * Derived from Beagle Board and 3430 SDP code by

 *  Richard Woodruff <r-woodruff2 at ti.com>

 *  Syed Mohammed Khasim <khasim at ti.com>

 */

​

#include <twl4030.h>

​

/*

 * Power Reset

 */

void twl4030_power_reset_init(void)

{

    u8 val = 0;

    if (twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,

                TWL4030_PM_MASTER_P1_SW_EVENTS, &val)) {

        printf("Error:TWL4030: failed to read the power register\n");

        printf("Could not initialize hardware reset\n");

    } else {

        val |= TWL4030_PM_MASTER_SW_EVENTS_STOPON_PWRON;

        if (twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,

                     TWL4030_PM_MASTER_P1_SW_EVENTS, val)) {

            printf("Error:TWL4030: failed to write the power register\n");

            printf("Could not initialize hardware reset\n");

        }

    }

}

​

/*

 * Power off

 */

void twl4030_power_off(void)

{

    u8 data;

​

    /* PM master unlock (CFG and TST keys) */

​

    data = 0xCE;

    twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,

                 TWL4030_PM_MASTER_PROTECT_KEY, data);

    data = 0xEC;

    twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,

                 TWL4030_PM_MASTER_PROTECT_KEY, data);

​

    /* VBAT start disable */