uboot-phytec

// SPDX-License-Identifier: GPL-2.0-or-later

/*

 * Copyright (C) 2019 ROHM Semiconductors

 *

 * ROHM BD71837 regulator driver

 */

​

#include <common.h>

#include <dm.h>

#include <power/bd71837.h>

#include <power/pmic.h>

#include <power/regulator.h>

​

#define HW_STATE_CONTROL 0

#define DEBUG

​

/**

 * struct bd71837_vrange - describe linear range of voltages

 *

 * @min_volt:   smallest voltage in range

 * @step:   how much voltage changes at each selector step

 * @min_sel:    smallest selector in the range

 * @max_sel:    maximum selector in the range

 * @rangeval:   register value used to select this range if selectible

 *      ranges are supported

 */

struct bd71837_vrange {

    unsigned int    min_volt;

    unsigned int    step;

    u8      min_sel;

    u8      max_sel;

    u8      rangeval;

};

​

/**

 * struct bd71837_platdata - describe regulator control registers

 *

 * @name:   name of the regulator. Used for matching the dt-entry

 * @enable_reg: register address used to enable/disable regulator

 * @enablemask: register mask used to enable/disable regulator

 * @volt_reg:   register address used to configure regulator voltage

 * @volt_mask:  register mask used to configure regulator voltage

 * @ranges: pointer to ranges of regulator voltages and matching register

 *      values

 * @numranges:  number of voltage ranges pointed by ranges

 * @rangemask:  mask for selecting used ranges if multiple ranges are supported

 * @sel_mask:   bit to toggle in order to transfer the register control to SW

 * @dvs:    whether the voltage can be changed when regulator is enabled

 */

struct bd71837_platdata {

    const char      *name;

    u8          enable_reg;

    u8          enablemask;

    u8          volt_reg;

    u8          volt_mask;

    struct bd71837_vrange   *ranges;

    unsigned int        numranges;

    u8          rangemask;

    u8          sel_mask;

    bool            dvs;

};

​

#define BD_RANGE(_min, _vstep, _sel_low, _sel_hi, _range_sel) \

{ \

    .min_volt = (_min), .step = (_vstep), .min_sel = (_sel_low), \

    .max_sel = (_sel_hi), .rangeval = (_range_sel) \

}

​

#define BD_DATA(_name, enreg, enmask, vreg, vmask, _range, rmask, _dvs, sel) \

{ \

    .name = (_name), .enable_reg = (enreg), .enablemask = (enmask), \

    .volt_reg = (vreg), .volt_mask = (vmask), .ranges = (_range), \

    .numranges = ARRAY_SIZE(_range), .rangemask = (rmask), .dvs = (_dvs), \

    .sel_mask = (sel) \

}

​

static struct bd71837_vrange dvs_buck_vranges[] = {

    BD_RANGE(700000, 10000, 0, 0x3c, 0),

    BD_RANGE(1300000, 0, 0x3d, 0x3f, 0),

};

​

static struct bd71837_vrange bd71847_buck3_vranges[] = {

    BD_RANGE(700000, 100000, 0x00, 0x03, 0),

    BD_RANGE(1050000, 50000, 0x04, 0x05, 0),

    BD_RANGE(1200000, 150000, 0x06, 0x07, 0),

    BD_RANGE(550000, 50000, 0x0, 0x7, 0x40),

    BD_RANGE(675000, 100000, 0x0, 0x3, 0x80),

    BD_RANGE(1025000, 50000, 0x4, 0x5, 0x80),

    BD_RANGE(1175000, 150000, 0x6, 0x7, 0x80),

};

​

static struct bd71837_vrange bd71847_buck4_vranges[] = {