mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 14:14:01 +08:00
49d8c59927
This driver supports Fairchild FAN53555 Digitally Programmable TinyBuck Regulator. The FAN53555 is a step-down switching voltage regulator that delivers a digitally programmable output from an input voltage supply of 2.5V to 5.5V. The output voltage is programmed through an I2C interface. Signed-off-by: Yunfan Zhang <yfzhang@marvell.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
/*
|
|
* fan53555.h - Fairchild Regulator FAN53555 Driver
|
|
*
|
|
* Copyright (C) 2012 Marvell Technology Ltd.
|
|
* Yunfan Zhang <yfzhang@marvell.com>
|
|
*
|
|
* This package is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
*/
|
|
|
|
#ifndef __FAN53555_H__
|
|
|
|
/* VSEL ID */
|
|
enum {
|
|
FAN53555_VSEL_ID_0 = 0,
|
|
FAN53555_VSEL_ID_1,
|
|
};
|
|
|
|
/* Transition slew rate limiting from a low to high voltage.
|
|
* -----------------------
|
|
* Bin |Slew Rate(mV/uS)
|
|
* ------|----------------
|
|
* 000 | 64.00
|
|
* ------|----------------
|
|
* 001 | 32.00
|
|
* ------|----------------
|
|
* 010 | 16.00
|
|
* ------|----------------
|
|
* 011 | 8.00
|
|
* ------|----------------
|
|
* 100 | 4.00
|
|
* ------|----------------
|
|
* 101 | 2.00
|
|
* ------|----------------
|
|
* 110 | 1.00
|
|
* ------|----------------
|
|
* 111 | 0.50
|
|
* -----------------------
|
|
*/
|
|
enum {
|
|
FAN53555_SLEW_RATE_64MV = 0,
|
|
FAN53555_SLEW_RATE_32MV,
|
|
FAN53555_SLEW_RATE_16MV,
|
|
FAN53555_SLEW_RATE_8MV,
|
|
FAN53555_SLEW_RATE_4MV,
|
|
FAN53555_SLEW_RATE_2MV,
|
|
FAN53555_SLEW_RATE_1MV,
|
|
FAN53555_SLEW_RATE_0_5MV,
|
|
};
|
|
|
|
struct fan53555_platform_data {
|
|
struct regulator_init_data *regulator;
|
|
unsigned int slew_rate;
|
|
/* Sleep VSEL ID */
|
|
unsigned int sleep_vsel_id;
|
|
};
|
|
|
|
#endif /* __FAN53555_H__ */
|