leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

pmic: pmic_mc34vr500: Add a driver for the mc34vr500 pmic

Browse Source 
This patch adds a simple pmic driver for the mc34vr500 pmic which
is used in conjunction with the fsl T1 and LS1 series SoC.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: York Sun <york.sun@nxp.com>
This commit is contained in:
Hou Zhiqiang 2016-12-09 16:08:57 +08:00 committed by York Sun
parent 9cfab06e79
commit 762161b04a
4 changed files with 206 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/power/pmic/Kconfig
View File

@ -164,3 +164,10 @@ config PMIC_LP873X
---help---
The LP873X is a PMIC containing couple of LDOs and couple of SMPS.
This driver binds the pmic children.
config POWER_MC34VR500
bool "Enable driver for Freescale MC34VR500 PMIC"
---help---
The MC34VR500 is used in conjunction with the FSL T1 and LS1 series
SoC. It provides 4 buck DC-DC convertors and 5 LDOs, and it is accessed
via an I2C interface.

1
drivers/power/pmic/Makefile
View File

@ -33,3 +33,4 @@ obj-$(CONFIG_POWER_TPS65218) += pmic_tps62362.o
obj-$(CONFIG_POWER_TPS65218) += pmic_tps65218.o
obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o
obj-$(CONFIG_POWER_HI6553) += pmic_hi6553.o
obj-$(CONFIG_POWER_MC34VR500) += pmic_mc34vr500.o

32
drivers/power/pmic/pmic_mc34vr500.c Normal file
View File

@ -0,0 +1,32 @@
/*
* Copyright 2016 Freescale Semiconductor, Inc.
* Hou Zhiqiang <Zhiqiang.Hou@freescale.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <errno.h>
#include <i2c.h>
#include <power/pmic.h>
#include <power/mc34vr500_pmic.h>
int power_mc34vr500_init(unsigned char bus)
{
static const char name[] = "MC34VR500";
struct pmic *p = pmic_alloc();
if (!p) {
printf("%s: POWER allocation error!\n", __func__);
return -ENOMEM;
}
p->name = name;
p->interface = PMIC_I2C;
p->number_of_regs = MC34VR500_NUM_OF_REGS;
p->hw.i2c.addr = MC34VR500_I2C_ADDR;
p->hw.i2c.tx_num = 1;
p->bus = bus;
return 0;
}

166
include/power/mc34vr500_pmic.h Normal file
View File

@ -0,0 +1,166 @@
/*
* Copyright 2016 Freescale Semiconductor, Inc.
* Hou Zhiqiang <Zhiqiang.Hou@freescale.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __MC34VR500_H_
#define __MC34VR500_H_
#include <power/pmic.h>
#define MC34VR500_I2C_ADDR 0x08
/* Drivers name */
#define MC34VR500_REGULATOR_DRIVER "mc34vr500_regulator"
/* Register map */
enum {
MC34VR500_DEVICEID = 0x00,
MC34VR500_SILICONREVID = 0x03,
MC34VR500_FABID,
MC34VR500_INTSTAT0,
MC34VR500_INTMASK0,
MC34VR500_INTSENSE0,
MC34VR500_INTSTAT1,
MC34VR500_INTMASK1,
MC34VR500_INTSENSE1,
MC34VR500_INTSTAT4 = 0x11,
MC34VR500_INTMASK4,
MC34VR500_INTSENSE4,
MC34VR500_PWRCTL = 0x1B,
MC34VR500_SW1VOLT = 0x2E,
MC34VR500_SW1STBY,
MC34VR500_SW1OFF,
MC34VR500_SW1MODE,
MC34VR500_SW1CONF,
MC34VR500_SW2VOLT,
MC34VR500_SW2STBY,
MC34VR500_SW2OFF,
MC34VR500_SW2MODE,
MC34VR500_SW2CONF,
MC34VR500_SW3VOLT = 0x3C,
MC34VR500_SW3STBY,
MC34VR500_SW3OFF,
MC34VR500_SW3MODE,
MC34VR500_SW3CONF,
MC34VR500_SW4VOLT = 0x4A,
MC34VR500_SW4STBY,
MC34VR500_SW4OFF,
MC34VR500_SW4MODE,
MC34VR500_SW4CONF,
MC34VR500_REFOUTCRTRL = 0x6A,
MC34VR500_LDO1CTL = 0x6D,
MC34VR500_LDO2CTL,
MC34VR500_LDO3CTL,
MC34VR500_LDO4CTL,
MC34VR500_LDO5CTL,
MC34VR500_PAGE_REGISTER = 0x7F,
/* Internal RAM */
MC34VR500_SW1_VOLT = 0xA8,
MC34VR500_SW1_SEQ,
MC34VR500_SW1_CONFIG,
MC34VR500_SW2_VOLT = 0xAC,
MC34VR500_SW2_SEQ,
MC34VR500_SW2_CONFIG,
MC34VR500_SW3_VOLT = 0xB0,
MC34VR500_SW3_SEQ,
MC34VR500_SW3_CONFIG,
MC34VR500_SW4_VOLT = 0xB8,
MC34VR500_SW4_SEQ,
MC34VR500_SW4_CONFIG,
MC34VR500_REFOUT_SEQ = 0xC4,
MC34VR500_LDO1_VOLT = 0xCC,
MC34VR500_LDO1_SEQ,
MC34VR500_LDO2_VOLT = 0xD0,
MC34VR500_LDO2_SEQ,
MC34VR500_LDO3_VOLT = 0xD4,
MC34VR500_LDO3_SEQ,
MC34VR500_LDO4_VOLT = 0xD8,
MC34VR500_LDO4_SEQ,
MC34VR500_LDO5_VOLT = 0xDC,
MC34VR500_LDO5_SEQ,
MC34VR500_PU_CONFIG1 = 0xE0,
MC34VR500_TBB_POR = 0xE4,
MC34VR500_PWRGD_EN = 0xE8,
MC34VR500_NUM_OF_REGS,
};
/* Registor offset based on SWxVOLT register */
#define MC34VR500_VOLT_OFFSET 0
#define MC34VR500_STBY_OFFSET 1
#define MC34VR500_OFF_OFFSET 2
#define MC34VR500_MODE_OFFSET 3
#define MC34VR500_CONF_OFFSET 4
#define SW_MODE_MASK 0xf
#define SW_MODE_SHIFT 0
#define LDO_VOL_MASK 0xf
#define LDO_EN (1 << 4)
#define LDO_MODE_SHIFT 4
#define LDO_MODE_MASK (1 << 4)
#define LDO_MODE_OFF 0
#define LDO_MODE_ON 1
#define REFOUTEN (1 << 4)
/*
* Regulator Mode Control
*
* OFF: The regulator is switched off and the output voltage is discharged.
* PFM: In this mode, the regulator is always in PFM mode, which is useful
* at light loads for optimized efficiency.
* PWM: In this mode, the regulator is always in PWM mode operation
* regardless of load conditions.
* APS: In this mode, the regulator moves automatically between pulse
* skipping mode and PWM mode depending on load conditions.
*
* SWxMODE[3:0]
* Normal Mode | Standby Mode | value
* OFF OFF 0x0
* PWM OFF 0x1
* PFM OFF 0x3
* APS OFF 0x4
* PWM PWM 0x5
* PWM APS 0x6
* APS APS 0x8
* APS PFM 0xc
* PWM PFM 0xd
*/
#define OFF_OFF 0x0
#define PWM_OFF 0x1
#define PFM_OFF 0x3
#define APS_OFF 0x4
#define PWM_PWM 0x5
#define PWM_APS 0x6
#define APS_APS 0x8
#define APS_PFM 0xc
#define PWM_PFM 0xd
int power_mc34vr500_init(unsigned char bus);
#endif /* __MC34VR500_PMIC_H_ */