[U-Boot] [PATCH 1/5] pmic: pmic_mc34vr500: Add a driver for the mc34vr500 pmic
york sun
york.sun at nxp.com
Wed Jan 4 21:33:31 CET 2017
+Jaehoon to comment on the driver
On 12/09/2016 12:22 AM, Zhiqiang Hou wrote:
> From: Hou Zhiqiang <Zhiqiang.Hou at nxp.com>
>
> 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 at nxp.com>
> ---
> drivers/power/pmic/Kconfig | 7 ++
> drivers/power/pmic/Makefile | 1 +
> drivers/power/pmic/pmic_mc34vr500.c | 32 +++++++
> include/power/mc34vr500_pmic.h | 166 ++++++++++++++++++++++++++++++++++++
> 4 files changed, 206 insertions(+)
> create mode 100644 drivers/power/pmic/pmic_mc34vr500.c
> create mode 100644 include/power/mc34vr500_pmic.h
>
> diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
> index ce204b3..73e1d53 100644
> --- a/drivers/power/pmic/Kconfig
> +++ b/drivers/power/pmic/Kconfig
> @@ -157,3 +157,10 @@ 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.
> diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
> index cd1c694..58d0241 100644
> --- a/drivers/power/pmic/Makefile
> +++ b/drivers/power/pmic/Makefile
> @@ -32,3 +32,4 @@ 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
> diff --git a/drivers/power/pmic/pmic_mc34vr500.c b/drivers/power/pmic/pmic_mc34vr500.c
> new file mode 100644
> index 0000000..db9e210
> --- /dev/null
> +++ b/drivers/power/pmic/pmic_mc34vr500.c
> @@ -0,0 +1,32 @@
> +/*
> + * Copyright 2016 Freescale Semiconductor, Inc.
> + * Hou Zhiqiang <Zhiqiang.Hou at 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;
> +}
> diff --git a/include/power/mc34vr500_pmic.h b/include/power/mc34vr500_pmic.h
> new file mode 100644
> index 0000000..df4985a
> --- /dev/null
> +++ b/include/power/mc34vr500_pmic.h
> @@ -0,0 +1,166 @@
> +/*
> + * Copyright 2016 Freescale Semiconductor, Inc.
> + * Hou Zhiqiang <Zhiqiang.Hou at 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_ */
>
Zhiqiang,
I'd like to hear from Jaehoon before taking an action.
York
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