[U-Boot] [PATCH v2 07/10] power: pmic: add Ricoh RN5T567 PMIC support
Simon Glass
sjg at chromium.org
Thu Aug 4 03:16:37 CEST 2016
+Stephen as an example of a simple PMIC driver.
- Simon
On 1 August 2016 at 23:50, Stefan Agner <stefan at agner.ch> wrote:
> From: Stefan Agner <stefan.agner at toradex.com>
>
> Add device model enabled PMIC driver for Ricoh RN5T567 PMIC used
> on Colibri iMX7.
>
> Signed-off-by: Stefan Agner <stefan.agner at toradex.com>
> Reviewed-by: Simon Glass <sjg at chromium.org>
> ---
>
> doc/device-tree-bindings/pmic/rn5t567.txt | 17 +++++
> drivers/power/pmic/Kconfig | 8 +++
> drivers/power/pmic/Makefile | 1 +
> drivers/power/pmic/rn5t567.c | 64 +++++++++++++++++
> include/power/rn5t567_pmic.h | 113 ++++++++++++++++++++++++++++++
> 5 files changed, 203 insertions(+)
> create mode 100644 doc/device-tree-bindings/pmic/rn5t567.txt
> create mode 100644 drivers/power/pmic/rn5t567.c
> create mode 100644 include/power/rn5t567_pmic.h
>
> diff --git a/doc/device-tree-bindings/pmic/rn5t567.txt b/doc/device-tree-bindings/pmic/rn5t567.txt
> new file mode 100644
> index 0000000..e9e6885
> --- /dev/null
> +++ b/doc/device-tree-bindings/pmic/rn5t567.txt
> @@ -0,0 +1,17 @@
> +Ricoh RN5T567 PMIC
> +
> +This file describes the binding info for the PMIC driver.
> +
> +Required properties:
> +- compatible: "ricoh,rn5t567"
> +- reg: depending on strapping, e.g. 0x33
> +
> +With those two properties, the PMIC device can be used to read/write
> +registers.
> +
> +Example:
> +
> +rn5t567 at 33 {
> + compatible = "ricoh,rn5t567";
> + reg = <0x33>;
> +};
> diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
> index 69f8d51..13d293a 100644
> --- a/drivers/power/pmic/Kconfig
> +++ b/drivers/power/pmic/Kconfig
> @@ -127,6 +127,14 @@ config PMIC_S5M8767
> driver provides basic register access and sets up the attached
> regulators if regulator support is enabled.
>
> +config PMIC_RN5T567
> + bool "Enable driver for Ricoh RN5T567 PMIC"
> + depends on DM_PMIC
> + ---help---
> + The RN5T567 is a PMIC with 4 step-down DC/DC converters, 5 LDO
> + regulators Real-Time Clock and 4 GPIOs. This driver provides
> + register access only.
> +
> config PMIC_TPS65090
> bool "Enable driver for Texas Instruments TPS65090 PMIC"
> depends on DM_PMIC
> diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
> index 52b4f71..37d9eb5 100644
> --- a/drivers/power/pmic/Makefile
> +++ b/drivers/power/pmic/Makefile
> @@ -13,6 +13,7 @@ obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
> obj-$(CONFIG_PMIC_ACT8846) += act8846.o
> obj-$(CONFIG_PMIC_PM8916) += pm8916.o
> obj-$(CONFIG_PMIC_RK808) += rk808.o
> +obj-$(CONFIG_PMIC_RN5T567) += rn5t567.o
> obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
> obj-$(CONFIG_PMIC_S5M8767) += s5m8767.o
>
> diff --git a/drivers/power/pmic/rn5t567.c b/drivers/power/pmic/rn5t567.c
> new file mode 100644
> index 0000000..001e695
> --- /dev/null
> +++ b/drivers/power/pmic/rn5t567.c
> @@ -0,0 +1,64 @@
> +/*
> + * Copyright (C) 2016 Toradex AG
> + * Stefan Agner <stefan.agner at toradex.com>
> + *
> + * SPDX-License-Identifier: GPL-2.0+
> + */
> +
> +#include <common.h>
> +#include <dm.h>
> +#include <errno.h>
> +#include <fdtdec.h>
> +#include <libfdt.h>
> +#include <power/rn5t567_pmic.h>
> +#include <power/pmic.h>
> +
> +static int rn5t567_reg_count(struct udevice *dev)
> +{
> + return RN5T567_NUM_OF_REGS;
> +}
> +
> +static int rn5t567_write(struct udevice *dev, uint reg, const uint8_t *buff,
> + int len)
> +{
> + int ret;
> +
> + ret = dm_i2c_write(dev, reg, buff, len);
> + if (ret) {
> + debug("write error to device: %p register: %#x!", dev, reg);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int rn5t567_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
> +{
> + int ret;
> +
> + ret = dm_i2c_read(dev, reg, buff, len);
> + if (ret) {
> + debug("read error from device: %p register: %#x!", dev, reg);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static struct dm_pmic_ops rn5t567_ops = {
> + .reg_count = rn5t567_reg_count,
> + .read = rn5t567_read,
> + .write = rn5t567_write,
> +};
> +
> +static const struct udevice_id rn5t567_ids[] = {
> + { .compatible = "ricoh,rn5t567" },
> + { }
> +};
> +
> +U_BOOT_DRIVER(pmic_rn5t567) = {
> + .name = "rn5t567 pmic",
> + .id = UCLASS_PMIC,
> + .of_match = rn5t567_ids,
> + .ops = &rn5t567_ops,
> +};
> diff --git a/include/power/rn5t567_pmic.h b/include/power/rn5t567_pmic.h
> new file mode 100644
> index 0000000..9ce601f
> --- /dev/null
> +++ b/include/power/rn5t567_pmic.h
> @@ -0,0 +1,113 @@
> +/*
> + * Copyright (C) 2016 Toradex AG
> + * Stefan Agner <stefan.agner at toradex.com>
> + *
> + * SPDX-License-Identifier: GPL-2.0+
> + */
> +#ifndef __RN5T567_PMIC_H_
> +#define __RN5T567_PMIC_H_
> +
> +/* RN5T567 registers */
> +enum {
> + RN5T567_LSIVER = 0x00,
> + RN5T567_OTPVER = 0x01,
> + RN5T567_IODAC = 0x02,
> + RN5T567_VINDAC = 0x03,
> + RN5T567_OUT32KEN = 0x05,
> +
> + RN5T567_CPUCNT = 0x06,
> +
> + RN5T567_PSWR = 0x07,
> + RN5T567_PONHIS = 0x09,
> + RN5T567_POFFHIS = 0x0A,
> + RN5T567_WATCHDOG = 0x0B,
> + RN5T567_WATCHDOGCNT = 0x0C,
> + RN5T567_PWRFUNC = 0x0D,
> + RN5T567_SLPCNT = 0x0E,
> + RN5T567_REPCNT = 0x0F,
> + RN5T567_PWRONTIMSET = 0x10,
> + RN5T567_NOETIMSETCNT = 0x11,
> + RN5T567_PWRIREN = 0x12,
> + RN5T567_PWRIRQ = 0x13,
> + RN5T567_PWRMON = 0x14,
> + RN5T567_PWRIRSEL = 0x15,
> +
> + RN5T567_DC1_SLOT = 0x16,
> + RN5T567_DC2_SLOT = 0x17,
> + RN5T567_DC3_SLOT = 0x18,
> + RN5T567_DC4_SLOT = 0x19,
> +
> + RN5T567_LDO1_SLOT = 0x1B,
> + RN5T567_LDO2_SLOT = 0x1C,
> + RN5T567_LDO3_SLOT = 0x1D,
> + RN5T567_LDO4_SLOT = 0x1E,
> + RN5T567_LDO5_SLOT = 0x1F,
> +
> + RN5T567_PSO0_SLOT = 0x25,
> + RN5T567_PSO1_SLOT = 0x26,
> + RN5T567_PSO2_SLOT = 0x27,
> + RN5T567_PSO3_SLOT = 0x28,
> +
> + RN5T567_LDORTC1_SLOT = 0x2A,
> +
> + RN5T567_DC1CTL = 0x2C,
> + RN5T567_DC1CTL2 = 0x2D,
> + RN5T567_DC2CTL = 0x2E,
> + RN5T567_DC2CTL2 = 0x2F,
> + RN5T567_DC3CTL = 0x30,
> + RN5T567_DC3CTL2 = 0x31,
> + RN5T567_DC4CTL = 0x32,
> + RN5T567_DC4CTL2 = 0x33,
> +
> + RN5T567_DC1DAC = 0x36,
> + RN5T567_DC2DAC = 0x37,
> + RN5T567_DC3DAC = 0x38,
> + RN5T567_DC4DAC = 0x39,
> +
> + RN5T567_DC1DAC_SLP = 0x3B,
> + RN5T567_DC2DAC_SLP = 0x3C,
> + RN5T567_DC3DAC_SLP = 0x3D,
> + RN5T567_DC4DAC_SLP = 0x3E,
> +
> + RN5T567_DCIREN = 0x40,
> + RN5T567_DCIRQ = 0x41,
> + RN5T567_DCIRMON = 0x42,
> +
> + RN5T567_LDOEN1 = 0x44,
> + RN5T567_LDOEN2 = 0x45,
> + RN5T567_LDODIS1 = 0x46,
> +
> + RN5T567_LDO1DAC = 0x4C,
> + RN5T567_LDO2DAC = 0x4D,
> + RN5T567_LDO3DAC = 0x4E,
> + RN5T567_LDO4DAC = 0x4F,
> + RN5T567_LDO5DAC = 0x50,
> +
> + RN5T567_LDORTC1DAC = 0x56,
> + RN5T567_LDORTC2DAC = 0x57,
> +
> + RN5T567_LDO1DAC_SLP = 0x58,
> + RN5T567_LDO2DAC_SLP = 0x59,
> + RN5T567_LDO3DAC_SLP = 0x5A,
> + RN5T567_LDO4DAC_SLP = 0x5B,
> + RN5T567_LDO5DAC_SLP = 0x5C,
> +
> + RN5T567_IOSEL = 0x90,
> + RN5T567_IOOUT = 0x91,
> + RN5T567_GPEDGE1 = 0x92,
> + RN5T567_EN_GPIR = 0x94,
> + RN5T567_IR_GPR = 0x95,
> + RN5T567_IR_GPF = 0x96,
> + RN5T567_MON_IOIN = 0x97,
> + RN5T567_GPLED_FUNC = 0x98,
> + RN5T567_INTPOL = 0x9C,
> + RN5T567_INTEN = 0x9D,
> + RN5T567_INTMON = 0x9E,
> +
> + RN5T567_PREVINDAC = 0xB0,
> + RN5T567_OVTEMP = 0xBC,
> +
> + RN5T567_NUM_OF_REGS = 0xBF,
> +};
> +
> +#endif
> --
> 2.9.0
>
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