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dt-bindings: mfd: Document STPMIC1

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STPMIC1 is a PMIC from STMicroelectronics. The STPMIC1 integrates 10
regulators, 3 power switches, a watchdog and an input for a power on key.

Signed-off-by: Pascal Paillet <p.paillet@st.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Pascal PAILLET-LME 2019-01-14 10:05:15 +00:00 committed by Lee Jones
parent bfeffd1552
commit 3eafbd3a77
2 changed files with 111 additions and 0 deletions
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Documentation/devicetree/bindings/mfd/st,stpmic1.txt Normal file
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* STMicroelectronics STPMIC1 Power Management IC
Required properties:
- compatible: : "st,stpmic1"
- reg: : The I2C slave address for the STPMIC1 chip.
- interrupts: : The interrupt line the device is connected to.
- #interrupt-cells: : Should be 1.
- interrupt-controller: : Marks the device node as an interrupt controller.
Interrupt numbers are defined at
dt-bindings/mfd/st,stpmic1.h.
STPMIC1 consists in a varied group of sub-devices.
Each sub-device binding is be described in own documentation file.
Device Description
------ ------------
st,stpmic1-onkey : Power on key, see ../input/st,stpmic1-onkey.txt
st,stpmic1-regulators : Regulators, see ../regulator/st,stpmic1-regulator.txt
st,stpmic1-wdt : Watchdog, see ../watchdog/st,stpmic1-wdt.txt
Example:
#include <dt-bindings/mfd/st,stpmic1.h>
pmic: pmic@33 {
compatible = "st,stpmic1";
reg = <0x33>;
interrupt-parent = <&gpioa>;
interrupts = <0 2>;
interrupt-controller;
#interrupt-cells = <2>;
onkey {
compatible = "st,stpmic1-onkey";
interrupts = <IT_PONKEY_F 0>,<IT_PONKEY_R 1>;
interrupt-names = "onkey-falling", "onkey-rising";
power-off-time-sec = <10>;
};
watchdog {
compatible = "st,stpmic1-wdt";
};
regulators {
compatible = "st,stpmic1-regulators";
vdd_core: buck1 {
regulator-name = "vdd_core";
regulator-boot-on;
regulator-min-microvolt = <700000>;
regulator-max-microvolt = <1200000>;
};
vdd: buck3 {
regulator-name = "vdd";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
regulator-pull-down;
};
};

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include/dt-bindings/mfd/st,stpmic1.h Normal file
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) STMicroelectronics 2018 - All Rights Reserved
* Author: Philippe Peurichard <philippe.peurichard@st.com>,
* Pascal Paillet <p.paillet@st.com> for STMicroelectronics.
*/
#ifndef __DT_BINDINGS_STPMIC1_H__
#define __DT_BINDINGS_STPMIC1_H__
/* IRQ definitions */
#define IT_PONKEY_F 0
#define IT_PONKEY_R 1
#define IT_WAKEUP_F 2
#define IT_WAKEUP_R 3
#define IT_VBUS_OTG_F 4
#define IT_VBUS_OTG_R 5
#define IT_SWOUT_F 6
#define IT_SWOUT_R 7
#define IT_CURLIM_BUCK1 8
#define IT_CURLIM_BUCK2 9
#define IT_CURLIM_BUCK3 10
#define IT_CURLIM_BUCK4 11
#define IT_OCP_OTG 12
#define IT_OCP_SWOUT 13
#define IT_OCP_BOOST 14
#define IT_OVP_BOOST 15
#define IT_CURLIM_LDO1 16
#define IT_CURLIM_LDO2 17
#define IT_CURLIM_LDO3 18
#define IT_CURLIM_LDO4 19
#define IT_CURLIM_LDO5 20
#define IT_CURLIM_LDO6 21
#define IT_SHORT_SWOTG 22
#define IT_SHORT_SWOUT 23
#define IT_TWARN_F 24
#define IT_TWARN_R 25
#define IT_VINLOW_F 26
#define IT_VINLOW_R 27
#define IT_SWIN_F 30
#define IT_SWIN_R 31
/* BUCK MODES definitions */
#define STPMIC1_BUCK_MODE_NORMAL 0
#define STPMIC1_BUCK_MODE_LP 2
#endif /* __DT_BINDINGS_STPMIC1_H__ */