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Commit 40719314 authored by Laxman Dewangan's avatar Laxman Dewangan Committed by Samuel Ortiz
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mfd: tps65090: add DT support for tps65090 



Add device tree support for the TI PMIC TPS65090.
The device can be registered through platform or DT.

Add device tree binding document for this device.

Signed-off-by: default avatarLaxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 5f384c1f

Documentation/devicetree/bindings/regulator/tps65090.txt

0 → 100644
+122 −0
Original line number Diff line number Diff line 
TPS65090 regulators



Required properties:

- compatible: "ti,tps65090"

- reg: I2C slave address

- interrupts: the interrupt outputs of the controller

- regulators: A node that houses a sub-node for each regulator within the

  device. Each sub-node is identified using the node's name, with valid

  values listed below. The content of each sub-node is defined by the

  standard binding for regulators; see regulator.txt.

  dcdc[1-3], fet[1-7] and ldo[1-2] respectively.

- vsys[1-3]-supply: The input supply for DCDC[1-3] respectively.

- infet[1-7]-supply: The input supply for FET[1-7] respectively.

- vsys-l[1-2]-supply: The input supply for LDO[1-2] respectively.



Optional properties:

- ti,enable-ext-control: This is applicable for DCDC1, DCDC2 and DCDC3.

  If DCDCs are externally controlled then this property should be there.

- "dcdc-ext-control-gpios: This is applicable for DCDC1, DCDC2 and DCDC3.

  If DCDCs are externally controlled and if it is from GPIO then GPIO

  number should be provided. If it is externally controlled and no GPIO

  entry then driver will just configure this rails as external control

  and will not provide any enable/disable APIs.



Each regulator is defined using the standard binding for regulators.



Example:



	tps65090@48 {

		compatible = "ti,tps65090";

		reg = <0x48>;

		interrupts = <0 88 0x4>;



		vsys1-supply = <&some_reg>;

		vsys2-supply = <&some_reg>;

		vsys3-supply = <&some_reg>;

		infet1-supply = <&some_reg>;

		infet2-supply = <&some_reg>;

		infet3-supply = <&some_reg>;

		infet4-supply = <&some_reg>;

		infet5-supply = <&some_reg>;

		infet6-supply = <&some_reg>;

		infet7-supply = <&some_reg>;

		vsys_l1-supply = <&some_reg>;

		vsys_l2-supply = <&some_reg>;



		regulators {

			dcdc1 {

				regulator-name = "dcdc1";

				regulator-boot-on;

				regulator-always-on;

				ti,enable-ext-control;

				dcdc-ext-control-gpios = <&gpio 10 0>;

			};



			dcdc2 {

				regulator-name = "dcdc2";

				regulator-boot-on;

				regulator-always-on;

			};



			dcdc3 {

				regulator-name = "dcdc3";

				regulator-boot-on;

				regulator-always-on;

			};



			fet1 {

				regulator-name = "fet1";

				regulator-boot-on;

				regulator-always-on;

			};



			fet2 {

				regulator-name = "fet2";

				regulator-boot-on;

				regulator-always-on;

			};



			fet3 {

				regulator-name = "fet3";

				regulator-boot-on;

				regulator-always-on;

			};



			fet4 {

				regulator-name = "fet4";

				regulator-boot-on;

				regulator-always-on;

			};



			fet5 {

				regulator-name = "fet5";

				regulator-boot-on;

				regulator-always-on;

			};



			fet6 {

				regulator-name = "fet6";

				regulator-boot-on;

				regulator-always-on;

			};



			fet7 {

				regulator-name = "fet7";

				regulator-boot-on;

				regulator-always-on;

			};



			ldo1 {

				regulator-name = "ldo1";

				regulator-boot-on;

				regulator-always-on;

			};



			ldo2 {

				regulator-name = "ldo2";

				regulator-boot-on;

				regulator-always-on;

			};

		};

	};

drivers/mfd/tps65090.c

+19 −3
Original line number Diff line number Diff line
@@ -25,6 +25,8 @@ 
#include <linux/i2c.h>

#include <linux/mfd/core.h>

#include <linux/mfd/tps65090.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/err.h>



#define NUM_INT_REG 2
@@ -148,18 +150,31 @@ static const struct regmap_config tps65090_regmap_config = { 
	.volatile_reg = is_volatile_reg,

};



#ifdef CONFIG_OF

static const struct of_device_id tps65090_of_match[] = {

	{ .compatible = "ti,tps65090",},

	{},

};

MODULE_DEVICE_TABLE(of, tps65090_of_match);

#endif



static int tps65090_i2c_probe(struct i2c_client *client,

					const struct i2c_device_id *id)

{

	struct tps65090_platform_data *pdata = client->dev.platform_data;

	int irq_base = 0;

	struct tps65090 *tps65090;

	int ret;



	if (!pdata) {

		dev_err(&client->dev, "tps65090 requires platform data\n");

	if (!pdata && !client->dev.of_node) {

		dev_err(&client->dev,

			"tps65090 requires platform data or of_node\n");

		return -EINVAL;

	}



	if (pdata)

		irq_base = pdata->irq_base;



	tps65090 = devm_kzalloc(&client->dev, sizeof(*tps65090), GFP_KERNEL);

	if (!tps65090) {

		dev_err(&client->dev, "mem alloc for tps65090 failed\n");
@@ -178,7 +193,7 @@ static int tps65090_i2c_probe(struct i2c_client *client, 


	if (client->irq) {

		ret = regmap_add_irq_chip(tps65090->rmap, client->irq,

			IRQF_ONESHOT | IRQF_TRIGGER_LOW, pdata->irq_base,

			IRQF_ONESHOT | IRQF_TRIGGER_LOW, irq_base,

			&tps65090_irq_chip, &tps65090->irq_data);

			if (ret) {

				dev_err(&client->dev,
@@ -247,6 +262,7 @@ static struct i2c_driver tps65090_driver = { 
	.driver	= {

		.name	= "tps65090",

		.owner	= THIS_MODULE,

		.of_match_table = of_match_ptr(tps65090_of_match),

		.pm	= &tps65090_pm_ops,

	},

	.probe		= tps65090_i2c_probe,