regulator: tps6507x: add device tree support.
Add device tree based initialization support for TI's tps6507x regulators. Add device tree binding document for TI's tps6507x using datasheet: http://www.ti.com/lit/ds/symlink/tps65070.pdf Signed-off-by: Vishwanathrao Badarkhe, Manish <manishv.b@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Vishwanathrao Badarkhe, Manish
Mark Brown
parent
949db153b6
commit
6116ad94e1
91
Documentation/devicetree/bindings/mfd/tps6507x.txt
Executable file
91
Documentation/devicetree/bindings/mfd/tps6507x.txt
Executable file
@ -0,0 +1,91 @@
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TPS6507x Power Management Integrated Circuit
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Required properties:
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- compatible: "ti,tps6507x"
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- reg: I2C slave address
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- regulators: This is the list of child nodes that specify the regulator
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initialization data for defined regulators. Not all regulators for the
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given device need to be present. The definition for each of these nodes
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is defined using the standard binding for regulators found at
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Documentation/devicetree/bindings/regulator/regulator.txt.
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The regulator is matched with the regulator-compatible.
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The valid regulator-compatible values are:
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tps6507x: vdcdc1, vdcdc2, vdcdc3, vldo1, vldo2
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- xxx-supply: Input voltage supply regulator.
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These entries are required if regulators are enabled for a device.
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Missing of these properties can cause the regulator registration
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fails.
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If some of input supply is powered through battery or always-on
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supply then also it is require to have these parameters with proper
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node handle of always on power supply.
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tps6507x:
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vindcdc1_2-supply: VDCDC1 and VDCDC2 input.
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vindcdc3-supply : VDCDC3 input.
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vldo1_2-supply : VLDO1 and VLDO2 input.
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Regulator Optional properties:
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- defdcdc_default: It's property of DCDC2 and DCDC3 regulators.
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0: If defdcdc pin of DCDC2/DCDC3 is pulled to GND.
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1: If defdcdc pin of DCDC2/DCDC3 is driven HIGH.
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If this property is not defined, it defaults to 0 (not enabled).
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Example:
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pmu: tps6507x@48 {
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compatible = "ti,tps6507x";
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reg = <0x48>;
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vindcdc1_2-supply = <&vbat>;
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vindcdc3-supply = <...>;
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vinldo1_2-supply = <...>;
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regulators {
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#address-cells = <1>;
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#size-cells = <0>;
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vdcdc1_reg: regulator@0 {
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regulator-compatible = "VDCDC1";
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reg = <0>;
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regulator-min-microvolt = <3150000>;
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regulator-max-microvolt = <3450000>;
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regulator-always-on;
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regulator-boot-on;
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};
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vdcdc2_reg: regulator@1 {
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regulator-compatible = "VDCDC2";
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reg = <1>;
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regulator-min-microvolt = <1710000>;
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regulator-max-microvolt = <3450000>;
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regulator-always-on;
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regulator-boot-on;
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defdcdc_default = <1>;
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};
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vdcdc3_reg: regulator@2 {
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regulator-compatible = "VDCDC3";
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reg = <2>;
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regulator-min-microvolt = <950000>
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regulator-max-microvolt = <1350000>;
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regulator-always-on;
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regulator-boot-on;
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defdcdc_default = <1>;
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};
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ldo1_reg: regulator@3 {
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regulator-compatible = "LDO1";
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reg = <3>;
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regulator-min-microvolt = <1710000>;
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regulator-max-microvolt = <1890000>;
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regulator-always-on;
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regulator-boot-on;
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};
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ldo2_reg: regulator@4 {
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regulator-compatible = "LDO2";
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reg = <4>;
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regulator-min-microvolt = <1140000>;
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regulator-max-microvolt = <1320000>;
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regulator-always-on;
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regulator-boot-on;
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};
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};
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};
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@ -23,8 +23,10 @@
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/tps6507x.h>
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#include <linux/of.h>
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#include <linux/slab.h>
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#include <linux/mfd/tps6507x.h>
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#include <linux/regulator/of_regulator.h>
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/* DCDC's */
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#define TPS6507X_DCDC_1 0
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@ -356,6 +358,80 @@ static struct regulator_ops tps6507x_pmic_ops = {
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.list_voltage = regulator_list_voltage_table,
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};
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#ifdef CONFIG_OF
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static struct of_regulator_match tps6507x_matches[] = {
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{ .name = "VDCDC1"},
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{ .name = "VDCDC2"},
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{ .name = "VDCDC3"},
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{ .name = "LDO1"},
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{ .name = "LDO2"},
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};
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static struct tps6507x_board *tps6507x_parse_dt_reg_data(
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struct platform_device *pdev,
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struct of_regulator_match **tps6507x_reg_matches)
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{
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struct tps6507x_board *tps_board;
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struct device_node *np = pdev->dev.parent->of_node;
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struct device_node *regulators;
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struct of_regulator_match *matches;
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static struct regulator_init_data *reg_data;
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int idx = 0, count, ret;
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tps_board = devm_kzalloc(&pdev->dev, sizeof(*tps_board),
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GFP_KERNEL);
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if (!tps_board) {
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dev_err(&pdev->dev, "Failure to alloc pdata for regulators.\n");
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return NULL;
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}
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regulators = of_find_node_by_name(np, "regulators");
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if (!regulators) {
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dev_err(&pdev->dev, "regulator node not found\n");
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return NULL;
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}
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count = ARRAY_SIZE(tps6507x_matches);
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matches = tps6507x_matches;
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ret = of_regulator_match(pdev->dev.parent, regulators, matches, count);
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if (ret < 0) {
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dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
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ret);
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return NULL;
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}
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*tps6507x_reg_matches = matches;
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reg_data = devm_kzalloc(&pdev->dev, (sizeof(struct regulator_init_data)
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* TPS6507X_NUM_REGULATOR), GFP_KERNEL);
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if (!reg_data) {
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dev_err(&pdev->dev, "Failure to alloc init data for regulators.\n");
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return NULL;
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}
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tps_board->tps6507x_pmic_init_data = reg_data;
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for (idx = 0; idx < count; idx++) {
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if (!matches[idx].init_data || !matches[idx].of_node)
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continue;
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memcpy(®_data[idx], matches[idx].init_data,
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sizeof(struct regulator_init_data));
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}
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return tps_board;
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}
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#else
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static inline struct tps6507x_board *tps6507x_parse_dt_reg_data(
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struct platform_device *pdev,
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struct of_regulator_match **tps6507x_reg_matches)
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{
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*tps6507x_reg_matches = NULL;
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return NULL;
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}
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#endif
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static int tps6507x_pmic_probe(struct platform_device *pdev)
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{
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struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
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@ -365,8 +441,10 @@ static int tps6507x_pmic_probe(struct platform_device *pdev)
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struct regulator_dev *rdev;
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struct tps6507x_pmic *tps;
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struct tps6507x_board *tps_board;
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struct of_regulator_match *tps6507x_reg_matches = NULL;
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int i;
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int error;
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unsigned int prop;
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/**
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* tps_board points to pmic related constants
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@ -374,6 +452,9 @@ static int tps6507x_pmic_probe(struct platform_device *pdev)
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*/
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tps_board = dev_get_platdata(tps6507x_dev->dev);
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if (!tps_board && tps6507x_dev->dev->of_node)
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tps_board = tps6507x_parse_dt_reg_data(pdev,
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&tps6507x_reg_matches);
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if (!tps_board)
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return -EINVAL;
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@ -415,6 +496,17 @@ static int tps6507x_pmic_probe(struct platform_device *pdev)
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config.init_data = init_data;
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config.driver_data = tps;
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if (tps6507x_reg_matches) {
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error = of_property_read_u32(
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tps6507x_reg_matches[i].of_node,
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"ti,defdcdc_default", &prop);
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if (!error)
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tps->info[i]->defdcdc_default = prop;
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config.of_node = tps6507x_reg_matches[i].of_node;
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}
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rdev = regulator_register(&tps->desc[i], &config);
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if (IS_ERR(rdev)) {
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dev_err(tps6507x_dev->dev,
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