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51201e49b0
Add support to bind the regulators/child nodes with the pmic. Also adds the pmic i2c based read/write functions to access pmic registers. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
76 lines
1.9 KiB
Text
76 lines
1.9 KiB
Text
Texas Instruments, TPS80031/TPS80032 PMIC
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This device uses two drivers:
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- drivers/power/pmic/tps80031.c (for parent device)
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- drivers/power/regulator/tps80031_regulator.c (for child regulators)
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This chapter describes the binding info for the PMIC driver and regulators.
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Required properties for PMIC:
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- compatible: "ti,tps80031" or "ti,tps80032"
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- reg: 0x48
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With those two properties, the pmic device can be used for read/write only.
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To bind each regulator, the optional regulators subnode should exists.
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Optional subnode:
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- name: regulators (subnode list of each device's regulator)
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Regulators subnode contains set on supported regulators.
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Required properties:
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- regulator-name: used for regulator uclass platform data '.name',
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List of supported regulator nodes names for tps80031/tps80032:
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- smps1, smps2, smps3, smps4, smps5
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- ldo1, ldo2, ldo3, ldo4, ldo5, ldo6, ldo7, ldoln, ldousb
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SMPS5 in Linux 3.1.10 is referred as vio, but datasheet clearly names it SMPS5.
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Optional:
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- regulator-min-microvolt: minimum allowed Voltage to set
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- regulator-max-microvolt: minimum allowed Voltage to set
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- regulator-always-on: regulator should be never disabled
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- regulator-boot-on: regulator should be enabled by the bootloader
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Example:
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tps80032@48 {
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compatible = "ti,tps80032";
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reg = <0x48>;
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regulators {
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smps1 {
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regulator-name = "vdd_cpu";
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regulator-min-microvolt = <800000>;
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regulator-max-microvolt = <1250000>;
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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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smps5 {
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regulator-name = "vdd_1v8_gen";
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-always-on;
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regulator-boot-on;
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};
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ldo1 {
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regulator-name = "avdd_dsi_csi";
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regulator-min-microvolt = <1200000>;
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regulator-max-microvolt = <1200000>;
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regulator-boot-on;
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};
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...
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ldousb {
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regulator-name = "avdd_usb";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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};
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};
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};
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