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f2ed584994
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> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
84 lines
2 KiB
Text
84 lines
2 KiB
Text
MAXIM, MAX77663 PMIC
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This device uses two drivers:
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- drivers/power/pmic/max77663.c (for parent device)
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- drivers/power/regulator/max77663_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: "maxim,max77663"
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- reg: usually 0x1c or 0x3c
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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 max77663:
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- sd0, sd1, sd2, sd3, ldo0, ldo1, ldo2, ldo3, ldo4, ldo5, ldo6, ldo7, ldo8
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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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Linux driver binding for this driver is compatible.
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Example:
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max77663@1c {
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compatible = "maxim,max77663";
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reg = <0x1c>;
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regulators {
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sd0 {
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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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ldo0 {
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regulator-name = "avdd_pll";
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regulator-min-microvolt = <1200000>;
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regulator-max-microvolt = <1200000>;
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};
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...
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ldo2 {
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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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regulator-always-on;
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regulator-boot-on;
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};
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ldo3 {
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regulator-name = "vdd_sdmmc3";
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regulator-min-microvolt = <3000000>;
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regulator-max-microvolt = <3000000>;
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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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ldo8 {
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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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};
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};
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};
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