tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1STMicroelectronics STPMIC1 Voltage regulators
2
3Regulator Nodes are optional depending on needs.
4
5Available Regulators in STPMIC1 device are:
6 - buck1 for Buck BUCK1
7 - buck2 for Buck BUCK2
8 - buck3 for Buck BUCK3
9 - buck4 for Buck BUCK4
10 - ldo1 for LDO LDO1
11 - ldo2 for LDO LDO2
12 - ldo3 for LDO LDO3
13 - ldo4 for LDO LDO4
14 - ldo5 for LDO LDO5
15 - ldo6 for LDO LDO6
16 - vref_ddr for LDO Vref DDR
17 - boost for Buck BOOST
18 - pwr_sw1 for VBUS_OTG switch
19 - pwr_sw2 for SW_OUT switch
20
21Switches are fixed voltage regulators with only enable/disable capability.
22
23Optional properties:
24- st,mask-reset: mask reset for this regulator: the regulator configuration
25 is maintained during pmic reset.
26- regulator-pull-down: enable high pull down
27 if not specified light pull down is used
28- regulator-over-current-protection:
29 if set, all regulators are switched off in case of over-current detection
30 on this regulator,
31 if not set, the driver only sends an over-current event.
32- interrupt-parent: phandle to the parent interrupt controller
33- interrupts: index of current limit detection interrupt
34- <regulator>-supply: phandle to the parent supply/regulator node
35 each regulator supply can be described except vref_ddr.
36
37Example:
38regulators {
39 compatible = "st,stpmic1-regulators";
40
41 ldo6-supply = <&v3v3>;
42
43 vdd_core: buck1 {
44 regulator-name = "vdd_core";
45 interrupts = <IT_CURLIM_BUCK1 0>;
46 interrupt-parent = <&pmic>;
47 st,mask-reset;
48 regulator-pull-down;
49 regulator-min-microvolt = <700000>;
50 regulator-max-microvolt = <1200000>;
51 };
52
53 v3v3: buck4 {
54 regulator-name = "v3v3";
55 interrupts = <IT_CURLIM_BUCK4 0>;
56 interrupt-parent = <&mypmic>;
57
58 regulator-min-microvolt = <3300000>;
59 regulator-max-microvolt = <3300000>;
60 };
61
62 v1v8: ldo6 {
63 regulator-name = "v1v8";
64 regulator-min-microvolt = <1800000>;
65 regulator-max-microvolt = <1800000>;
66 regulator-over-current-protection;
67 };
68};