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-rw-r--r--Documentation/devicetree/bindings/regulator/max77802.txt35
1 files changed, 35 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/regulator/max77802.txt b/Documentation/devicetree/bindings/regulator/max77802.txt
index 5aeaffc0f1f0..79e5476444f7 100644
--- a/Documentation/devicetree/bindings/regulator/max77802.txt
+++ b/Documentation/devicetree/bindings/regulator/max77802.txt
@@ -25,6 +25,29 @@ with their hardware counterparts as follow. The valid names are:
25 example: LDO1, LDO2, LDO35. 25 example: LDO1, LDO2, LDO35.
26 -BUCKn : for BUCKs, where n can lie in range 1 to 10. 26 -BUCKn : for BUCKs, where n can lie in range 1 to 10.
27 example: BUCK1, BUCK5, BUCK10. 27 example: BUCK1, BUCK5, BUCK10.
28
29The max77802 regulator supports two different operating modes: Normal and Low
30Power Mode. Some regulators support the modes to be changed at startup or by
31the consumers during normal operation while others only support to change the
32mode during system suspend. The standard regulator suspend states binding can
33be used to configure the regulator operating mode.
34
35The regulators that support the standard "regulator-initial-mode" property,
36changing their mode during normal operation are: LDOs 1, 3, 20 and 21.
37
38The possible values for "regulator-initial-mode" and "regulator-mode" are:
39 1: Normal regulator voltage output mode.
40 3: Low Power which reduces the quiescent current down to only 1uA
41
42The list of valid modes are defined in the dt-bindings/clock/maxim,max77802.h
43header and can be included by device tree source files.
44
45The standard "regulator-mode" property can only be used for regulators that
46support changing their mode to Low Power Mode during suspend. These regulators
47are: BUCKs 2-4 and LDOs 1-35. Also, it only takes effect if the regulator has
48been enabled for the given suspend state using "regulator-on-in-suspend" and
49has not been disabled for that state using "regulator-off-in-suspend".
50
28Example: 51Example:
29 52
30 max77802@09 { 53 max77802@09 {
@@ -36,11 +59,23 @@ Example:
36 #size-cells = <0>; 59 #size-cells = <0>;
37 60
38 regulators { 61 regulators {
62 ldo1_reg: LDO1 {
63 regulator-name = "vdd_1v0";
64 regulator-min-microvolt = <1000000>;
65 regulator-max-microvolt = <1000000>;
66 regulator-always-on;
67 regulator-initial-mode = <MAX77802_OPMODE_LP>;
68 };
69
39 ldo11_reg: LDO11 { 70 ldo11_reg: LDO11 {
40 regulator-name = "vdd_ldo11"; 71 regulator-name = "vdd_ldo11";
41 regulator-min-microvolt = <1900000>; 72 regulator-min-microvolt = <1900000>;
42 regulator-max-microvolt = <1900000>; 73 regulator-max-microvolt = <1900000>;
43 regulator-always-on; 74 regulator-always-on;
75 regulator-state-mem {
76 regulator-on-in-suspend;
77 regulator-mode = <MAX77802_OPMODE_LP>;
78 };
44 }; 79 };
45 80
46 buck1_reg: BUCK1 { 81 buck1_reg: BUCK1 {