diff options
Diffstat (limited to 'Documentation/devicetree/bindings/regulator/max77802.txt')
-rw-r--r-- | Documentation/devicetree/bindings/regulator/max77802.txt | 35 |
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 | |||
29 | The max77802 regulator supports two different operating modes: Normal and Low | ||
30 | Power Mode. Some regulators support the modes to be changed at startup or by | ||
31 | the consumers during normal operation while others only support to change the | ||
32 | mode during system suspend. The standard regulator suspend states binding can | ||
33 | be used to configure the regulator operating mode. | ||
34 | |||
35 | The regulators that support the standard "regulator-initial-mode" property, | ||
36 | changing their mode during normal operation are: LDOs 1, 3, 20 and 21. | ||
37 | |||
38 | The 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 | |||
42 | The list of valid modes are defined in the dt-bindings/clock/maxim,max77802.h | ||
43 | header and can be included by device tree source files. | ||
44 | |||
45 | The standard "regulator-mode" property can only be used for regulators that | ||
46 | support changing their mode to Low Power Mode during suspend. These regulators | ||
47 | are: BUCKs 2-4 and LDOs 1-35. Also, it only takes effect if the regulator has | ||
48 | been enabled for the given suspend state using "regulator-on-in-suspend" and | ||
49 | has not been disabled for that state using "regulator-off-in-suspend". | ||
50 | |||
28 | Example: | 51 | Example: |
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 { |