diff options
author | 2016-04-11 10:41:07 +0300 | |
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committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/Documentation/devicetree/bindings/regulator/max77686.txt | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/Documentation/devicetree/bindings/regulator/max77686.txt')
-rw-r--r-- | kernel/Documentation/devicetree/bindings/regulator/max77686.txt | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/kernel/Documentation/devicetree/bindings/regulator/max77686.txt b/kernel/Documentation/devicetree/bindings/regulator/max77686.txt new file mode 100644 index 000000000..0dded64d8 --- /dev/null +++ b/kernel/Documentation/devicetree/bindings/regulator/max77686.txt @@ -0,0 +1,71 @@ +Binding for Maxim MAX77686 regulators + +This is a part of the device tree bindings of MAX77686 multi-function device. +More information can be found in ../mfd/max77686.txt file. + +The MAX77686 PMIC has 9 high-efficiency Buck and 26 Low-DropOut (LDO) +regulators that can be controlled over I2C. + +Following properties should be present in main device node of the MFD chip. + +Optional node: +- voltage-regulators : The regulators of max77686 have to be instantiated + under subnode named "voltage-regulators" using the following format. + + regulator_name { + regulator-compatible = LDOn/BUCKn + standard regulator constraints.... + }; + refer Documentation/devicetree/bindings/regulator/regulator.txt + + The regulator node's name should be initialized with a string +to get matched with their hardware counterparts as follow: + + -LDOn : for LDOs, where n can lie in range 1 to 26. + example: LDO1, LDO2, LDO26. + -BUCKn : for BUCKs, where n can lie in range 1 to 9. + example: BUCK1, BUCK5, BUCK9. + + Regulators which can be turned off during system suspend: + -LDOn : 2, 6-8, 10-12, 14-16, + -BUCKn : 1-4. + Use standard regulator bindings for it ('regulator-off-in-suspend'). + + LDO20, LDO21, LDO22, BUCK8 and BUCK9 can be configured to GPIO enable + control. To turn this feature on this property must be added to the regulator + sub-node: + - maxim,ena-gpios : one GPIO specifier enable control (the gpio + flags are actually ignored and always + ACTIVE_HIGH is used) + +Example: + + max77686: pmic@09 { + compatible = "maxim,max77686"; + interrupt-parent = <&wakeup_eint>; + interrupts = <26 IRQ_TYPE_NONE>; + reg = <0x09>; + + voltage-regulators { + ldo11_reg: LDO11 { + regulator-name = "vdd_ldo11"; + regulator-min-microvolt = <1900000>; + regulator-max-microvolt = <1900000>; + regulator-always-on; + }; + + buck1_reg: BUCK1 { + regulator-name = "vdd_mif"; + regulator-min-microvolt = <950000>; + regulator-max-microvolt = <1300000>; + regulator-always-on; + regulator-boot-on; + }; + + buck9_reg: BUCK9 { + regulator-name = "CAM_ISP_CORE_1.2V"; + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <1200000>; + maxim,ena-gpios = <&gpm0 3 GPIO_ACTIVE_HIGH>; + }; + }; |