diff options
author | Josh Cartwright <joshc@codeaurora.org> | 2014-03-22 12:49:51 +1100 |
---|---|---|
committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2014-03-26 16:43:11 +1100 |
commit | 3e004f89f934a27a44b686016ad44141328c29aa (patch) | |
tree | c66a9dc1c28894c74ee013797445de19957ccfc7 | |
parent | f139db398a59daa50e3ea798d70a50867479f96a (diff) |
mfd: devicetree: bindings: add pm8xxx RTC description
The PM8xxx family of PMICs contain an RTC. This RTC is described as a
subnode of the PM8xxx. Document these bindings, and replace the pwrkey
node in the example with the RTC, which is now described in this document.
While we're here, add a short description to the device tree bindings
describing what the the PM8xxx devices are and how they are expected to be
used.
Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Rob Herring <robherring2@gmail.com>
Cc: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
-rw-r--r-- | Documentation/devicetree/bindings/mfd/qcom,pm8xxx.txt | 45 |
1 files changed, 39 insertions, 6 deletions
diff --git a/Documentation/devicetree/bindings/mfd/qcom,pm8xxx.txt b/Documentation/devicetree/bindings/mfd/qcom,pm8xxx.txt index e3fe625ffd58..03518dc8b6bd 100644 --- a/Documentation/devicetree/bindings/mfd/qcom,pm8xxx.txt +++ b/Documentation/devicetree/bindings/mfd/qcom,pm8xxx.txt @@ -1,6 +1,9 @@ Qualcomm PM8xxx PMIC multi-function devices -PROPERTIES +The PM8xxx family of Power Management ICs are used to provide regulated +voltages and other various functionality to Qualcomm SoCs. + += PROPERTIES - compatible: Usage: required @@ -45,7 +48,37 @@ PROPERTIES Value type: <empty> Definition: identifies this node as an interrupt controller -EXAMPLE += SUBCOMPONENTS + +The PMIC contains multiple independent functions, each described in a subnode. +The below bindings specify the set of valid subnodes. + +== Real-Time Clock + +- compatible: + Usage: required + Value type: <string> + Definition: must be one of: + "qcom,pm8058-rtc" + "qcom,pm8921-rtc" + +- reg: + Usage: required + Value type: <prop-encoded-array> + Definition: single entry specifying the base address of the RTC registers + +- interrupts: + Usage: required + Value type: <prop-encoded-array> + Definition: single entry specifying the RTC's alarm interrupt + +- allow-set-time: + Usage: optional + Value type: <empty> + Definition: indicates that the setting of RTC time is allowed by + the host CPU + += EXAMPLE pmicintc: pmic@0 { compatible = "qcom,pm8921"; @@ -55,9 +88,9 @@ EXAMPLE #address-cells = <1>; #size-cells = <0>; - pwrkey { - compatible = "qcom,pm8921-pwrkey"; - interrupt-parent = <&pmicintc>; - interrupts = <50 1>, <51 1>; + rtc@11d { + compatible = "qcom,pm8921-rtc"; + reg = <0x11d>; + interrupts = <0x27 0>; }; }; |