[RESEND v7 1/5] mfd: hi655x: Add document for mfd hi665x PMIC

From: Chen Feng
Date: Mon Feb 01 2016 - 04:16:55 EST


DT bindings for hisilicon hi655x MFD PMIC chip.

Signed-off-by: Chen Feng <puck.chen@xxxxxxxxxxxxx>
Signed-off-by: Fei Wang <w.f@xxxxxxxxxx>
Signed-off-by: Xinwei Kong <kong.kongxinwei@xxxxxxxxxxxxx>
Reviewed-by: Haojian Zhuang <haojian.zhuang@xxxxxxxxxx>
---
.../devicetree/bindings/mfd/hisilicon,hi655x.txt | 27 ++++++++++++++++++++++
1 file changed, 27 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/hisilicon,hi655x.txt

diff --git a/Documentation/devicetree/bindings/mfd/hisilicon,hi655x.txt b/Documentation/devicetree/bindings/mfd/hisilicon,hi655x.txt
new file mode 100644
index 0000000..5edc310
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/hisilicon,hi655x.txt
@@ -0,0 +1,27 @@
+Hisilicon hi655x Power Management Integrated Circuit (PMIC)
+
+The hardware layout for access PMIC Hi655x from AP SoC Hi6220.
+Between PMIC Hi655x and Hi6220, the physical signal channel is SSI.
+We can use memory-mapped I/O to communicate.
+
++----------------+ +-------------+
+| | | |
+| Hi6220 | SSI bus | Hi655x |
+| |-------------| |
+| |(REGMAP_MMIO)| |
++----------------+ +-------------+
+
+Required properties:
+- compatible: Should be "hisilicon,hi655x-pmic"
+- reg: Base address of PMIC on hi6220 soc
+- interrupt-controller: Hi655x has internal IRQs (has own IRQ domain).
+- pmic-gpios: The gpio used by PMIC irq.
+
+Example:
+ pmic: pmic@f8000000 {
+ compatible = "hisilicon,hi655x-pmic";
+ reg = <0x0 0xf8000000 0x0 0x1000>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ pmic-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
+ }
--
1.9.1