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authorTomasz Figa <t.figa@samsung.com>2013-08-23 19:22:21 +0200
committerChanho Park <chanho61.park@samsung.com>2014-03-20 17:34:53 +0900
commit278848c320e45cdee8a5351c71088d38a0014a5a (patch)
tree64f22c2025586368301e779e5557c96c282dfe12 /Documentation
parenta1e7a5afbe9add49a0553f190b9dc731622cd069 (diff)
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clk: max77686: Register OF clock provider
If max77686 chip is instantiated from device tree, it is desirable to have an OF clock provider to allow device tree based look-up of clocks. This patch adds OF clock provider registration to the clk-max77686 driver. Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/clock/maxim,max77686.txt38
-rw-r--r--Documentation/devicetree/bindings/mfd/max77686.txt3
2 files changed, 41 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/clock/maxim,max77686.txt b/Documentation/devicetree/bindings/clock/maxim,max77686.txt
new file mode 100644
index 00000000000..96ce71bbd74
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/maxim,max77686.txt
@@ -0,0 +1,38 @@
+Binding for Maxim MAX77686 32k clock generator block
+
+This is a part of device tree bindings of MAX77686 multi-function device.
+More information can be found in bindings/mfd/max77686.txt file.
+
+The MAX77686 contains three 32.768khz clock outputs that can be controlled
+(gated/ungated) over I2C.
+
+Following properties should be presend in main device node of the MFD chip.
+
+Required properties:
+- #clock-cells: simple one-cell clock specifier format is used, where the
+ only cell is used as an index of the clock inside the provider. Following
+ indices are allowed:
+ - 0: 32khz_ap clock,
+ - 1: 32khz_cp clock,
+ - 2: 32khz_pmic clock.
+
+Example: Node of the MFD chip
+
+ max77686: max77686@09 {
+ compatible = "maxim,max77686";
+ interrupt-parent = <&wakeup_eint>;
+ interrupts = <26 0>;
+ reg = <0x09>;
+ #clock-cells = <1>;
+
+ /* ... */
+ };
+
+Example: Clock consumer node
+
+ foo@0 {
+ compatible = "bar,foo";
+ /* ... */
+ clock-names = "my-clock";
+ clocks = <&max77686 2>;
+ };
diff --git a/Documentation/devicetree/bindings/mfd/max77686.txt b/Documentation/devicetree/bindings/mfd/max77686.txt
index c6a3469d343..678f3cf0b8f 100644
--- a/Documentation/devicetree/bindings/mfd/max77686.txt
+++ b/Documentation/devicetree/bindings/mfd/max77686.txt
@@ -7,6 +7,9 @@ different i2c slave address,presently for which we are statically creating i2c
client while probing.This document describes the binding for mfd device and
PMIC submodule.
+Binding for the built-in 32k clock generator block is defined separately
+in bindings/clk/maxim,max77686.txt file.
+
Required properties:
- compatible : Must be "maxim,max77686";
- reg : Specifies the i2c slave address of PMIC block.