On 10/03/2014 05:27 AM, Mark Rutland wrote:
On Thu, Oct 02, 2014 at 07:37:48PM +0100, atull@xxxxxxxxxxxxxxxxxxxxx wrote:
From: Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx>
Add device tree bindings documentation for ltc2978.
Signed-off-by: Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx>
---
v2: clean whitespace
---
.../devicetree/bindings/hwmon/ltc2978.txt | 41 ++++++++++++++++++++
1 file changed, 41 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/ltc2978.txt
diff --git a/Documentation/devicetree/bindings/hwmon/ltc2978.txt b/Documentation/devicetree/bindings/hwmon/ltc2978.txt
new file mode 100644
index 0000000..b2d9c4d
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/ltc2978.txt
@@ -0,0 +1,41 @@
+ltc2978
+
+Required properties:
+ - compatible: one of: ltc2974, ltc2977, ltc2978, ltc3880, ltc3883, ltm4676
Could we please format this like:
- compatible: should contain one of:
* "ltc2974"
* "ltc2977"
* "ltc2978"
* "ltc3880"
* "ltc3883"
* "ltm4676"
Given the file name, are these all variants of ltc2978?
All the chips supported by the ltc2978 driver. Some are variants
of the ltc2978, some have different functionality.
[ should those be "linear,ltc2974" and so on ? ]
Guenter
+ - reg: I2C address
+
+Optional properties:
+ Name of the optional regulator subnode must be "regulators".
+ - #address-cells must be 1.
What's the single address cell used for?
+ - #size-cells must be 0.
+
+ For each regulator:
+ - reg: regulator number
Which can be...?
What does this correspond to in the HW?
+ - regulator-compatible: must be vout_en<regulator number> such as vout_en3
+ valid range is:
+ ltc2977, ltc2978 : vout_en0 - vout_en7
+ ltc2974 : vout_en0 - vout_en3
+ ltc3880, ltm4676 : vout_en0 - vout_en1
+ ltc3883 : vout_en0 only
In other bindings I believe I've seen the node name used for this.
Mark, what's the preferred scheme for identifying regulators in a
container node?
+ - regulator-name: arbitrary name for regulator
Drop the 'aribtarary'. Either this should be the name of the regulator
on the board, or it shouldn't be necessary.
Mark.
+
+Example:
+ltc2978@5e {
+ compatible = "ltc2978";
+ reg = <0x5e>;
+ regulators {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ vdacp0_reg: regulator@0 {
+ reg = <0>;
+ regulator-compatible = "vout_en0";
+ regulator-name = "FPGA-2.5V";
+ };
+ vdacp2_reg: regulator@2 {
+ reg = <2>;
+ regulator-compatible = "vout_en2";
+ regulator-name = "FPGA-1.5V";
+ };
+ };
+};
--
1.7.9.5
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