Re: [PATCH V5 3/8] backlight: qcom-wled: Add new properties for PMI8998

From: kgunda
Date: Wed Aug 29 2018 - 01:52:39 EST


On 2018-08-27 15:31, Pavel Machek wrote:
Hi!

On Fri 2018-08-24 15:57:42, Kiran Gunda wrote:
Update the bindings with the new properties used for
PMI8998.

Changes from V3:
- Removed the default values.

Why?

As per Bjorn's comment I have removed the default values.
Do you want to add them back ?

+- qcom,current-limit-microamp
+ Usage: optional
+ Value type: <u32>
+ Definition: uA; per-string current limit; value from 0 to 30000 with
+ 2500 uA step.

- qcom,current-boost-limit
Usage: optional
Value type: <u32>
Definition: mA; boost current limit.
For pm8941: one of: 105, 385, 525, 805, 980, 1260, 1400,
- 1680. Default: 805 mA
+ 1680.
For pmi8998: one of: 105, 280, 450, 620, 970, 1150, 1300,
- 1500. Default: 970 mA
+ 1500.


I'd say that optional properties should list default values...?

Same as above.

- qcom,ovp
Usage: optional
Value type: <u32>
Definition: V; Over-voltage protection limit; one of:
- 27, 29, 32, 35. default: 29V
+ 27, 29, 32, 35.
This property is supported only for PM8941.


Same here.

Same as above.
+- qcom,ovp-millivolt
+ Usage: optional
+ Value type: <u32>
+ Definition: mV; Over-voltage protection limit;
+ For pmi8998: one of 18100, 19600, 29600, 31100
+ If this property is not specified for PM8941, it
+ falls back to "qcom,ovp" property.
+

"voltage-limit-millivolt"? "ovp" is not really well known acronym.
Pavel
"ovp" is already being used in pm8941-wled.c driver. That's why I am using ovp-millivolt.
If I rename this, i think I have to rename the existing "qcom,ovp" also, which will break
the backward compatibility.