Re: [PATCH v3 3/3] hwmon: Add Baikal-T1 PVT sensor driver

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On Wed, May 27, 2020 at 09:58:00AM -0700, Guenter Roeck wrote:
> On 5/27/20 9:52 AM, Serge Semin wrote:
> > On Wed, May 27, 2020 at 09:25:49AM -0700, Guenter Roeck wrote:
> >> On Tue, May 26, 2020 at 04:38:23PM +0300, Serge Semin wrote:
> > 
> > [nip]
> > 
> >>> +
> >>> +=============================== ======= =======================================
> >>> +Name				Perm	Description
> >>> +=============================== ======= =======================================
> >>> +update_interval			RW	Measurements update interval per
> >>> +					sensor.
> >>> +temp1_type			RO	Sensor type (always 1 as CPU embedded
> >>> +					diode).
> >>> +temp1_label			RO	CPU Core Temperature sensor.
> >>> +temp1_input			RO	Measured temperature in millidegree
> >>> +					Celsius.
> >>> +temp1_min			RW	Low limit for temp input.
> >>> +temp1_max			RW	High limit for temp input.
> >>> +temp1_min_alarm			RO	Temperature input alarm. Returns 1 if
> >>> +					temperature input went below min limit,
> >>> +					0 otherwise.
> >>> +temp1_max_alarm			RO	Temperature input alarm. Returns 1 if
> >>> +					temperature input went above max limit,
> >>> +					0 otherwise.
> >>> +temp1_trim			RW	Temperature sensor trimming factor in
> >>> +					millidegree Celsius. It can be used to
> >>> +					manually adjust the temperature
> >>> +					measurements within 7.130 degrees
> >>> +					Celsius.
> >>
> >> vs. standard ABI:
> >>
> >> temp[1-*]_offset`
> >>                 Temperature offset which is added to the temperature reading
> >>                 by the chip.
> >>
> >>                 Unit: millidegree Celsius
> >>
> >> If you really think this is necessary, why not use the standard ABI ?
> > 
> > That would have made much more sense.) I'll replace the handwritten temp1_trim
> > with the standard temp1_offset attribute in v4 shortly today. Thanks for pointing
> > this out.
> > 
> 
> Sorry for not realizing this earlier. The added explanation
> made all the difference.

No worries. I'll fix it in v4. What about the clk_get_rate() part of the code?
You had a comment regarding it in v2. I responded with justification that we can
leave it as is. If you still disagree, then I create the clock rate caching in the
private data at the probe() stage.

-Sergey

> 
> Guenter



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