lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Fri, 19 Aug 2022 10:57:58 +0300
From:   "Farber, Eliav" <farbere@...zon.com>
To:     Guenter Roeck <linux@...ck-us.net>
CC:     <jdelvare@...e.com>, <robh+dt@...nel.org>, <mark.rutland@....com>,
        <linux-hwmon@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <talel@...zon.com>,
        <hhhawa@...zon.com>, <jonnyc@...zon.com>, <hanochu@...zon.com>,
        <ronenk@...zon.com>, <itamark@...zon.com>, <shellykz@...zon.com>,
        <shorer@...zon.com>, <amitlavi@...zon.com>, <almogbs@...zon.com>,
        <dwmw@...zon.co.uk>, <rtanwar@...linear.com>,
        "Farber, Eliav" <farbere@...zon.com>
Subject: Re: [PATCH v2 14/16] hwmon: (mr75203) parse thermal coefficients from
 device-tree

On 8/18/2022 11:28 PM, Guenter Roeck wrote:
> The calculation was just changed to use new defaults in a previous
> patch. This patch makes it quite clear that the coefficients
> are implementation (?) dependent. So the previous patch just changes
> the defaults to (presumably) the coefficients used in your system.
> That is inappropriate. Adding non-default corefficients is ok
> and makes sense is supported by the chip, but changing defaults
> isn't.
The calculation was changed in previous patch to match series 5 of the
Moortec Embedded Temperature Sensor (METS) datasheet.
In our SOC we use series 6 which has a slightly different equation and
different coefficients.
I did the changes in steps.
With this last change, both series 5 and 6 are supported, in addition to
calibrated vs. non-calibrated modes.
In addition the data sheet just recommends default values but they also
specifically mention that actual values might vary from product to product.

--
Regards, Eliav

Powered by blists - more mailing lists