linux-kernel - Re: [PATCH 2/3] hwmon: Add support for SPD5118 compliant temperature sensors

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Date: Thu, 30 May 2024 15:57:22 +0200
From: Thomas Weißschuh <thomas@...ch.de>
To: Guenter Roeck <linux@...ck-us.net>
Cc: linux-hwmon@...r.kernel.org, Hristo Venev <hristo@...ev.name>, 
	René Rebe <rene@...ctcode.de>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Radu Sabau <radu.sabau@...log.com>
Subject: Re: [PATCH 2/3] hwmon: Add support for SPD5118 compliant temperature
 sensors

On 2024-05-30 06:47:17+0000, Guenter Roeck wrote:
> On 5/30/24 03:51, Thomas Weißschuh wrote:
> > On 2024-05-29 13:52:03+0000, Guenter Roeck wrote:
> > > Add support for SPD5118 (Jedec JESD300-5B.01) compliant temperature
> > > sensors. Such sensors are typically found on DDR5 memory modules.
> > > 
> > > Cc: René Rebe <rene@...ctcode.de>
> > > Signed-off-by: Guenter Roeck <linux@...ck-us.net>
> > > ---
> > > Tested on MAG B650 TOMAHAWK WIFI with CMH32GX5M2B6000Z30
> > > (Corsair Venegance DDR5).
> > > 
> > > René: I included you as MODULE_AUTHOR since the patch is derived from
> > >        your driver. Please let me know if you prefer not to be listed as
> > >        author.
> > > 
> > >   Documentation/hwmon/index.rst   |   1 +
> > >   Documentation/hwmon/spd5118.rst |  60 ++++
> > >   drivers/hwmon/Kconfig           |  12 +
> > >   drivers/hwmon/Makefile          |   1 +
> > >   drivers/hwmon/spd5118.c         | 482 ++++++++++++++++++++++++++++++++
> > >   5 files changed, 556 insertions(+)
> > >   create mode 100644 Documentation/hwmon/spd5118.rst
> > >   create mode 100644 drivers/hwmon/spd5118.c
> > 
> > With the Makefile and detect callback fixed:
> > 
> > Reviewed-by: Thomas Weißschuh <linux@...ssschuh.net>
> > Tested-by: Thomas Weißschuh <linux@...ssschuh.net>
> 
> Thanks a lot for the feedback!
> 
> If it is not too much trouble, could you send me a register dump ?
> The one I have is from Montage Technology M88SPD5118, and I'd like to get
> a few more to improve my module test script.

>From a Kingston KF556S40-32:

# i2cdump 20 0x50
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: 51 18 0a 86 32 03 32 00 00 00 00 07 ff 3c 00 00    Q???2?2....?.<..
10: 00 00 00 00 00 00 00 00 00 00 00 00 70 03 00 00    ............p?..
20: 50 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00    P?..............
30: 00 f0 01 00 00 00 00 00 00 00 00 00 00 00 00 00    .??.............
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................