linux-kernel - Re: [RFT PATCH v2 2/3] hwmon: (spd5118) Use spd5118 specific read/write operations

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Message-ID: <9440d6f5-3164-40c9-95a1-00403b7f753e@molgen.mpg.de>
Date: Tue, 18 Jun 2024 23:45:00 +0200
From: Paul Menzel <pmenzel@...gen.mpg.de>
To: Guenter Roeck <linux@...ck-us.net>
Cc: linux-kernel@...r.kernel.org,
 Wolfram Sang <wsa+renesas@...g-engineering.com>,
 René Rebe <rene@...ctcode.de>,
 Thomas Weißschuh <linux@...ssschuh.net>,
 Armin Wolf <W_Armin@....de>, Stephen Horvath <s.horvath@...look.com.au>,
 Sasha Kozachuk <skozachuk@...gle.com>, John Hamrick <johnham@...gle.com>,
 Chris Sarra <chrissarra@...gle.com>, linux-hwmon@...r.kernel.org,
 Jean Delvare <jdelvare@...e.com>
Subject: Re: [RFT PATCH v2 2/3] hwmon: (spd5118) Use spd5118 specific
 read/write operations

Dear Guenter,


Am 18.06.24 um 23:08 schrieb Guenter Roeck:

> On 6/18/24 13:37, Paul Menzel wrote:
> [ ... ]
>> Unfortunately, it still fails:
>>
>>      $ git log --no-decorate --oneline -4
>>      7ddcff2d44ae3 hwmon: (spd5118) Add support for Renesas/ITD SPD5118 hub controllers
>>      e89136743324f hwmon: (spd5118) Use spd5118 specific read/write operations
>>      0fcc7279f0cc4 hwmon: (spd5118) Use regmap to implement paging
>>      801b6aad6fa7a hwmon: (spd5118) Add configuration option for auto-detection
>>
>>      $ uname -r
>>      6.10.0-rc4.mx64.461-00050-g7ddcff2d44ae
>>      $ sudo bash -c 'echo 56000 > /sys/class/hwmon/hwmon3/temp1_max'
>>      bash: line 1: echo: write error: No such device or address
> 
> Now I am really baffled. I don't think we could do anything simpler
> than that.
> 
> Please try
>      sudo i2cset -y -f 0 0x50 0x21 0x06
> 
> That should update the critical temperature from 85 degrees C
> to 86 degrees C. If that doesn't work, we'll be really out of luck
> with that controller (or at least I don't have an idea what else to try).

Bad news:

     $ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cset -y -f 0 
0x50 0x21 0x06
     Error: Write failed


Kind regards,

Paul