linux-kernel - Re: Suspend/resume failing due to SPD5118

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Message-ID: <20250503003333.5693-1-carlon.luca@gmail.com>
Date: Sat,  3 May 2025 02:33:33 +0200
From: Luca Carlon <carlon.luca@...il.com>
To: w_armin@....de
Cc: carlon.luca@...il.com,
	jdelvare@...e.com,
	linux-hwmon@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux@...ck-us.net,
	lucas.demarchi@...el.com
Subject: Re: Suspend/resume failing due to SPD5118

> Interesting, please check which i2c controller handles the SPD5118 chip (cat /sys/bus/i2c/devices/i2c-1/name).

$ cat /sys/bus/i2c/devices/i2c-1/name
SMBus I801 adapter at efa0

> Can you access the i2c bus (using i2cdetect) and/or the spd5118 chip after such a failed resume attempt?

In my case, the suspend fails, and therefore I do not think I can reach the resume.

However, if you mean to list the installed busses, this is the list before trying to suspend:

i2c-0   unknown         Synopsys DesignWare I2C adapter         N/A
i2c-1   unknown         SMBus I801 adapter at efa0              N/A
i2c-2   i2c             i915 gmbus dpa                          I2C adapter
i2c-3   i2c             i915 gmbus dpb                          I2C adapter
i2c-4   i2c             i915 gmbus dpc                          I2C adapter
i2c-5   i2c             i915 gmbus dpd                          I2C adapter
i2c-6   i2c             i915 gmbus tc1                          I2C adapter
i2c-7   i2c             AUX A/DDI A/PHY A                       I2C adapter
i2c-8   i2c             AUX C/DDI C/PHY C                       I2C adapter
i2c-9   i2c             AUX D/DDI D/PHY D                       I2C adapter

after the failed attempt, the list is unchanged.

If this is not what you wanted, please let me know, I can try to provide more info.

Thank you.

Luca Carlon