From: Florian Fainelli <florian.fainelli@broadcom.com>
To: Shubham Chakraborty <chakrabortyshubham66@gmail.com>,
Guenter Roeck <linux@roeck-us.net>,
Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <skhan@linuxfoundation.org>,
Broadcom internal kernel review list
<bcm-kernel-feedback-list@broadcom.com>,
Ray Jui <rjui@broadcom.com>,
Scott Branden <sbranden@broadcom.com>,
linux-hwmon@vger.kernel.org, linux-doc@vger.kernel.org,
linux-rpi-kernel@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 2/3] hwmon: raspberrypi: Add voltage input support
Date: Tue, 19 May 2026 08:28:14 -0700 [thread overview]
Message-ID: <31af08eb-8299-4ba9-aaa7-3150ce31b523@broadcom.com> (raw)
In-Reply-To: <20260517080445.103962-3-chakrabortyshubham66@gmail.com>
On 5/17/26 01:04, Shubham Chakraborty wrote:
> Extend the raspberrypi-hwmon driver to expose firmware-provided
> voltage measurements through the hwmon subsystem.
>
> The driver now exports the following voltage inputs:
>
> - in0_input (core)
> - in1_input (sdram_c)
> - in2_input (sdram_i)
> - in3_input (sdram_p)
>
> Voltage values returned by firmware are converted from microvolts
> to millivolts as expected by the hwmon subsystem.
>
> Update the documentation related to it.
>
> The existing undervoltage sticky alarm handling is preserved and
> associated with the first voltage channel.
>
> Tested in -
> - Raspberry Pi 3b+ (Linux raspberrypi 6.12.75+rpt-rpi-v8 #1 SMP PREEMPT
> Debian 1:6.12.75-1+rpt1 (2026-03-11) aarch64 GNU/Linux)
>
> Signed-off-by: Shubham Chakraborty <chakrabortyshubham66@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
--
Florian
next prev parent reply other threads:[~2026-05-19 15:28 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20260516164407.25255-1-chakrabortyshubham66@gmail.com>
2026-05-16 19:15 ` [PATCH v2 0/2] raspberrypi: firmware and hwmon voltage support Shubham Chakraborty
2026-05-16 19:15 ` [PATCH v2 1/2] soc: bcm2835: raspberrypi-firmware: Add voltage domain IDs Shubham Chakraborty
2026-05-16 23:09 ` Guenter Roeck
2026-05-16 19:15 ` [PATCH v2 2/2] hwmon: raspberrypi: Add voltage input support Shubham Chakraborty
2026-05-16 23:20 ` Guenter Roeck
2026-05-17 8:04 ` [PATCH v3 0/3] raspberrypi-hwmon voltage support and teardown fix Shubham Chakraborty
2026-05-17 8:04 ` [PATCH v3 1/3] soc: bcm2835: raspberrypi-firmware: Add voltage domain IDs Shubham Chakraborty
2026-05-18 22:17 ` Guenter Roeck
2026-05-19 15:29 ` Florian Fainelli
2026-05-20 13:35 ` Guenter Roeck
2026-05-17 8:04 ` [PATCH v3 2/3] hwmon: raspberrypi: Add voltage input support Shubham Chakraborty
2026-05-19 15:28 ` Florian Fainelli [this message]
2026-05-20 13:37 ` Guenter Roeck
2026-05-17 8:04 ` [PATCH v3 3/3] hwmon: raspberrypi: Fix delayed-work teardown race Shubham Chakraborty
2026-05-20 13:39 ` Guenter Roeck
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