[PATCH v3 2/3] hwmon: raspberrypi: Add voltage input support

[Florian Fainelli]

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 at gmail.com>

Reviewed-by: Florian Fainelli <florian.fainelli at broadcom.com>
-- 
Florian