Re: [PATCH v2 0/5] hw/arm: Add NPCM7XX Tachometer Device

[Peter Maydell]

On Thu, 11 Mar 2021 at 18:08, Hao Wu <wuhaotsh@google.com> wrote:
>
> This patch set implements the Tachometer (a.k.a Multi Functional Timer/MFT)
> device in NPCM7XX SoC. This device is used by NPCM7XX boards to measure
> the RPM of PWM fans.
>
> To provide the RPM of a certain fan, since RPM = MAX_RPM * duty_percentage.
> We convert the duty output in NPCM7XX PWM module into GPIOs and feed them
> into the MFT module.
>
> The connection of PWM modules and fan modules are derived from their specific
> Linux device trees and coded in hw/arm/npcm7xx_boards.c.
>
> We amend the QTest for the PWM module to include verifying the reading from
> the Tachometer is correct.



Applied to target-arm.next, thanks.

-- PMM