linux-kernel - Re: [PATCH V1 0/2] Get real time power input via AMD PMF

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Message-ID: <a77c3b39-49e2-481f-af53-70b5fbe58ffd@amd.com>
Date: Thu, 11 Dec 2025 12:22:14 -0600
From: Mario Limonciello <mario.limonciello@....com>
To: Lizhi Hou <lizhi.hou@....com>, ilpo.jarvinen@...ux.intel.com,
 hansg@...nel.org, ogabbay@...nel.org, quic_jhugo@...cinc.com,
 maciej.falkowski@...ux.intel.com
Cc: linux-kernel@...r.kernel.org, max.zhen@....com, sonal.santan@....com,
 platform-driver-x86@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 Shyam-sundar.S-k@....com, VinitKumar.Shukla@....com
Subject: Re: [PATCH V1 0/2] Get real time power input via AMD PMF

On 12/11/25 11:58 AM, Lizhi Hou wrote:
> Adding new NPU metrics API to AMD PMF driver is pending because of
> lacking real case.
>    https://lore.kernel.org/all/d344b850-f68d-f9a5-f0dc-55af4b48b714@linux.intel.com/
> 
> Create xdna driver patch to fetch real time power input via PMF API.
> Here is an example output with xrt-smi(1) tool.
> 
> # xrt-smi examine -r all | grep Power
>    Power Mode             : Default
> Estimated Power          : 0.563 Watts
> 
> Lizhi Hou (1):
>    accel/amdxdna: Add IOCTL to retrieve realtime NPU power estimate
> 
> Shyam Sundar S K (1):
>    platform/x86/amd/pmf: Introduce new interface to export NPU metrics
> 
>   drivers/accel/amdxdna/aie2_pci.c        | 29 ++++++++++
>   drivers/accel/amdxdna/aie2_pci.h        | 18 ++++++
>   drivers/accel/amdxdna/amdxdna_pci_drv.c |  3 +-
>   drivers/platform/x86/amd/pmf/core.c     | 75 +++++++++++++++++++++++++
>   drivers/platform/x86/amd/pmf/pmf.h      |  2 +
>   include/linux/amd-pmf-io.h              | 21 +++++++
>   6 files changed, 147 insertions(+), 1 deletion(-)
> 

Do you have a preference on how this gets merged ? Should it go through 
drm-next or platform-x86-next?

I suppose whoever is going to have more development layering on top the 
next cycle it would be preferable to put in that tree.