linux-kernel - Re: [PATCH] nvme-pci: avoid the deepest sleep state on ZHITAI TiPro5000 SSDs

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Date:   Wed, 5 Oct 2022 03:43:05 +0000
From:   Chaitanya Kulkarni <chaitanyak@...dia.com>
To:     Xi Ruoyao <xry111@...111.site>,
        "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Christoph Hellwig <hch@....de>,
        Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...com>,
        Sagi Grimberg <sagi@...mberg.me>,
        Ning Wang <ningwang35@...look.com>,
        Chang Feng <flukehn@...il.com>
Subject: Re: [PATCH] nvme-pci: avoid the deepest sleep state on ZHITAI
 TiPro5000 SSDs

On 9/28/22 02:39, Xi Ruoyao wrote:
> ZHITAI TiPro5000 SSDs has the same APST sleep problem as its cousin,
> TiPro7000.  The quirk for TiPro7000 has been added in
> commit 6b961bce50e4 ("nvme-pci: avoid the deepest sleep state on
> ZHITAI TiPro7000 SSDs"), use the same quirk for TiPro5000.
> 
> The ASPT data from "nvme id-ctrl /dev/nvme1":
> 
> vid       : 0x1e49
> ssvid     : 0x1e49
> sn        : ZTA21T0KA2227304LM
> mn        : ZHITAI TiPlus5000 1TB
> fr        : ZTA09139
> [...]
> ps    0 : mp:6.50W operational enlat:0 exlat:0 rrt:0 rrl:0
>           rwt:0 rwl:0 idle_power:- active_power:-
> ps    1 : mp:5.80W operational enlat:0 exlat:0 rrt:1 rrl:1
>           rwt:1 rwl:1 idle_power:- active_power:-
> ps    2 : mp:3.60W operational enlat:0 exlat:0 rrt:2 rrl:2
>           rwt:2 rwl:2 idle_power:- active_power:-
> ps    3 : mp:0.0500W non-operational enlat:5000 exlat:10000 rrt:3 rrl:3
>           rwt:3 rwl:3 idle_power:- active_power:-
> ps    4 : mp:0.0025W non-operational enlat:8000 exlat:45000 rrt:4 rrl:4
>           rwt:4 rwl:4 idle_power:- active_power:-
> 
> Reported-and-tested-by: Chang Feng <flukehn@...il.com>
> Signed-off-by: Xi Ruoyao <xry111@...111.site>


Looks good.

Reviewed-by: Chaitanya Kulkarni <kch@...dia.com>

-ck