linux-kernel - Re: [PATCH v3] scsi: ufs: Allow RTT negotiation

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Message-ID: <982ae15e-d3f2-4d0e-983d-fc2c55e6411b@acm.org>
Date: Wed, 15 May 2024 07:08:16 -0600
From: Bart Van Assche <bvanassche@....org>
To: Avri Altman <Avri.Altman@....com>,
 "Martin K . Petersen" <martin.petersen@...cle.com>
Cc: Bean Huo <beanhuo@...ron.com>, Peter Wang <peter.wang@...iatek.com>,
 "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] scsi: ufs: Allow RTT negotiation

On 5/14/24 22:56, Avri Altman wrote:
> Via ufs-utils - https://github.com/westerndigitalcorporation/ufs-utils
> You may remember - this is why we needed the ufs-bsg interface we added few years ago.
> Ufs-utils is the industry standard with respect of configuring and provisioning ufs devices,
> And currently is being used by the vast majority of ufs stake-holders:
> device manufacturers, platform manufacturers, mobile vendors, etc.

Given the importance of the RTT parameter, please provide a sysfs 
attribute for reading and configuring this parameter. UFS users should
not be encouraged to change UFS device parameters without the UFSHCI
driver being aware of these changes.

Thanks,

Bart.