From: Vinod Koul <vkoul@kernel.org>
To: cang@codeaurora.org
Cc: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>,
asutoshd@codeaurora.org, nguyenb@codeaurora.org,
Rajendra Nayak <rnayak@codeaurora.org>,
linux-scsi@vger.kernel.org, kernel-team@android.com,
saravanak@google.com, salyzyn@google.com,
Andy Gross <agross@kernel.org>,
Alim Akhtar <alim.akhtar@samsung.com>,
Avri Altman <avri.altman@wdc.com>,
Pedro Sousa <pedrom.sousa@synopsys.com>,
"James E.J. Bottomley" <jejb@linux.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
"open list:ARM/QUALCOMM SUPPORT" <linux-arm-msm@vger.kernel.org>,
open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v5 2/7] scsi: ufs-qcom: Add reset control support for host controller
Date: Tue, 17 Dec 2019 09:43:42 +0530 [thread overview]
Message-ID: <20191217041342.GM2536@vkoul-mobl> (raw)
In-Reply-To: <091562cbe7d88ca1c30638bc10197074@codeaurora.org>
Hi Can,
On 17-12-19, 08:37, cang@codeaurora.org wrote:
> On 2019-12-17 03:12, Jeffrey Hugo wrote:
> > On Mon, Dec 16, 2019 at 12:05 PM Vinod Koul <vkoul@kernel.org> wrote:
> > >
> > > Hi Can,
> > >
> > > On 14-11-19, 22:09, Can Guo wrote:
> > > > Add reset control for host controller so that host controller can be reset
> > > > as required in its power up sequence.
> > >
> > > I am seeing a regression on UFS on SM8150-mtp with this patch. I think
> > > Jeff is seeing same one lenove laptop on 8998.
> >
> > Confirmed.
> >
> > >
> > > 845 does not seem to have this issue and only thing I can see is
> > > that on
> > > sm8150 and 8998 we define reset as:
> > >
> > > resets = <&gcc GCC_UFS_BCR>;
> > > reset-names = "rst";
> > >
>
> Hi Jeffrey and Vinod,
>
> Thanks for reporting this. May I know what kind of regression do you see on
> 8150 and 8998?
> BTW, do you have reset control for UFS PHY in your DT?
> See 71278b058a9f8752e51030e363b7a7306938f64e.
>
> FYI, we use reset control on all of our platforms and it is
> a must during our power up sequence.
Yes we do have this and additionally both the DTS describe a 'rst' reset
and this patch tries to use this.
Can you please tell me which platform this was tested on how the reset
was described in DT
Thanks
--
~Vinod
next prev parent reply other threads:[~2019-12-17 4:13 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-15 6:09 [PATCH v5 0/7] UFS driver general fixes bundle 3 Can Guo
2019-11-15 6:09 ` [PATCH v5 1/7] scsi: ufs: Add device reset in link recovery path Can Guo
2019-11-15 6:25 ` Stanley Chu
2019-11-15 6:09 ` [PATCH v5 2/7] scsi: ufs-qcom: Add reset control support for host controller Can Guo
2019-11-15 10:08 ` Avri Altman
2019-12-16 19:04 ` Vinod Koul
2019-12-16 19:12 ` Jeffrey Hugo
2019-12-17 0:37 ` cang
2019-12-17 4:13 ` Vinod Koul [this message]
2019-12-17 7:10 ` cang
2019-12-17 9:24 ` Vinod Koul
2019-12-17 10:09 ` cang
2019-12-17 15:08 ` Vinod Koul
2019-12-17 16:00 ` Jeffrey Hugo
2019-12-17 18:44 ` cang
2019-12-18 4:12 ` Vinod Koul
2019-12-19 7:12 ` cang
2019-12-19 14:21 ` Vinod Koul
2019-12-19 14:25 ` Jeffrey Hugo
2019-12-19 14:52 ` Vinod Koul
2019-12-20 0:30 ` cang
2019-11-15 6:09 ` [PATCH v5 3/7] scsi: ufs: Fix up auto hibern8 enablement Can Guo
2019-11-15 6:35 ` Stanley Chu
2019-11-15 7:03 ` Can Guo
2019-11-15 7:18 ` Stanley Chu
2019-11-15 12:27 ` Can Guo
2019-11-15 13:46 ` Stanley Chu
2019-11-15 6:09 ` [PATCH v5 4/7] scsi: ufs: Fix register dump caused sleep in atomic context Can Guo
2019-11-15 6:09 ` [PATCH v5 5/7] scsi: ufs: Fix irq return code Can Guo
2019-11-15 6:09 ` [PATCH v5 6/7] scsi: ufs: Abort gating if clock on request is pending Can Guo
2019-11-15 6:09 ` [PATCH v5 7/7] scsi: ufs: Fix error handing during hibern8 enter Can Guo
2019-11-15 10:12 ` Avri Altman
2019-11-17 16:36 ` [EXT] " Bean Huo (beanhuo)
2019-11-19 4:28 ` [PATCH v5 0/7] UFS driver general fixes bundle 3 Martin K. Petersen
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