linux-kernel - RE: [PATCH 0/3] (Qualcomm) UFS device reset support

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Date:   Wed, 5 Jun 2019 05:50:36 +0000
From:   Avri Altman <Avri.Altman@....com>
To:     John Stultz <john.stultz@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
CC:     Andy Gross <agross@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Pedro Sousa <pedrom.sousa@...opsys.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>
Subject: RE: [PATCH 0/3] (Qualcomm) UFS device reset support

Hi,

> 
> On Tue, Jun 4, 2019 at 12:22 AM Bjorn Andersson
> <bjorn.andersson@...aro.org> wrote:
> >
> > This series exposes the ufs_reset line as a gpio, adds support for ufshcd to
> > acquire and toggle this and then adds this to SDM845 MTP.
> >
> > Bjorn Andersson (3):
> >   pinctrl: qcom: sdm845: Expose ufs_reset as gpio
> >   scsi: ufs: Allow resetting the UFS device
> >   arm64: dts: qcom: sdm845-mtp: Specify UFS device-reset GPIO
> 
> Adding similar change as in sdm845-mtp to the not yet upstream
> blueline dts, I validated this allows my micron UFS pixel3 to boot.
> 
> Tested-by: John Stultz <john.stultz@...aro.org>
Maybe ufs_hba_variant_ops would be the proper place to add this?

Thanks,
Avri



> 
> thanks
> -john