linux-kernel - Re: [PATCH v4 2/3] scsi: ufs-qcom: Implement device

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Message-ID: <5d6d1b6c.1c69fb81.e1729.0655@mx.google.com>
Date:   Mon, 02 Sep 2019 14:38:51 +0100
From:   Rob Herring <robh@...nel.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Andy Gross <agross@...nel.org>, Bean Huo <beanhuo@...ron.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-scsi@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH v4 2/3] scsi: ufs-qcom: Implement device_reset vops

On Wed, 28 Aug 2019 12:17:55 -0700, Bjorn Andersson wrote:
> The UFS_RESET pin on Qualcomm SoCs are controlled by TLMM and exposed
> through the GPIO framework. Acquire the device-reset GPIO and use this
> to implement the device_reset vops, to allow resetting the attached
> memory.
> 
> Based on downstream support implemented by Subhash Jadavani
> <subhashj@...eaurora.org>.
> 
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> ---
> 
> Changes since v3:
> - Renamed device-reset-gpios to just reset-gpios.
> - Explicitly bail on !host->device_reset, to not rely on passing NULL to
>   gpiod_set_value_cansleep()
> 
>  .../devicetree/bindings/ufs/ufshcd-pltfrm.txt |  2 ++
>  drivers/scsi/ufs/ufs-qcom.c                   | 36 +++++++++++++++++++
>  drivers/scsi/ufs/ufs-qcom.h                   |  4 +++
>  3 files changed, 42 insertions(+)
> 

Acked-by: Rob Herring <robh@...nel.org>