Re: [PATCH v4 2/3] scsi: ufs-qcom: Implement device_reset vops

[Rob Herring]

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@xxxxxxxxxxxxxx>.
> 
> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> ---
> 
> 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@xxxxxxxxxx>