RE: [PATCH v2 2/4] scsi: ufs: Update VCCQ2 and VCCQ min/max voltage hard codes

[Avri Altman]

> 
> From: Can Guo <cang@xxxxxxxxxxxxxx>
> 
> Per UFS 3.0 JEDEC standard, the VCCQ2 min voltage is 1.7v and the VCCQ
> voltage range is 1.14v ~ 1.26v. Update their hard codes accordingly to make
> sure they work in a safe range compliant for ver 1.0/2.0/2.1/3.0 UFS devices.
So to keep it safe, we need to use largest range: 
min_uV = min over all spec ranges, and max_uV = max over all spec ranges.
Meaning leave it as it is if we want to be backward compatible with UFS1.0.

Thanks,
Avri

> 
> Signed-off-by: Can Guo <cang@xxxxxxxxxxxxxx>
> ---
>  drivers/scsi/ufs/ufs.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h index 385bac8..9df4f4d
> 100644
> --- a/drivers/scsi/ufs/ufs.h
> +++ b/drivers/scsi/ufs/ufs.h
> @@ -500,9 +500,9 @@ struct ufs_query_res {
>  #define UFS_VREG_VCC_MAX_UV       3600000 /* uV */
>  #define UFS_VREG_VCC_1P8_MIN_UV    1700000 /* uV */
>  #define UFS_VREG_VCC_1P8_MAX_UV    1950000 /* uV */
> -#define UFS_VREG_VCCQ_MIN_UV      1100000 /* uV */
> +#define UFS_VREG_VCCQ_MIN_UV      1140000 /* uV */
>  #define UFS_VREG_VCCQ_MAX_UV      1300000 /* uV */
> -#define UFS_VREG_VCCQ2_MIN_UV     1650000 /* uV */
> +#define UFS_VREG_VCCQ2_MIN_UV     1700000 /* uV */
>  #define UFS_VREG_VCCQ2_MAX_UV     1950000 /* uV */
> 
>  /*
> --
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