[PATCH 3/6] ufs: Handle UFS 3.0 controllers

[Bhupesh Sharma]

On Wed, 16 Aug 2023 at 02:31, Marek Vasut <marek.vasut at mailbox.org> wrote:
>
> On 8/15/23 19:14, Bhupesh Sharma wrote:
> > On Mon, 14 Aug 2023 at 05:23, Marek Vasut
> > <marek.vasut+renesas at mailbox.org> wrote:
> >>
> >> Extend the version check to handle UFS 3.0 controllers as well.
> >> Tested on R-Car S4 UFS 3.0 controller.
> >>
> >> Signed-off-by: Marek Vasut <marek.vasut+renesas at mailbox.org>
> >> ---
> >> Cc: Faiz Abbas <faiz_abbas at ti.com>
> >> ---
> >>   drivers/ufs/ufs.c | 3 ++-
> >>   drivers/ufs/ufs.h | 1 +
> >>   2 files changed, 3 insertions(+), 1 deletion(-)
> >>
> >> diff --git a/drivers/ufs/ufs.c b/drivers/ufs/ufs.c
> >> index 261ae2843c2..58830c8ddca 100644
> >> --- a/drivers/ufs/ufs.c
> >> +++ b/drivers/ufs/ufs.c
> >> @@ -1903,7 +1903,8 @@ int ufshcd_probe(struct udevice *ufs_dev, struct ufs_hba_ops *hba_ops)
> >>          if (hba->version != UFSHCI_VERSION_10 &&
> >>              hba->version != UFSHCI_VERSION_11 &&
> >>              hba->version != UFSHCI_VERSION_20 &&
> >> -           hba->version != UFSHCI_VERSION_21)
> >> +           hba->version != UFSHCI_VERSION_21 &&
> >> +           hba->version != UFSHCI_VERSION_30)
> >>                  dev_err(hba->dev, "invalid UFS version 0x%x\n",
> >>                          hba->version);
> >>
> >> diff --git a/drivers/ufs/ufs.h b/drivers/ufs/ufs.h
> >> index 33ca5f29812..ef7728fc39e 100644
> >> --- a/drivers/ufs/ufs.h
> >> +++ b/drivers/ufs/ufs.h
> >> @@ -781,6 +781,7 @@ enum {
> >>          UFSHCI_VERSION_11 = 0x00010100, /* 1.1 */
> >>          UFSHCI_VERSION_20 = 0x00000200, /* 2.0 */
> >>          UFSHCI_VERSION_21 = 0x00000210, /* 2.1 */
> >> +       UFSHCI_VERSION_30 = 0x00000300, /* 3.0 */
> >>   };
> >>
> >>   /* Interrupt disable masks */
> >> --
> >> 2.40.1
> >
> > SInce the Qualcomm UFS HC controllers are even newer / greater version
> > values, we can drop this patch in favour of my UFS patch here:
> > https://lists.denx.de/pipermail/u-boot/2023-August/527215.html
>
> Why not keep validating the version ?

How many versions would one want to validate when the newer versions
are 4.1 or greater?