Newer revisions of QUALCOMM Technologies UFS host controller may not
advertise the correct version information in UFS HCI VER register.
To handle this, enable UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION to let
UFS standard host controller driver call into vendor specific
operation to get right UFS HCI VER register value.
Signed-off-by: Yaniv Gardi <ygardi@xxxxxxxxxxxxxx>
---
drivers/scsi/ufs/ufs-qcom.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index de9cfb0..4cdffa4 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -694,6 +694,16 @@ out:
return ret;
}
+static u32 ufs_qcom_get_ufs_hci_version(struct ufs_hba *hba)
+{
+ struct ufs_qcom_host *host = hba->priv;
+
+ if (host->hw_ver.major == 0x1)
+ return UFSHCI_VERSION_11;
+ else
+ return UFSHCI_VERSION_20;
+}
+
/**
* ufs_qcom_advertise_quirks - advertise the known QCOM UFS controller quirks
* @hba: host controller instance
@@ -718,6 +728,7 @@ static void ufs_qcom_advertise_quirks(struct ufs_hba *hba)
if (host->hw_ver.major >= 0x2) {
hba->quirks |= UFSHCD_QUIRK_BROKEN_LCC;
+ hba->quirks |= UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION;
if (!ufs_qcom_cap_qunipro(host))
/* Legacy UniPro mode still need following quirks */
@@ -1026,6 +1037,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
.name = "qcom",
.init = ufs_qcom_init,
.exit = ufs_qcom_exit,
+ .get_ufs_hci_version = ufs_qcom_get_ufs_hci_version,
.clk_scale_notify = ufs_qcom_clk_scale_notify,
.setup_clocks = ufs_qcom_setup_clocks,
.hce_enable_notify = ufs_qcom_hce_enable_notify,
--
1.8.5.2
--
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