scsi: ufs: host: mediatek: Support new features for MT6991

Add support for the MT6991 platform by enabling MRTT settings and random
performance improvements. These enhancements aim to optimize performance
and efficiency on the MT6991 hardware.

Enable multi-Round Trip Time (MRTT) for improved data handling.  Enable
random performance improvement features to boost overall system
responsiveness.

Signed-off-by: Naomi Chu <naomi.chu@mediatek.com>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Acked-by: Chun-Hung Wu <chun-hung.wu@mediatek.com>
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Link: https://patch.msgid.link/20250924094527.2992256-9-peter.wang@mediatek.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
index 8498e95e263afb0336d065e6bb425a07d8f8ab8f..eee56f5aed30ee9c63895224e3158fdbb4bc28af 100644 (file)
--- a/drivers/ufs/host/ufs-mediatek.c
+++ b/drivers/ufs/host/ufs-mediatek.c
@@ -289,6 +289,12 @@ static int ufs_mtk_hce_enable_notify(struct ufs_hba *hba,
                                0x453000, REG_UFS_MMIO_OPT_CTRL_0);
                }
 
+               if (host->ip_ver >= IP_VER_MT6991_A0) {
+                       /* Enable multi-rtt */
+                       ufshcd_rmwl(hba, MRTT_EN, MRTT_EN, REG_UFS_MMIO_OPT_CTRL_0);
+                       /* Enable random performance improvement */
+                       ufshcd_rmwl(hba, RDN_PFM_IMPV_DIS, 0, REG_UFS_MMIO_OPT_CTRL_0);
+               }
        }
 
        return 0;

diff --git a/drivers/ufs/host/ufs-mediatek.h b/drivers/ufs/host/ufs-mediatek.h
index f96fd032371d9c63a3dd319f28c462fc9edbe77e..9747277f11e8917b38524d0c4a3069fc38bd144a 100644 (file)
--- a/drivers/ufs/host/ufs-mediatek.h
+++ b/drivers/ufs/host/ufs-mediatek.h
@@ -20,6 +20,9 @@
 #define MCQ_MULTI_INTR_EN       BIT(2)
 #define MCQ_CMB_INTR_EN         BIT(3)
 #define MCQ_AH8                 BIT(4)
+#define MON_EN                  BIT(5)
+#define MRTT_EN                 BIT(25)
+#define RDN_PFM_IMPV_DIS        BIT(28)
 
 #define MCQ_INTR_EN_MSK         (MCQ_MULTI_INTR_EN | MCQ_CMB_INTR_EN)