Patch "scsi: ufs: ufs-qcom: Clear qunipro_g4_sel for HW version major 5" has been added to the 5.10-stable tree

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This is a note to let you know that I've just added the patch titled

    scsi: ufs: ufs-qcom: Clear qunipro_g4_sel for HW version major 5

to the 5.10-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     scsi-ufs-ufs-qcom-clear-qunipro_g4_sel-for-hw-versio.patch
and it can be found in the queue-5.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 3de72f6ae1fe97d59a6984b46bb438ce7684e8e3
Author: Abel Vesa <abel.vesa@xxxxxxxxxx>
Date:   Thu Jan 19 17:14:05 2023 +0200

    scsi: ufs: ufs-qcom: Clear qunipro_g4_sel for HW version major 5
    
    [ Upstream commit 9c02aa24bf404a39ec509d9f50539056b9b128f7 ]
    
    On SM8550, depending on the Qunipro, we can run with G5 or G4.  For now,
    when the major version is 5 or above, we go with G5.  Therefore, we need to
    specifically tell UFS HC that.
    
    Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxx>
    Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
    Stable-dep-of: 823150ecf04f ("scsi: ufs: qcom: Perform read back after writing unipro mode")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index 45d21cb80289d..ef8d721022da5 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -242,6 +242,10 @@ static void ufs_qcom_select_unipro_mode(struct ufs_qcom_host *host)
 	ufshcd_rmwl(host->hba, QUNIPRO_SEL,
 		   ufs_qcom_cap_qunipro(host) ? QUNIPRO_SEL : 0,
 		   REG_UFS_CFG1);
+
+	if (host->hw_ver.major == 0x05)
+		ufshcd_rmwl(host->hba, QUNIPRO_G4_SEL, 0, REG_UFS_CFG0);
+
 	/* make sure above configuration is applied before we return */
 	mb();
 }
@@ -515,9 +519,9 @@ static int ufs_qcom_cfg_timers(struct ufs_hba *hba, u32 gear,
 		mb();
 	}
 
-	if (update_link_startup_timer) {
+	if (update_link_startup_timer && host->hw_ver.major != 0x5) {
 		ufshcd_writel(hba, ((core_clk_rate / MSEC_PER_SEC) * 100),
-			      REG_UFS_PA_LINK_STARTUP_TIMER);
+			      REG_UFS_CFG0);
 		/*
 		 * make sure that this configuration is applied before
 		 * we return
diff --git a/drivers/scsi/ufs/ufs-qcom.h b/drivers/scsi/ufs/ufs-qcom.h
index 70bee1d1f1139..742f752d01d61 100644
--- a/drivers/scsi/ufs/ufs-qcom.h
+++ b/drivers/scsi/ufs/ufs-qcom.h
@@ -48,7 +48,8 @@ enum {
 	REG_UFS_PA_ERR_CODE                 = 0xCC,
 	/* On older UFS revisions, this register is called "RETRY_TIMER_REG" */
 	REG_UFS_PARAM0                      = 0xD0,
-	REG_UFS_PA_LINK_STARTUP_TIMER       = 0xD8,
+	/* On older UFS revisions, this register is called "REG_UFS_PA_LINK_STARTUP_TIMER" */
+	REG_UFS_CFG0                        = 0xD8,
 	REG_UFS_CFG1                        = 0xDC,
 	REG_UFS_CFG2                        = 0xE0,
 	REG_UFS_HW_VERSION                  = 0xE4,
@@ -86,6 +87,9 @@ enum {
 #define UFS_CNTLR_2_x_x_VEN_REGS_OFFSET(x)	(0x000 + x)
 #define UFS_CNTLR_3_x_x_VEN_REGS_OFFSET(x)	(0x400 + x)
 
+/* bit definitions for REG_UFS_CFG0 register */
+#define QUNIPRO_G4_SEL		BIT(5)
+
 /* bit definitions for REG_UFS_CFG1 register */
 #define QUNIPRO_SEL		0x1
 #define UTP_DBG_RAMS_EN		0x20000




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