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authorXiang Chen <chenxiang66@hisilicon.com>2019-02-28 22:51:02 +0800
committerMartin K. Petersen <martin.petersen@oracle.com>2019-03-06 19:26:46 -0500
commitcf9efd5d92365696580a45e0351208eef0ea1562 (patch)
tree406ad7d342e5fb386b71605540e7e4f40f4128a1 /drivers/scsi
parent57dbb2b218eb6b4faa39025e3e5974742a4e8986 (diff)
downloadlinux-cf9efd5d92365696580a45e0351208eef0ea1562.tar.bz2
scsi: hisi_sas: Change SERDES_CFG init value to increase reliability of HiLink
With default value of register SERDES_CFG, the link is not stable for some special disks when running IO. According to HW guys' suggestion, need to make the bit10~19 value of register SERDES_CFG the max value to increase the reliability of the HiLink. Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by: Yupeng Zhou <zhouyupeng1@huawei.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/hisi_sas/hisi_sas_v3_hw.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 720721196b12..e2f2c04355b9 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -129,6 +129,7 @@
#define PHY_CTRL_RESET_MSK (0x1 << PHY_CTRL_RESET_OFF)
#define CMD_HDR_PIR_OFF 8
#define CMD_HDR_PIR_MSK (0x1 << CMD_HDR_PIR_OFF)
+#define SERDES_CFG (PORT_BASE + 0x1c)
#define SL_CFG (PORT_BASE + 0x84)
#define AIP_LIMIT (PORT_BASE + 0x90)
#define SL_CONTROL (PORT_BASE + 0x94)
@@ -525,6 +526,7 @@ static void init_reg_v3_hw(struct hisi_hba *hisi_hba)
}
hisi_sas_phy_write32(hisi_hba, i, PROG_PHY_LINK_RATE,
prog_phy_link_rate);
+ hisi_sas_phy_write32(hisi_hba, i, SERDES_CFG, 0xffc00);
hisi_sas_phy_write32(hisi_hba, i, SAS_RX_TRAIN_TIMER, 0x13e80);
hisi_sas_phy_write32(hisi_hba, i, CHL_INT0, 0xffffffff);
hisi_sas_phy_write32(hisi_hba, i, CHL_INT1, 0xffffffff);