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| author | Subhash Jadavani <subhashj@codeaurora.org> | 2016-11-21 16:54:24 -0800 |
|---|---|---|
| committer | Subhash Jadavani <subhashj@codeaurora.org> | 2016-11-29 17:02:33 -0800 |
| commit | 8c9cd71933475e31fd96762b42238aa44a8e9fd6 (patch) | |
| tree | b559bfbb021839191568d3f9fac9375e10657d7a /drivers | |
| parent | bde539edca7035e2f1f19c0d93ea02356b38ed48 (diff) | |
phy: qcom-ufs-qmp-v3: increase the minimum time in hibernate
Some UFS devices violate T-HIBERN8_ENTER_TX time when moving Device
TX (Host RX) lane-1 from SLEEP to HIBERN8 at the end of burst.
M-PHY specification defines max value of 1000 ns for
T-HIBERN8_ENTER_TX but these devices drive DIF-N for 3432 ns. This can
cause the broken link situation after link starup.
This change fixes above issue by increasing host PHY's RX_MIN_HIBERN8_TIME
to 8us (we are giving some additional margin though device needs 3.432us).
Change-Id: I55cb0b718e2e429c0378d842d85a02ace44bf2ce
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/phy/phy-qcom-ufs-qmp-v3.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/phy/phy-qcom-ufs-qmp-v3.h b/drivers/phy/phy-qcom-ufs-qmp-v3.h index d5e49c281278..757ed7464e44 100644 --- a/drivers/phy/phy-qcom-ufs-qmp-v3.h +++ b/drivers/phy/phy-qcom-ufs-qmp-v3.h @@ -141,6 +141,7 @@ #define UFS_PHY_TX_SMALL_AMP_DRV_LVL PHY_OFF(0x34) #define UFS_PHY_LINECFG_DISABLE PHY_OFF(0x130) #define UFS_PHY_RX_SYM_RESYNC_CTRL PHY_OFF(0x134) +#define UFS_PHY_RX_MIN_HIBERN8_TIME PHY_OFF(0x138) #define UFS_PHY_RX_SIGDET_CTRL1 PHY_OFF(0x13C) #define UFS_PHY_RX_SIGDET_CTRL2 PHY_OFF(0x140) #define UFS_PHY_RX_PWM_GEAR_BAND PHY_OFF(0x14C) @@ -264,6 +265,7 @@ static struct ufs_qcom_phy_calibration phy_cal_table_rate_A_3_0_0[] = { UFS_QCOM_PHY_CAL_ENTRY(UFS_PHY_TX_LARGE_AMP_DRV_LVL, 0x0A), UFS_QCOM_PHY_CAL_ENTRY(UFS_PHY_TX_SMALL_AMP_DRV_LVL, 0x02), UFS_QCOM_PHY_CAL_ENTRY(UFS_PHY_RX_SYM_RESYNC_CTRL, 0x03), + UFS_QCOM_PHY_CAL_ENTRY(UFS_PHY_RX_MIN_HIBERN8_TIME, 0x9A), /* 8 us */ }; static struct ufs_qcom_phy_calibration phy_cal_table_rate_A_3_1_0[] = { @@ -343,6 +345,7 @@ static struct ufs_qcom_phy_calibration phy_cal_table_rate_A_3_1_0[] = { UFS_QCOM_PHY_CAL_ENTRY(UFS_PHY_RX_SYM_RESYNC_CTRL, 0x03), UFS_QCOM_PHY_CAL_ENTRY(UFS_PHY_TX_MID_TERM_CTRL1, 0x43), UFS_QCOM_PHY_CAL_ENTRY(UFS_PHY_RX_SIGDET_CTRL1, 0x0F), + UFS_QCOM_PHY_CAL_ENTRY(UFS_PHY_RX_MIN_HIBERN8_TIME, 0x9A), /* 8 us */ }; static struct ufs_qcom_phy_calibration phy_cal_table_rate_B[] = { |