diff options
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_dsi_phy_v3.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/video/fbdev/msm/mdss_dsi_phy_v3.c b/drivers/video/fbdev/msm/mdss_dsi_phy_v3.c index 9033d1b9e643..7d201a574a00 100644 --- a/drivers/video/fbdev/msm/mdss_dsi_phy_v3.c +++ b/drivers/video/fbdev/msm/mdss_dsi_phy_v3.c @@ -284,6 +284,12 @@ int mdss_dsi_phy_v3_ulps_config(struct mdss_dsi_ctrl_pdata *ctrl, bool enable) active_lanes); usleep_range(100, 110); + /* Disable LPRX and CDRX */ + mdss_dsi_phy_v3_config_lpcdrx(ctrl, false); + + /* Disable lane LDOs */ + DSI_PHY_W32(ctrl->phy_io.base, CMN_VREG_CTRL, 0x19); + /* Check to make sure that all active data lanes are in ULPS */ lane_status = DSI_PHY_R32(ctrl->phy_io.base, CMN_LANE_STATUS0); if (lane_status & active_lanes) { @@ -293,6 +299,12 @@ int mdss_dsi_phy_v3_ulps_config(struct mdss_dsi_ctrl_pdata *ctrl, bool enable) goto error; } } else { + /* Enable lane LDOs */ + DSI_PHY_W32(ctrl->phy_io.base, CMN_VREG_CTRL, 0x59); + + /* Enable LPRX and CDRX */ + mdss_dsi_phy_v3_config_lpcdrx(ctrl, true); + /* * ULPS Exit Request * Hardware requirement is to wait for at least 1ms @@ -301,6 +313,12 @@ int mdss_dsi_phy_v3_ulps_config(struct mdss_dsi_ctrl_pdata *ctrl, bool enable) active_lanes); usleep_range(1000, 1010); + /* Clear ULPS request flags on all lanes */ + DSI_PHY_W32(ctrl->phy_io.base, CMN_DSI_LANE_CTRL1, 0); + + /* Clear ULPS exit flags on all lanes */ + DSI_PHY_W32(ctrl->phy_io.base, CMN_DSI_LANE_CTRL2, 0); + /* * Sometimes when exiting ULPS, it is possible that some DSI * lanes are not in the stop state which could lead to DSI @@ -311,8 +329,6 @@ int mdss_dsi_phy_v3_ulps_config(struct mdss_dsi_ctrl_pdata *ctrl, bool enable) active_lanes); DSI_PHY_W32(ctrl->phy_io.base, CMN_DSI_LANE_CTRL3, 0); - DSI_PHY_W32(ctrl->phy_io.base, CMN_DSI_LANE_CTRL2, 0); - DSI_PHY_W32(ctrl->phy_io.base, CMN_DSI_LANE_CTRL1, 0); lane_status = DSI_PHY_R32(ctrl->phy_io.base, CMN_LANE_STATUS0); } |