evie/android_kernel_oneplus_msm8998
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msm: mdss: reset DSI LANE control register during initialization

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Sometimes during suspend due to some shared regulator, if DSI PHY
was not turned off properly, then DSI LANE control register might
store some stale values during resume and this might cause side
effects on panel during initialization sequence. So reset the DSI
lane control register during DSI host initialization.

Change-Id: Ib87281cc1346d88a83e7e26f7dc4951a0798276b
Signed-off-by: Sandeep Panda <spanda@codeaurora.org>
This commit is contained in:
Sandeep Panda 2015-08-18 11:08:15 +05:30 • committed by David Keitel
parent 6f6cd7047d
commit bed2a7d69d
1 changed files with 4 additions and 0 deletions
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4
drivers/video/fbdev/msm/mdss_dsi_host.c
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@ -403,6 +403,10 @@ void mdss_dsi_host_init(struct mdss_panel_data *pdata)
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x11c,
0x23f); /* DSI_CLK_CTRL */
/* Reset DSI_LANE_CTRL */
if (!ctrl_pdata->mmss_clamp)
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x00ac, 0x0);
dsi_ctrl |= BIT(0); /* enable dsi */
MIPI_OUTP((ctrl_pdata->ctrl_base) + 0x0004, dsi_ctrl);