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msm: mdss: read DSI CTRL and PHY revision properly

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In the current implementation DSI PHY revision is read once
DSI PHY initialization is complete. But this needs to be done
before initializing PHY, so that correct PHY initialization
sequence can be executed.

Change-Id: I6f0cd59d63d0a8c0a5d47284f2e86e72f37d099f
Signed-off-by: Sandeep Panda <spanda@codeaurora.org>
This commit is contained in:
Sandeep Panda 2015-12-24 08:22:48 +05:30 • committed by David Keitel
parent f472340bf7
commit e8ffd14c5d
2 changed files with 7 additions and 3 deletions
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6
drivers/video/fbdev/msm/mdss_dsi.c
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@ -1304,6 +1304,10 @@ int mdss_dsi_on(struct mdss_panel_data *pdata)
mdss_dsi_clk_ctrl(ctrl_pdata, ctrl_pdata->dsi_clk_handle,
MDSS_DSI_CORE_CLK, MDSS_DSI_CLK_ON);
/* Populate DSI Controller and PHY revision */
mdss_dsi_read_hw_revision(ctrl_pdata);
mdss_dsi_read_phy_revision(ctrl_pdata);
/*
* If ULPS during suspend feature is enabled, then DSI PHY was
* left on during suspend. In this case, we do not need to reset/init
@ -1321,8 +1325,6 @@ int mdss_dsi_on(struct mdss_panel_data *pdata)
mdss_dsi_clk_ctrl(ctrl_pdata, ctrl_pdata->dsi_clk_handle,
MDSS_DSI_LINK_CLK, MDSS_DSI_CLK_ON);
mdss_dsi_sw_reset(ctrl_pdata, true);
mdss_dsi_read_hw_revision(ctrl_pdata);
mdss_dsi_read_phy_revision(ctrl_pdata);
/*
* Issue hardware reset line after enabling the DSI clocks and data

4
drivers/video/fbdev/msm/msm_mdss_io_8974.c
View file

@ -1937,8 +1937,10 @@ int mdss_dsi_post_clkon_cb(void *priv,
pdata = &ctrl->panel_data;
if (clk & MDSS_DSI_CORE_CLK) {
if (!pdata->panel_info.cont_splash_enabled)
if (!pdata->panel_info.cont_splash_enabled) {
mdss_dsi_read_hw_revision(ctrl);
mdss_dsi_read_phy_revision(ctrl);
}
/*
* Phy and controller setup is needed if coming out of idle