msm: mdss: add support to read force clock lane HS property

This change adds support to read force clock lane to HS
property from panel dt file.

Change-Id: I20c42e0f7914c8fb91c6cb7ea6fd2802359a6be6
Signed-off-by: Sandeep Panda <spanda@codeaurora.org>

Documentation/devicetree/bindings/fb/mdss-dsi-panel.txt

@@ -382,6 +382,7 @@ Optional properties:
 					"vflip" = panel is flipped in vertical direction
 - qcom,panel-ack-disabled: A boolean property to indicate, whether we need to wait for any ACK from the panel
 			   for any commands that we send.
+- qcom,mdss-dsi-force-clock-lane-hs:	Boolean to force dsi clock lanes to HS mode always.
 
 Note, if a given optional qcom,* binding is not present, then the driver will configure
 the default values specified.
@@ -519,5 +520,6 @@ Example:
 						<40 120 128>,
 						<128 240 64>;
 		qcom,mdss-dsi-panel-orientation = "180"
+		qcom,mdss-dsi-force-clock-lane-hs;
 	};
 };

drivers/video/fbdev/msm/mdss_dsi_panel.c

@@ -1732,6 +1732,9 @@ static int mdss_panel_parse_dt(struct device_node *np,
 	mdss_dsi_parse_dcs_cmds(np, &ctrl_pdata->off_cmds,
 		"qcom,mdss-dsi-off-command", "qcom,mdss-dsi-off-command-state");
 
+	pinfo->mipi.force_clk_lane_hs = of_property_read_bool(np,
+		"qcom,mdss-dsi-force-clock-lane-hs");
+
 	rc = mdss_dsi_parse_panel_features(np, ctrl_pdata);
 	if (rc) {
 		pr_err("%s: failed to parse panel features\n", __func__);

drivers/video/fbdev/msm/mdss_panel.h

@@ -294,7 +294,7 @@ struct mipi_panel_info {
 	/* The packet-size should not bet changed */
 	char no_max_pkt_size;
 	/* Clock required during LP commands */
-	char force_clk_lane_hs;
+	bool force_clk_lane_hs;
 
 	char vsync_enable;
 	char hw_vsync_mode;