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msm: mdss: fix overflow when reading pixel clock

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Fix pixel clock value overflow when reading from the
dtsi. This fixes the frame rate calculations for 120 fps
panels; wrong frame rates were leading to low bandwidth
and mdp clock calculations, increasing the transfer
times and reducing the fps.

Change-Id: Ia41aae433f89e8970318224562b00cf0cb56767b
Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>
This commit is contained in:
Ingrid Gallardo 2016-01-21 18:28:57 -08:00 • committed by David Keitel
parent 64ee8f9ae5
commit 8d4fa5ef98
1 changed files with 3 additions and 1 deletions
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4
drivers/video/fbdev/msm/mdss_dsi_panel.c
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@ -2022,9 +2022,11 @@ static int mdss_dsi_panel_timing_from_dt(struct device_node *np,
rc = of_property_read_u32(np, "qcom,mdss-dsi-panel-framerate", &tmp);
pt->timing.frame_rate = !rc ? tmp : DEFAULT_FRAME_RATE;
rc = of_property_read_u64(np, "qcom,mdss-dsi-panel-clockrate", &tmp64);
if (rc == -EOVERFLOW)
if (rc == -EOVERFLOW) {
tmp64 = 0;
rc = of_property_read_u32(np,
"qcom,mdss-dsi-panel-clockrate", (u32 *)&tmp64);
}
pt->timing.clk_rate = !rc ? tmp64 : 0;
data = of_get_property(np, "qcom,mdss-dsi-panel-timings", &len);