OMAP: DSS2: HDMI: use default dividers

Use default regn and regm2 dividers in the hdmi driver if the board file
does not define them.

Cc: Mythri P K <mythripk@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 13 insertions, 2 deletions

diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c
index 8cef940b5010..52731b5e10f0 100644
--- a/drivers/video/omap2/dss/hdmi.c
+++ b/drivers/video/omap2/dss/hdmi.c
@@ -60,6 +60,9 @@
 
 #define OMAP_HDMI_TIMINGS_NB                    34
 
+#define HDMI_DEFAULT_REGN 15
+#define HDMI_DEFAULT_REGM2 1
+
 static struct {
         struct mutex lock;
         struct omap_display_platform_data *pdata;
@@ -418,7 +421,11 @@ static void hdmi_compute_pll(struct omap_dss_device *dssdev, int phy,
          * Input clock is predivided by N + 1
          * out put of which is reference clk
          */
-        pi->regn = dssdev->clocks.hdmi.regn;
+        if (dssdev->clocks.hdmi.regn == 0)
+                pi->regn = HDMI_DEFAULT_REGN;
+        else
+                pi->regn = dssdev->clocks.hdmi.regn;
+
         refclk = clkin / (pi->regn + 1);
 
         /*
@@ -426,7 +433,11 @@ static void hdmi_compute_pll(struct omap_dss_device *dssdev, int phy,
          * Multiplying by 100 to avoid fractional part removal
          */
         pi->regm = (phy * 100 / (refclk)) / 100;
-        pi->regm2 = dssdev->clocks.hdmi.regm2;
+
+        if (dssdev->clocks.hdmi.regm2 == 0)
+                pi->regm2 = HDMI_DEFAULT_REGM2;
+        else
+                pi->regm2 = dssdev->clocks.hdmi.regm2;
 
         /*
          * fractional multiplier is remainder of the difference between