diff --git a/drivers/video/via/hw.c b/drivers/video/via/hw.c
index dc4c778877ce..980e263f1875 100644
--- a/drivers/video/via/hw.c
+++ b/drivers/video/via/hw.c
@@ -2598,8 +2598,12 @@ int viafb_get_refresh(int hres, int vres, u32 long_refresh)
 			best = &vmode->crtc[i];
 	}
 
-	if (abs(best->refresh_rate - long_refresh) > 3)
-		return 60;
+	if (abs(best->refresh_rate - long_refresh) > 3) {
+		if (hres == 1200 && vres == 900)
+			return 50; /* OLPC DCON only supports 50 Hz */
+		else
+			return 60;
+	}
 
 	return best->refresh_rate;
 }
diff --git a/drivers/video/via/viamode.c b/drivers/video/via/viamode.c
index 8c5bc41ff6a4..260d339b236c 100644
--- a/drivers/video/via/viamode.c
+++ b/drivers/video/via/viamode.c
@@ -606,7 +606,7 @@ static struct crt_mode_table CRTM1200x720[] = {
 /* 1200x900 (DCON) */
 static struct crt_mode_table DCON1200x900[] = {
 	/* r_rate,               hsp,               vsp   */
-	{REFRESH_60, M1200X900_R60_HSP, M1200X900_R60_VSP,
+	{REFRESH_50, M1200X900_R60_HSP, M1200X900_R60_VSP,
 	/* The correct htotal is 1240, but this doesn't raster on VX855. */
 	/* Via suggested changing to a multiple of 16, hence 1264.       */
 	/*  HT,   HA,  HBS, HBE,  HSS, HSE,  VT,  VA, VBS, VBE, VSS, VSE */