drm: bridge: dw-hdmi: fix tmds clk in status show

According to HDMI 2.0 chapter 6.1, for TMDS character Rates
avove 340Mcsc, the TMDS Clock Rate shall be one fourth of
the TMDS Character Rate.

Change-Id: I4cc78aa1a5fbf6cec93e787dde49e482d0b4d342
Signed-off-by: Zheng Yang <zhengyang@rock-chips.com>

Author: Zheng Yang

drivers/gpu/drm/bridge/dw-hdmi.c

@@ -2973,7 +2973,7 @@ static int dw_hdmi_status_show(struct seq_file *s, void *v)
 	struct dw_hdmi *hdmi = s->private;
 	u32 val;
 
-	seq_puts(s, "PHY ");
+	seq_puts(s, "PHY: ");
 	if (!hdmi->phy.enabled) {
 		seq_puts(s, "disabled\n");
 		return 0;
@@ -2983,9 +2983,12 @@ static int dw_hdmi_status_show(struct seq_file *s, void *v)
 		seq_puts(s, "HDMI\n");
 	else
 		seq_puts(s, "DVI\n");
+	if (hdmi->hdmi_data.video_mode.mtmdsclock > 340000000)
+		val = hdmi->hdmi_data.video_mode.mtmdsclock / 4;
+	else
+		val = hdmi->hdmi_data.video_mode.mtmdsclock;
 	seq_printf(s, "Pixel Clk: %uHz\t\tTMDS Clk: %uHz\n",
-		   hdmi->hdmi_data.video_mode.mpixelclock,
-		   hdmi->hdmi_data.video_mode.mtmdsclock);
+		   hdmi->hdmi_data.video_mode.mpixelclock, val);
 	seq_puts(s, "Color Format: ");
 	if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format))
 		seq_puts(s, "RGB");