drm/exynos/hdmi: add 85.5MHz pixel clock for v14 HDMI PHY

Configuration details from Samsung. This enables 1366x768@60Hz,
which also needs the 256px timing hack to work around a mixer
limitation.

Signed-off-by: Daniel Drake <[e-mail]>
Signed-off-by: Tobias Jakobi <[e-mail]>
[[e-mail]: rebased onto proposed patchset]
Signed-off-by: Andrzej Hajda <[e-mail]>
Signed-off-by: Inki Dae <[e-mail]>

drivers/gpu/drm/exynos/exynos_hdmi.c

···
 		},
 	},
 	{
+		.pixel_clock = 85500000,
+		.conf = {
+			0x01, 0xd1, 0x24, 0x11, 0x40, 0x40, 0xd0, 0x08,
+			0x84, 0xa0, 0xd6, 0xd8, 0x45, 0xa0, 0xac, 0x80,
+			0x08, 0x80, 0x11, 0x04, 0x02, 0x22, 0x44, 0x86,
+			0x54, 0x90, 0x24, 0x01, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
 		.pixel_clock = 106500000,
 		.conf = {
 			0x01, 0xd1, 0x2c, 0x12, 0x40, 0x0c, 0x09, 0x08,
···
 	 * first line is distorted.
 	 */
 	if ((m->vdisplay != am->vdisplay) &&
-	    (m->hdisplay == 1280 || m->hdisplay == 1024))
+	    (m->hdisplay == 1280 || m->hdisplay == 1024 || m->hdisplay == 1366))
 		hquirk = 258;
 
 	hdmi_reg_writev(hdata, HDMI_H_BLANK_0, 2, m->htotal - m->hdisplay);

drivers/gpu/drm/exynos/exynos_mixer.c

···
 	    (w >= 1664 && w <= 1920 && h >= 936 && h <= 1080))
 		return MODE_OK;
 
-	if ((w == 1024 && h == 768) || (w == 1280 && h == 1024))
+	if ((w == 1024 && h == 768) ||
+	    (w == 1366 && h == 768) ||
+	    (w == 1280 && h == 1024))
 		return MODE_OK;
 
 	return MODE_BAD;