From: Daniel Drake <drake@endlessm.com>
Date: Fri, 29 Sep 2017 12:05:42 +0200
Subject: drm/exynos/hdmi: add 85.5MHz pixel clock for v14 HDMI PHY
Git-commit: ae58c03e0ee13e37f8f56c0158d55f504ad889d2
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

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 <drake@endlessm.com>
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
[a.hajda@samsung.com: rebased onto proposed patchset]
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/exynos/exynos_hdmi.c  |   11 ++++++++++-
 drivers/gpu/drm/exynos/exynos_mixer.c |    4 +++-
 2 files changed, 13 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -297,6 +297,15 @@ static const struct hdmiphy_config hdmip
 		},
 	},
 	{
+		.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,
@@ -1257,7 +1266,7 @@ static void hdmi_v14_mode_apply(struct h
 	 * 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);
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -1015,7 +1015,9 @@ static int mixer_mode_valid(struct exyno
 	    (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;