linux-kernel - [PATCH 4/5] drm/panel: simple: Tweak timings of sharp,ls020b1dd01d for perfect 60Hz

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Date:   Tue, 11 Aug 2020 02:22:39 +0200
From:   Paul Cercueil <paul@...pouillou.net>
To:     Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        od@...c.me, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Paul Cercueil <paul@...pouillou.net>
Subject: [PATCH 4/5] drm/panel: simple: Tweak timings of sharp,ls020b1dd01d for perfect 60Hz

Modify the video mode in order to obtain a perfect 60.00 Hz frame rate
using a 3 MHz pixel clock.

Signed-off-by: Paul Cercueil <paul@...pouillou.net>
---
 drivers/gpu/drm/panel/panel-simple.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 60052976e616..4aee7eca6ded 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -3384,15 +3384,15 @@ static const struct panel_desc sharp_lq123p1jx31 = {
 
 static const struct drm_display_mode sharp_ls020b1dd01d_modes[] = {
 	{ /* 60 Hz */
-		.clock = 4200,
+		.clock = 3000,
 		.hdisplay = 240,
-		.hsync_start = 240 + 66,
-		.hsync_end = 240 + 66 + 1,
-		.htotal = 240 + 66 + 1 + 1,
+		.hsync_start = 240 + 8,
+		.hsync_end = 240 + 8 + 1,
+		.htotal = 240 + 8 + 1 + 1,
 		.vdisplay = 160,
-		.vsync_start = 160 + 52,
-		.vsync_end = 160 + 52 + 10,
-		.vtotal = 160 + 52 + 10 + 6,
+		.vsync_start = 160 + 24,
+		.vsync_end = 160 + 24 + 10,
+		.vtotal = 160 + 24 + 10 + 6,
 		.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
 	},
 };
-- 
2.28.0