[PATCH v2] drm/panel: Fix ARM Versatile panel clocks

Linus Walleij linus.walleij at linaro.org
Sun Feb 11 10:38:40 UTC 2018


These clocks are in kHz not in Hz, oops. Fix it so my
new bandwidth calculations patch starts working with these
panels.

Cc: Eric Anholt <eric at anholt.net>
Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
---
ChangeLog v1->v2:
- The Epson clock was still wrong, off by one order of
  magnitude. It is now fixed. The only source of the actual
  frequency to use is the old fbdev driver, as there is no
  datasheet for this Epson panel that I can find, and it is
  set to 62500 kHz.
---
 drivers/gpu/drm/panel/panel-arm-versatile.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-arm-versatile.c b/drivers/gpu/drm/panel/panel-arm-versatile.c
index 3930b4925b15..b428c4678106 100644
--- a/drivers/gpu/drm/panel/panel-arm-versatile.c
+++ b/drivers/gpu/drm/panel/panel-arm-versatile.c
@@ -132,7 +132,7 @@ static const struct versatile_panel_type versatile_panels[] = {
 		.width_mm = 79,
 		.height_mm = 54,
 		.mode = {
-			.clock = 10000000,
+			.clock = 10000,
 			.hdisplay = 320,
 			.hsync_start = 320 + 6,
 			.hsync_end = 320 + 6 + 6,
@@ -156,7 +156,7 @@ static const struct versatile_panel_type versatile_panels[] = {
 		.width_mm = 171,
 		.height_mm = 130,
 		.mode = {
-			.clock = 25000000,
+			.clock = 25000,
 			.hdisplay = 640,
 			.hsync_start = 640 + 24,
 			.hsync_end = 640 + 24 + 96,
@@ -179,7 +179,7 @@ static const struct versatile_panel_type versatile_panels[] = {
 		.width_mm = 34,
 		.height_mm = 45,
 		.mode = {
-			.clock = 625000000,
+			.clock = 62500,
 			.hdisplay = 176,
 			.hsync_start = 176 + 2,
 			.hsync_end = 176 + 2 + 3,
@@ -203,7 +203,7 @@ static const struct versatile_panel_type versatile_panels[] = {
 		.width_mm = 37,
 		.height_mm = 50,
 		.mode = {
-			.clock = 5400000,
+			.clock = 5400,
 			.hdisplay = 240,
 			.hsync_start = 240 + 10,
 			.hsync_end = 240 + 10 + 10,
-- 
2.14.3



More information about the dri-devel mailing list