Hi,
This is a command mode panel and the the msm/mdp5 driver uses the
vrefresh field for the actual refresh rate, while the dotclock field is
used for the DSI clocks. The dotclock needed to be a bit higher than
necessary otherwise the panel would not work.
If you want to get rid of the separate clock/vrefresh fields there would
need to be some changes to msm driver.
(note I hadn't made the patch with upstreaming in mind, the 150000 value
is likely not optimal, just something that worked, this is something
that should have been checked with the downstream driver)
-Jonathan
On 3/2/20 3:34 PM, Ville Syrjala wrote:
From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
The currently listed dotclock disagrees with the currently
listed vrefresh rate. Change the dotclock to match the vrefresh.
Someone tell me which (if either) of the dotclock or vreresh is
correct?
Cc: Jonathan Marek <jonathan@xxxxxxxx>
Cc: Brian Masney <masneyb@xxxxxxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/panel/panel-simple.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index b24fdf239440..f958d8dfd760 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -3996,7 +3996,7 @@ static const struct panel_desc_dsi panasonic_vvx10f004b00 = {
};
static const struct drm_display_mode lg_acx467akm_7_mode = {
- .clock = 150000,
+ .clock = 125498,
.hdisplay = 1080,
.hsync_start = 1080 + 2,
.hsync_end = 1080 + 2 + 2,
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