gjdwebserver-overlay/sys-kernel/pinephone-sources/files/megi-fix-mipi-dsi-panel-framerate.patch
Gerben Jan Dijkman b248d4ed1b Added
2021-04-17 13:18:07 +02:00

37 lines
1.1 KiB
Diff

From 29533cb13f24e26e7ddbc044597a3020437352e2 Mon Sep 17 00:00:00 2001
From: Ondrej Jirman
Date: Thu, 29 Oct 2020 01:13:49 +0100
Subject: drm/sun4i: Fix mipi-dsi panel framerate being 2/3 of the expected
value
This happens on Pinephone and on Pinetab. Both use MIPI-DSI panels.
On Pinephone framerate is 36.6 instead of expected 55.
On Pinetab the similar 2/3 ratio holds.
Myabe there's a bug in BSP and dclk_div should really be 6 instead of 4.
Signed-off-by: Ondrej Jirman <megous@megous.com>
---
drivers/gpu/drm/sun4i/sun4i_tcon.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index ab06f5e1fc95..1c56b4fb9ac8 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -398,8 +398,8 @@ static void sun4i_tcon0_mode_set_cpu(struct sun4i_tcon *tcon,
u32 block_space, start_delay;
u32 tcon_div;
- tcon->dclk_min_div = SUN6I_DSI_TCON_DIV;
- tcon->dclk_max_div = SUN6I_DSI_TCON_DIV;
+ tcon->dclk_min_div = 6;
+ tcon->dclk_max_div = 6;
sun4i_tcon0_mode_set_common(tcon, mode);
--
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