[PATCH 5.10 142/663] drm/panel: mantix: Tweak init sequence
From: Greg Kroah-Hartman
Date: Mon Mar 01 2021 - 20:20:20 EST
From: Guido Günther <agx@xxxxxxxxxxx>
[ Upstream commit dd396dbc4d7811c1567cc43faa4b9ad68094c44d ]
We've seen some (non permanent) burn in and bad white balance
on some of the panels. Adding this bit from a vendor supplied
sequence fixes it.
Fixes: 72967d5616d3 ("drm/panel: Add panel driver for the Mantix MLAF057WE51-X DSI panel")
Signed-off-by: Guido Günther <agx@xxxxxxxxxxx>
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Reviewed-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/8451831b60d5ecb73a156613d98218a31bd55680.1605688147.git.agx@xxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c b/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
index 0c5f22e95c2db..624d17b96a693 100644
--- a/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
+++ b/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
@@ -22,6 +22,7 @@
/* Manufacturer specific Commands send via DSI */
#define MANTIX_CMD_OTP_STOP_RELOAD_MIPI 0x41
#define MANTIX_CMD_INT_CANCEL 0x4C
+#define MANTIX_CMD_SPI_FINISH 0x90
struct mantix {
struct device *dev;
@@ -66,6 +67,10 @@ static int mantix_init_sequence(struct mantix *ctx)
dsi_generic_write_seq(dsi, 0x80, 0x64, 0x00, 0x64, 0x00, 0x00);
msleep(20);
+ dsi_generic_write_seq(dsi, MANTIX_CMD_SPI_FINISH, 0xA5);
+ dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x00, 0x2F);
+ msleep(20);
+
dev_dbg(dev, "Panel init sequence done\n");
return 0;
}
--
2.27.0