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drm/panel: mantix: Tweak init sequence
author
Guido Günther
<agx@sigxcpu.org>
Wed, 18 Nov 2020 08:29:49 +0000
(09:29 +0100)
committer
Guido Günther
<agx@sigxcpu.org>
Tue, 8 Dec 2020 10:05:42 +0000
(11:05 +0100)
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@sigxcpu.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link:
https://patchwork.freedesktop.org/patch/msgid/8451831b60d5ecb73a156613d98218a31bd55680.1605688147.git.agx@sigxcpu.org
drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
patch
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diff --git
a/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
b/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
index
0c5f22e
..
624d17b
100644
(file)
--- 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;
}