drm/panel-simple: Fix inverted V/H SYNC for Frida FRD350H54004 panel

The FRD350H54004 panel was marked as having active-high VSYNC and HSYNC signals, which sorts-of worked, but resulted in the picture fading out under certain circumstances. Fix this issue by marking VSYNC and HSYNC signals active-low. v2: Rebase on drm-misc-next Fixes: 7b6bd84 ("drm/panel: simple: Add support for the Frida FRD350H54004 panel") Cc: [email protected] # v5.5 Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Sam Ravnborg <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
fracktal · Jul 16, 2020 · bad20a2 · bad20a2
1 parent 947fcfe
commit bad20a2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
@@ -1763,7 +1763,7 @@ static const struct drm_display_mode frida_frd350h54004_mode = {
 	.vsync_start = 240 + 2,
 	.vsync_end = 240 + 2 + 6,
 	.vtotal = 240 + 2 + 6 + 2,
-	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
+	.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
 };
 
 static const struct panel_desc frida_frd350h54004 = {