diff options
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/fbdev/mxsfb.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/video/fbdev/mxsfb.c b/drivers/video/fbdev/mxsfb.c index 7846f0e8bbbb..79b1dc7f042b 100644 --- a/drivers/video/fbdev/mxsfb.c +++ b/drivers/video/fbdev/mxsfb.c @@ -150,7 +150,7 @@ #define STMLCDIF_24BIT 3 /** pixel data bus to the display is of 24 bit width */ #define MXSFB_SYNC_DATA_ENABLE_HIGH_ACT (1 << 6) -#define MXSFB_SYNC_DOTCLK_FALLING_ACT (1 << 7) /* negtive edge sampling */ +#define MXSFB_SYNC_DOTCLK_FALLING_ACT (1 << 7) /* negative edge sampling */ enum mxsfb_devtype { MXSFB_V3, @@ -788,7 +788,16 @@ static int mxsfb_init_fbinfo_dt(struct mxsfb_info *host, if (vm.flags & DISPLAY_FLAGS_DE_HIGH) host->sync |= MXSFB_SYNC_DATA_ENABLE_HIGH_ACT; - if (vm.flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE) + + /* + * The PIXDATA flags of the display_flags enum are controller + * centric, e.g. NEGEDGE means drive data on negative edge. + * However, the drivers flag is display centric: Sample the + * data on negative (falling) edge. Therefore, check for the + * POSEDGE flag: + * drive on positive edge => sample on negative edge + */ + if (vm.flags & DISPLAY_FLAGS_PIXDATA_POSEDGE) host->sync |= MXSFB_SYNC_DOTCLK_FALLING_ACT; put_display_node: |