diff options
| author | Koji Matsuoka <koji.matsuoka.xm@renesas.com> | 2016-04-18 16:31:30 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-30 10:21:48 +0200 |
| commit | 1fb8ff8b92bd1335e036e3187797136348fe0029 (patch) | |
| tree | 1cd88a47a4b092553c0a319009bfde2a9cfe26af | |
| parent | 35fd2b840b6c02da9c0e8a31f52ebb89f51692e2 (diff) | |
drm: rcar-du: Fix display timing controller parameter
commit 9cdced8a39c04cf798ddb2a27cb5952f7d39f633 upstream.
There is a bug in the setting of the DES (Display Enable Signal)
register. This current setting occurs 1 dot left shift. The DES
register should be set minus one value about the specifying value
with H/W specification. This patch corrects it.
Signed-off-by: Koji Matsuoka <koji.matsuoka.xm@renesas.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Thong Ho <thong.ho.px@rvc.renesas.com>
Signed-off-by: Nhan Nguyen <nhan.nguyen.yb@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c index 7316fc7fa0bd..aca26eed93b1 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c @@ -172,7 +172,7 @@ static void rcar_du_crtc_set_display_timing(struct rcar_du_crtc *rcrtc) mode->crtc_vsync_start - 1); rcar_du_crtc_write(rcrtc, VCR, mode->crtc_vtotal - 1); - rcar_du_crtc_write(rcrtc, DESR, mode->htotal - mode->hsync_start); + rcar_du_crtc_write(rcrtc, DESR, mode->htotal - mode->hsync_start - 1); rcar_du_crtc_write(rcrtc, DEWR, mode->hdisplay); } |