[PATCH 2/3] drm: mxsfb: add alpha plane support on i.MX6UL/i.MX6ULL

[Sébastien Szymanski]

The eLCDIF controller on i.MX6UL/i.MX6ULL supports the alpha plane too.
Enable it on these SoCs.

Signed-off-by: Sébastien Szymanski <sebastien.szymanski@xxxxxxxxxxxx>
---
While testing, I have noticed that the alpha plane works but
sometimes the framebuffer is shiftted to the right.
I tested with the following modetest command:

modetest -M mxsfb-drm -s 37@35:800x480 -P 33@35:800x480@AR24 -F smpte,plain

 drivers/gpu/drm/mxsfb/mxsfb_drv.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index 6faf17b6408d..95c35333c2d1 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -306,6 +306,7 @@ static const struct drm_driver mxsfb_driver = {
 static const struct of_device_id mxsfb_dt_ids[] = {
 	{ .compatible = "fsl,imx23-lcdif", .data = &mxsfb_devdata[MXSFB_V3], },
 	{ .compatible = "fsl,imx28-lcdif", .data = &mxsfb_devdata[MXSFB_V4], },
+	{ .compatible = "fsl,imx6ul-lcdif", .data = &mxsfb_devdata[MXSFB_V6], },
 	{ .compatible = "fsl,imx6sx-lcdif", .data = &mxsfb_devdata[MXSFB_V6], },
 	{ /* sentinel */ }
 };
-- 
2.26.2