video: mxsfb: enable setting ENABLE negative polarity

ENABLE signal can now be flipped by writing its bitmask on vdctrl0
register.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>

diff --git a/drivers/video/mxsfb.c b/drivers/video/mxsfb.c
index 648e1c22fefd2fac01317c6a211e2633f231935e..8a5a61c9fb7c88043d6868414c92dccf26f62b8c 100644 (file)
--- a/drivers/video/mxsfb.c
+++ b/drivers/video/mxsfb.c
@@ -131,6 +131,9 @@ static void mxs_lcd_init(struct udevice *dev, u32 fb_addr,
                vdctrl0 |= LCDIF_VDCTRL0_VSYNC_POL;
        if(flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE)
                vdctrl0 |= LCDIF_VDCTRL0_DOTCLK_POL;
                vdctrl0 |= LCDIF_VDCTRL0_VSYNC_POL;
        if(flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE)
                vdctrl0 |= LCDIF_VDCTRL0_DOTCLK_POL;

+       if(flags & DISPLAY_FLAGS_DE_HIGH)
+               vdctrl0 |= LCDIF_VDCTRL0_ENABLE_POL;
+

        writel(vdctrl0, &regs->hw_lcdif_vdctrl0);
        writel(timings->vback_porch.typ + timings->vfront_porch.typ +
                timings->vsync_len.typ + timings->vactive.typ,
        writel(vdctrl0, &regs->hw_lcdif_vdctrl0);
        writel(timings->vback_porch.typ + timings->vfront_porch.typ +
                timings->vsync_len.typ + timings->vactive.typ,