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video: mxsfb: enable setting VSYNC negative polarity

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VSYNC 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>
This commit is contained in:
Giulio Benetti 2020-04-08 17:10:17 +02:00 committed by Stefano Babic
parent e121e00352
commit 606668af96
1 changed files with 2 additions and 0 deletions
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2
drivers/video/mxsfb.c
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@ -127,6 +127,8 @@ static void mxs_lcd_init(struct udevice *dev, u32 fb_addr,
if(flags & DISPLAY_FLAGS_HSYNC_HIGH)
vdctrl0 |= LCDIF_VDCTRL0_HSYNC_POL;
if(flags & DISPLAY_FLAGS_VSYNC_HIGH)
vdctrl0 |= LCDIF_VDCTRL0_VSYNC_POL;
writel(vdctrl0, &regs->hw_lcdif_vdctrl0);
writel(timings->vback_porch.typ + timings->vfront_porch.typ +
timings->vsync_len.typ + timings->vactive.typ,