[PATCH 2/2] sunxi: video: Support DE_LOW and PIXDATA_NEGEDGE display flags
John Watts
contact at jookia.org
Fri Jun 14 14:28:46 CEST 2024
Implement these by inverting the DE and PCLK polarities.
Signed-off-by: John Watts <contact at jookia.org>
---
arch/arm/include/asm/arch-sunxi/lcdc.h | 2 ++
drivers/video/sunxi/lcdc.c | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/arch/arm/include/asm/arch-sunxi/lcdc.h b/arch/arm/include/asm/arch-sunxi/lcdc.h
index 90216bcfd5..580cd6af20 100644
--- a/arch/arm/include/asm/arch-sunxi/lcdc.h
+++ b/arch/arm/include/asm/arch-sunxi/lcdc.h
@@ -64,6 +64,8 @@ struct sunxi_lcdc_reg {
#define SUNXI_LCDC_Y(y) (((y) - 1) << 0)
#define SUNXI_LCDC_TCON_VSYNC_MASK (1 << 24)
#define SUNXI_LCDC_TCON_HSYNC_MASK (1 << 25)
+#define SUNXI_LCDC_TCON_PIXDATA_MASK (1 << 26)
+#define SUNXI_LCDC_TCON_DE_MASK (1 << 27)
#define SUNXI_LCDC_CTRL_IO_MAP_MASK (1 << 0)
#define SUNXI_LCDC_CTRL_IO_MAP_TCON0 (0 << 0)
#define SUNXI_LCDC_CTRL_IO_MAP_TCON1 (1 << 0)
diff --git a/drivers/video/sunxi/lcdc.c b/drivers/video/sunxi/lcdc.c
index 4fcea6050a..169da7654e 100644
--- a/drivers/video/sunxi/lcdc.c
+++ b/drivers/video/sunxi/lcdc.c
@@ -137,6 +137,10 @@ void lcdc_tcon0_mode_set(struct sunxi_lcdc_reg * const lcdc,
val |= SUNXI_LCDC_TCON_HSYNC_MASK;
if (mode->flags & DISPLAY_FLAGS_VSYNC_HIGH)
val |= SUNXI_LCDC_TCON_VSYNC_MASK;
+ if (mode->flags & DISPLAY_FLAGS_DE_LOW)
+ val |= SUNXI_LCDC_TCON_DE_MASK;
+ if (mode->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE)
+ val |= SUNXI_LCDC_TCON_PIXDATA_MASK;
#ifdef CONFIG_VIDEO_VGA_VIA_LCD_FORCE_SYNC_ACTIVE_HIGH
if (for_ext_vga_dac)
--
2.45.2
More information about the U-Boot
mailing list