On the D1 and T113 the TCON TOP cannot handle setting both DEs to a single output, even if the outputs are disabled. As a workaround assign DE1 to TVE0 by default. A full fix for this would include logic that makes sure both DEs never share the same output. Signed-off-by: John Watts <contact@xxxxxxxxxx> --- drivers/gpu/drm/sun4i/sun8i_tcon_top.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/sun4i/sun8i_tcon_top.c b/drivers/gpu/drm/sun4i/sun8i_tcon_top.c index a1ca3916f42bcc63b9ac7643e788d962ef360ca8..543311ffb1509face3fbfd069ded10933f254b9d 100644 --- a/drivers/gpu/drm/sun4i/sun8i_tcon_top.c +++ b/drivers/gpu/drm/sun4i/sun8i_tcon_top.c @@ -179,7 +179,7 @@ static int sun8i_tcon_top_bind(struct device *dev, struct device *master, * At least on H6, some registers have some bits set by default * which may cause issues. Clear them here. */ - writel(0, regs + TCON_TOP_PORT_SEL_REG); + writel(0x20, regs + TCON_TOP_PORT_SEL_REG); writel(0, regs + TCON_TOP_GATE_SRC_REG); /* --- base-commit: 98f7e32f20d28ec452afb208f9cffc08448a2652 change-id: 20241108-tcon_fix-f0585ac9bae0 Best regards, -- John Watts <contact@xxxxxxxxxx>
