diff options
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun8i_tcon_top.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sun4i/sun8i_tcon_top.c b/drivers/gpu/drm/sun4i/sun8i_tcon_top.c index 3040a79f298f..37158548b447 100644 --- a/drivers/gpu/drm/sun4i/sun8i_tcon_top.c +++ b/drivers/gpu/drm/sun4i/sun8i_tcon_top.c @@ -168,6 +168,13 @@ 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(0, regs + TCON_TOP_GATE_SRC_REG); + + /* * TCON TOP has two muxes, which select parent clock for each TCON TV * channel clock. Parent could be either TCON TV or TVE clock. For now * we leave this fixed to TCON TV, since TVE driver for R40 is not yet |