If we want to set the hardware OD to relay mode,
we have to set OD_CFG register rather than
OD_RELAYMODE; otherwise, the system will access
the wrong address.

Fixes: 7216436420414144646f5d8343d061355fd23483 ("drm/mediatek: set mt8173 
dithering function")
Cc: sta...@vger.kernel.org # v4.9+
Signed-off-by: Bibby Hsieh <bibby.hs...@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c 
b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
index df33b3c..aa5f20f 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
@@ -123,7 +123,7 @@ static void mtk_od_config(struct mtk_ddp_comp *comp, 
unsigned int w,
                          unsigned int bpc)
 {
        writel(w << 16 | h, comp->regs + DISP_OD_SIZE);
-       writel(OD_RELAYMODE, comp->regs + OD_RELAYMODE);
+       writel(OD_RELAYMODE, comp->regs + OD_CFG);
        mtk_dither_set(comp, bpc, DISP_OD_CFG);
 }
 
-- 
1.7.9.5

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