From: Xinlei Lee <xinlei.lee@xxxxxxxxxxxx> In the dsi_enable function, mtk_dsi_rxtx_control is to pull up the MIPI signal operation. Before dsi_disable, MIPI should also be pulled down by writing a register instead of disabling dsi. Signed-off-by: Jitao Shi <jitao.shi@xxxxxxxxxxxx> Signed-off-by: Xinlei Lee <xinlei.lee@xxxxxxxxxxxx> --- drivers/gpu/drm/mediatek/mtk_dsi.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index b509d59235e2..1c6a75a46b67 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -676,6 +676,8 @@ static void mtk_dsi_poweroff(struct mtk_dsi *dsi) mtk_dsi_reset_engine(dsi); mtk_dsi_lane0_ulp_mode_enter(dsi); mtk_dsi_clk_ulp_mode_enter(dsi); + /* set the lane number as 0 */ + writel(0, dsi->regs + DSI_TXRX_CTRL); mtk_dsi_disable(dsi); -- 2.18.0
