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drm/mediatek: add dphy reset after setting lanes number

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Add dphy reset after setting lanes number to avoid dphy fifo effor.

Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
This commit is contained in:
Jitao Shi 2019-09-19 14:58:06 +08:00 committed by CK Hu
parent 2f501cc0b0
commit 75374fc2c1
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/mediatek/mtk_dsi.c
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@ -39,6 +39,7 @@
#define DSI_CON_CTRL 0x10
#define DSI_RESET BIT(0)
#define DSI_EN BIT(1)
#define DPHY_RESET BIT(2)
#define DSI_MODE_CTRL 0x14
#define MODE (3)
@ -282,6 +283,12 @@ static void mtk_dsi_reset_engine(struct mtk_dsi *dsi)
mtk_dsi_mask(dsi, DSI_CON_CTRL, DSI_RESET, 0);
}
static void mtk_dsi_reset_dphy(struct mtk_dsi *dsi)
{
mtk_dsi_mask(dsi, DSI_CON_CTRL, DPHY_RESET, DPHY_RESET);
mtk_dsi_mask(dsi, DSI_CON_CTRL, DPHY_RESET, 0);
}
static void mtk_dsi_clk_ulp_mode_enter(struct mtk_dsi *dsi)
{
mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_HS_TX_EN, 0);
@ -652,6 +659,8 @@ static int mtk_dsi_poweron(struct mtk_dsi *dsi)
mtk_dsi_phy_timconfig(dsi);
mtk_dsi_rxtx_control(dsi);
usleep_range(30, 100);
mtk_dsi_reset_dphy(dsi);
mtk_dsi_ps_control_vact(dsi);
mtk_dsi_set_vm_cmd(dsi);
mtk_dsi_config_vdo_timing(dsi);