Message ID | 20231023-display-support-v1-13-5c860ed5c33b@baylibre.com |
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State | New |
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Series |
Add display support for the MT8365-EVK board
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Commit Message
Alexandre Mergnat
Oct. 23, 2023, 2:40 p.m. UTC
Currently, mtk_dsi_lane_ready (which setup the DSI lane) is triggered
before mtk_dsi_poweron. lanes_ready flag toggle to true during
mtk_dsi_lane_ready function, and the DSI module is set up during
mtk_dsi_poweron.
Later, during panel driver init, mtk_dsi_lane_ready is triggered but does
nothing because lanes are considered ready. Unfortunately, when the panel
driver try to communicate, the DSI returns a timeout.
The solution found here is to put lanes_ready flag to false after the DSI
module setup into mtk_dsi_poweron to init the DSI lanes after the power /
setup of the DSI module.
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
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 d8bfc2cce54d..81cf0ddcc399 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -668,6 +668,8 @@ static int mtk_dsi_poweron(struct mtk_dsi *dsi) mtk_dsi_config_vdo_timing(dsi); mtk_dsi_set_interrupt_enable(dsi); + dsi->lanes_ready = false; + return 0; err_disable_engine_clk: clk_disable_unprepare(dsi->engine_clk);