On Fri, Mar 4, 2022 at 7:25 PM Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxxxxx> wrote: > > > Le 04/03/2022 à 11:15, xinlei.lee@xxxxxxxxxxxx a écrit : > > From: Xinlei Lee <xinlei.lee@xxxxxxxxxxxx> > > > > In upstream-v5.8, dsi_enable will operate panel_enable, but this > > modification has been moved in v5.9. In order to ensure the timing of > > dsi_power_on/off and the timing of pulling up/down the MIPI signal, > > the modification of v5.9 is synchronized in this series of patches. > > Hello, > > I'm trying to debug an issue on mt8183 kukui krane sku176 device. > The problem is that boe-tv101wum-nl6 panel isn't working. > At boot time I can see these logs: > panel-boe-tv101wum-nl6 14014000.dsi.0: failed to write command 1 > panel-boe-tv101wum-nl6 14014000.dsi.0: failed to init panel: -62 > and a DSI interrupt time out. > > Since I believe the problem is link to DSI/panel enabling sequence > I have try this series but that doesn't solve the issue. > I notice that when going out of deep sleep mode panel is functional. > > May you have any idea to debug/solve this problem ? > Hi Benjamin, I think this might not be related to this series. Which kernel are you using? I tried the krane sku176 with linux-next 5.17-rc6 (519dd6c19986696f59847ff8bf930436ccffd9a1 (tag: next-20220307, linux-next/master) with or without this series, both can get the display on. dsi related message: [ 0.206330] mediatek-drm mediatek-drm.1.auto: Adding component match for /soc/dsi@14014000 [ 4.567577] panel-boe-tv101wum-nl6 14014000.dsi.0: supply pp3300 not found, using dummy regulator [ 4.567732] panel-boe-tv101wum-nl6 14014000.dsi.0: GPIO lookup for consumer enable [ 4.567738] panel-boe-tv101wum-nl6 14014000.dsi.0: using device tree for GPIO lookup [ 4.567757] of_get_named_gpiod_flags: parsed 'enable-gpios' property of node '/soc/dsi@14014000/panel@0[0]' - status (0) [ 4.585884] panel-boe-tv101wum-nl6 14014000.dsi.0: supply pp3300 not found, using dummy regulator [ 4.586037] panel-boe-tv101wum-nl6 14014000.dsi.0: GPIO lookup for consumer enable [ 4.586042] panel-boe-tv101wum-nl6 14014000.dsi.0: using device tree for GPIO lookup [ 4.586059] of_get_named_gpiod_flags: parsed 'enable-gpios' property of node '/soc/dsi@14014000/panel@0[0]' - status (0) [ 4.587430] mediatek-drm mediatek-drm.1.auto: bound 14014000.dsi (ops 0xffffffd369a752b8) Maybe some config is not enabled? > Regards, > Benjamin > > > > > Changes since v1: > > 1. Dsi sequence marked with patch adjustment > > 2. Fixes: mtk_dsi: Use the drm_panel_bridge > > > > Jitao Shi (3): > > drm/mediatek: Adjust the timing of mipi signal from LP00 to LP11 > > drm/mediatek: Separate poweron/poweroff from enable/disable and define > > new funcs > > drm/mediatek: keep dsi as LP00 before dcs cmds transfer > > > > Xinlei Lee (1): > > drm/mediatek: Add pull-down MIPI operation in mtk_dsi_poweroff > > function > > > > drivers/gpu/drm/mediatek/mtk_dsi.c | 73 ++++++++++++++++++++---------- > > 1 file changed, 49 insertions(+), 24 deletions(-) > > > > _______________________________________________ > Linux-mediatek mailing list > Linux-mediatek@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-mediatek
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