5.15-stable review patch. If anyone has any objections, please let me know.
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From: Shuijing Li shuijing.li@mediatek.com
[ Upstream commit 812562b8d881ce6d33fed8052b3a10b718430fb5 ]
For "boe,tv105wum-nw0" this special panel, it is stipulated in the panel spec that MIPI needs to keep the LP11 state before the lcm_reset pin is pulled high.
Signed-off-by: Shuijing Li shuijing.li@mediatek.com Signed-off-by: Xinlei Lee xinlei.lee@mediatek.com Reviewed-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com Signed-off-by: Neil Armstrong neil.armstrong@linaro.org Link: https://patchwork.freedesktop.org/patch/msgid/20230515094955.15982-3-shuijin... Stable-dep-of: 6965809e5269 ("drm/panel: auo,b101uan08.3: Fine tune the panel power sequence") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c index db9d0b86d5428..3229e5eabbd21 100644 --- a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c +++ b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c @@ -36,6 +36,7 @@ struct panel_desc { const struct panel_init_cmd *init_cmds; unsigned int lanes; bool discharge_on_disable; + bool lp11_before_reset; };
struct boe_panel { @@ -551,6 +552,10 @@ static int boe_panel_prepare(struct drm_panel *panel)
usleep_range(5000, 10000);
+ if (boe->desc->lp11_before_reset) { + mipi_dsi_dcs_nop(boe->dsi); + usleep_range(1000, 2000); + } gpiod_set_value(boe->enable_gpio, 1); usleep_range(1000, 2000); gpiod_set_value(boe->enable_gpio, 0); @@ -719,6 +724,7 @@ static const struct panel_desc boe_tv105wum_nw0_desc = { .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_LPM, .init_cmds = boe_init_cmd, + .lp11_before_reset = true, };
static int boe_panel_get_modes(struct drm_panel *panel,