From: Dmitry Baryshkov Date: Mon, 23 Mar 2026 01:21:49 +0000 (+0200) Subject: drm/panel: sharp-ls043t1le01: make use of prepare_prev_first X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=c222177d7c7e1b2e0433d9e47ec2da7015345d50;p=thirdparty%2Fkernel%2Flinux.git drm/panel: sharp-ls043t1le01: make use of prepare_prev_first The DSI link must be powered up to let panel driver to talk to the panel during prepare() callback execution. Set the prepare_prev_first flag to guarantee this. Fixes: 9e15123eca79 ("drm/msm/dsi: Stop unconditionally powering up DSI hosts at modeset") Signed-off-by: Dmitry Baryshkov Reviewed-by: Douglas Anderson Signed-off-by: Neil Armstrong Link: https://patch.msgid.link/20260323-panel-fix-v1-1-9f12b09161e8@oss.qualcomm.com --- diff --git a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c index 36abfa2e65e96..dd1eaba23ad3c 100644 --- a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c +++ b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c @@ -201,6 +201,7 @@ static int sharp_nt_panel_add(struct sharp_nt_panel *sharp_nt) drm_panel_init(&sharp_nt->base, &sharp_nt->dsi->dev, &sharp_nt_panel_funcs, DRM_MODE_CONNECTOR_DSI); + sharp_nt->base.prepare_prev_first = true; ret = drm_panel_of_backlight(&sharp_nt->base); if (ret)