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| author | Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> | 2026-04-13 17:05:31 +0300 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> | 2026-04-18 02:10:37 +0300 |
| commit | dd0d0a487172bbe9626efc59a43d5dfbea64cdd4 (patch) | |
| tree | 59559cf3a31894a37b16ff2cfb592cc193b7cc36 | |
| parent | 1af0feaca130e7fef016184f85f803385de13ba0 (diff) | |
| download | linux-dd0d0a487172bbe9626efc59a43d5dfbea64cdd4.tar.xz | |
drm/panel: himax-hx8394: set prepare_prev_first
Sending DSI commands from the prepare() callback requires DSI link to be
up at that point. For DSI hosts is guaranteed only if the panel driver
sets the .prepare_prev_first flag. Set it to let these panels work with
the DSI hosts which don't power on the link in their .mode_set callback.
Reviewed-by: Linus Walleij <linusw@kernel.org>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patch.msgid.link/20260413-waveshare-dsi-touch-v3-8-3aeb53022c32@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
| -rw-r--r-- | drivers/gpu/drm/panel/panel-himax-hx8394.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/panel-himax-hx8394.c b/drivers/gpu/drm/panel/panel-himax-hx8394.c index c4d3e09a228d..d64f3521eb15 100644 --- a/drivers/gpu/drm/panel/panel-himax-hx8394.c +++ b/drivers/gpu/drm/panel/panel-himax-hx8394.c @@ -792,6 +792,8 @@ static int hx8394_probe(struct mipi_dsi_device *dsi) if (ret) return ret; + ctx->panel.prepare_prev_first = true; + drm_panel_add(&ctx->panel); ret = mipi_dsi_attach(dsi); |