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-rw-r--r--drivers/gpu/drm/panel/panel-edp.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/panel-edp.c
index 67ab6915d6e4..85edfd3d59f3 100644
--- a/drivers/gpu/drm/panel/panel-edp.c
+++ b/drivers/gpu/drm/panel/panel-edp.c
@@ -1762,7 +1762,24 @@ static const struct of_device_id platform_of_match[] = {
{
/* Must be first */
.compatible = "edp-panel",
- }, {
+ },
+ /*
+ * Do not add panels to the list below unless they cannot be handled by
+ * the generic edp-panel compatible.
+ *
+ * The only two valid reasons are:
+ * - Because of the panel issues (e.g. broken EDID or broken
+ * identification).
+ * - Because the eDP drivers didn't wire up the AUX bus properly.
+ * NOTE that, though this is a marginally valid reason,
+ * some justification needs to be made for why the platform can't
+ * wire up the AUX bus properly.
+ *
+ * In all other cases the platform should use the aux-bus and declare
+ * the panel using the 'edp-panel' compatible as a device on the AUX
+ * bus.
+ */
+ {
.compatible = "auo,b101ean01",
.data = &auo_b101ean01,
}, {