drm: panel: boe-bf060y8m-aj0: Enable prepare_prev_first

Enable prepare_prev_first flag for BF060Y8M-AJ0 panel so that the
previous controller should be prepared first before the prepare for
the panel is called.

This makes sure that the previous controller, likely to be a DSI host
controller should be initialized to LP-11 before the panel is powered up.

Suggested-by: Marijn Suijten <marijn.suijten@somainline.org>
Signed-off-by: Dang Huynh <danct12@riseup.net>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240722-bf060y8m-aj0-prepare-prev-v1-1-0e51c0f59d22@riseup.net
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240722-bf060y8m-aj0-prepare-prev-v1-1-0e51c0f59d22@riseup.net

diff --git a/drivers/gpu/drm/panel/panel-boe-bf060y8m-aj0.c b/drivers/gpu/drm/panel/panel-boe-bf060y8m-aj0.c
index e77db8597eb7c17e086ccff86b18f2a8dd4f0f13..7e66db4a88bbed27920107458d01efd9cf4986df 100644 (file)
--- a/drivers/gpu/drm/panel/panel-boe-bf060y8m-aj0.c
+++ b/drivers/gpu/drm/panel/panel-boe-bf060y8m-aj0.c
@@ -377,6 +377,8 @@ static int boe_bf060y8m_aj0_probe(struct mipi_dsi_device *dsi)
        drm_panel_init(&boe->panel, dev, &boe_bf060y8m_aj0_panel_funcs,
                       DRM_MODE_CONNECTOR_DSI);
 
+       boe->panel.prepare_prev_first = true;
+
        boe->panel.backlight = boe_bf060y8m_aj0_create_backlight(dsi);
        if (IS_ERR(boe->panel.backlight))
                return dev_err_probe(dev, PTR_ERR(boe->panel.backlight),