linux-kernel - [PATCH] drm/panel: visionox-r66451: Set prepare_prev

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Date: Fri, 2 Feb 2024 13:50:21 -0800
From: Jessica Zhang <quic_jesszhan@...cinc.com>
To: Neil Armstrong <neil.armstrong@...aro.org>,
        Sam Ravnborg
	<sam@...nborg.org>, David Airlie <airlied@...il.com>,
        Daniel Vetter
	<daniel@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>
CC: <quic_abhinavk@...cinc.com>, <dri-devel@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>,
        Jessica Zhang <quic_jesszhan@...cinc.com>
Subject: [PATCH] drm/panel: visionox-r66451: Set prepare_prev_first flag

The DSI host needs to be enabled for the panel to be initialized in
prepare(). Ensure this happens by setting prepare_prev_first.

Signed-off-by: Jessica Zhang <quic_jesszhan@...cinc.com>
---
 drivers/gpu/drm/panel/panel-visionox-r66451.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/panel/panel-visionox-r66451.c b/drivers/gpu/drm/panel/panel-visionox-r66451.c
index fbb73464de332..493f2a6076f8d 100644
--- a/drivers/gpu/drm/panel/panel-visionox-r66451.c
+++ b/drivers/gpu/drm/panel/panel-visionox-r66451.c
@@ -322,6 +322,7 @@ static int visionox_r66451_probe(struct mipi_dsi_device *dsi)
 	dsi->lanes = 4;
 	dsi->format = MIPI_DSI_FMT_RGB888;
 	dsi->mode_flags = MIPI_DSI_MODE_LPM | MIPI_DSI_CLOCK_NON_CONTINUOUS;
+	ctx->panel.prepare_prev_first = true;
 
 	drm_panel_init(&ctx->panel, dev, &visionox_r66451_funcs, DRM_MODE_CONNECTOR_DSI);
 	ctx->panel.backlight = visionox_r66451_create_backlight(dsi);

---
base-commit: 51b70ff55ed88edd19b080a524063446bcc34b62
change-id: 20230717-visionox-r66451-prev-first-67b036160e32

Best regards,
-- 
Jessica Zhang <quic_jesszhan@...cinc.com>