[PATCH 3/7] drm/panel: sitronix-st7789v: Specify the expected bus format

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The LCD controller supports RGB444, RGB565 and RGB888. The value that is
written in the COLMOD register indicates using RGB888, so let's clearly
specify the in-use bus format.

Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
---
 drivers/gpu/drm/panel/panel-sitronix-st7789v.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
index e9ca7ebb458a..0abb45bea18d 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
@@ -6,6 +6,7 @@
 #include <linux/delay.h>
 #include <linux/gpio/consumer.h>
 #include <linux/module.h>
+#include <linux/media-bus-format.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
 
@@ -170,6 +171,7 @@ static int st7789v_get_modes(struct drm_panel *panel,
 			     struct drm_connector *connector)
 {
 	struct drm_display_mode *mode;
+	u32 bus_format = MEDIA_BUS_FMT_RGB666_1X18;
 
 	mode = drm_mode_duplicate(connector->dev, &default_mode);
 	if (!mode) {
@@ -186,6 +188,8 @@ static int st7789v_get_modes(struct drm_panel *panel,
 
 	connector->display_info.width_mm = 61;
 	connector->display_info.height_mm = 103;
+	drm_display_info_set_bus_formats(&connector->display_info,
+					 &bus_format, 1);
 
 	return 1;
 }
-- 
2.34.1




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