drm: panel: Add Starry KR070PE2T

The KR070PE2T is a 7" panel with a resolution of 800x480.

KR070PE2T is the marking present on the ribbon cable. As this panel is
probably available under different brands, this marking will catch
most devices.

As I can't find a datasheet for this panel, the bus_flags are instead
from trial-and-error. The flags seem to be common for these kind of
panels as well.

Signed-off-by: Pascal Roeleven <dev@pascalroeleven.nl>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200320112205.7100-3-dev@pascalroeleven.nl

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 0ce81b1..44a1f5d 100644 (file)
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -3076,6 +3076,32 @@ static const struct panel_desc shelly_sca07010_bfn_lnn = {
        .bus_format = MEDIA_BUS_FMT_RGB666_1X18,
 };
 
+static const struct drm_display_mode starry_kr070pe2t_mode = {
+       .clock = 33000,
+       .hdisplay = 800,
+       .hsync_start = 800 + 209,
+       .hsync_end = 800 + 209 + 1,
+       .htotal = 800 + 209 + 1 + 45,
+       .vdisplay = 480,
+       .vsync_start = 480 + 22,
+       .vsync_end = 480 + 22 + 1,
+       .vtotal = 480 + 22 + 1 + 22,
+       .vrefresh = 60,
+};
+
+static const struct panel_desc starry_kr070pe2t = {
+       .modes = &starry_kr070pe2t_mode,
+       .num_modes = 1,
+       .bpc = 8,
+       .size = {
+               .width = 152,
+               .height = 86,
+       },
+       .bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+       .bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE,
+       .connector_type = DRM_MODE_CONNECTOR_LVDS,
+};
+
 static const struct drm_display_mode starry_kr122ea0sra_mode = {
        .clock = 147000,
        .hdisplay = 1920,
@@ -3727,6 +3753,9 @@ static const struct of_device_id platform_of_match[] = {
                .compatible = "shelly,sca07010-bfn-lnn",
                .data = &shelly_sca07010_bfn_lnn,
        }, {
+               .compatible = "starry,kr070pe2t",
+               .data = &starry_kr070pe2t,
+       }, {
                .compatible = "starry,kr122ea0sra",
                .data = &starry_kr122ea0sra,
        }, {