drm/panel: simple: add support for Rocktech RK043FN48H panel

Add support for Rocktech RK043FN48H 4.3" (480x272) LCD-TFT panel.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202306020343.jNTWeM0P-lkp@intel.com/
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230607063139.621351-6-dario.binacchi@amarulasolutions.com

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 754c09c..a247a0e 100644 (file)
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -3281,6 +3281,32 @@ static const struct panel_desc qishenglong_gopher2b_lcd = {
        .connector_type = DRM_MODE_CONNECTOR_DPI,
 };
 
+static const struct display_timing rocktech_rk043fn48h_timing = {
+       .pixelclock = { 6000000, 9000000, 12000000 },
+       .hactive = { 480, 480, 480 },
+       .hback_porch = { 8, 43, 43 },
+       .hfront_porch = { 2, 8, 8 },
+       .hsync_len = { 1, 1, 1 },
+       .vactive = { 272, 272, 272 },
+       .vback_porch = { 2, 12, 12 },
+       .vfront_porch = { 1, 4, 4 },
+       .vsync_len = { 1, 10, 10 },
+       .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW |
+                DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
+};
+
+static const struct panel_desc rocktech_rk043fn48h = {
+       .timings = &rocktech_rk043fn48h_timing,
+       .num_timings = 1,
+       .bpc = 8,
+       .size = {
+               .width = 95,
+               .height = 54,
+       },
+       .bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+       .connector_type = DRM_MODE_CONNECTOR_DPI,
+};
+
 static const struct display_timing rocktech_rk070er9427_timing = {
        .pixelclock = { 26400000, 33300000, 46800000 },
        .hactive = { 800, 800, 800 },
@@ -4321,6 +4347,9 @@ static const struct of_device_id platform_of_match[] = {
                .compatible = "qishenglong,gopher2b-lcd",
                .data = &qishenglong_gopher2b_lcd,
        }, {
+               .compatible = "rocktech,rk043fn48h",
+               .data = &rocktech_rk043fn48h,
+       }, {
                .compatible = "rocktech,rk070er9427",
                .data = &rocktech_rk070er9427,
        }, {